• Category Archives Virus Threats
  • New emerging viruses and spyware loose in the net and identification of diffrent type of malware

  • Keylogger Optimized with AutoIT Infected Thousands of Computers

    A new surge of malware has been discovered which goes on to infect hundreds of thousands of computers worldwide and allegedly steals users’ social and banking site credentials.

     

    Few days back, a list of 5 million combinations of Gmail addresses and passwords were leaked online. The search engine giant, Google said that Gmail credentials didn’t come from the security breaches of its system, rather the credentials had been stolen by phishing campaigns and unauthorized access to user accounts.

     

    Just now, we come across another similar incident where cyber criminals are using a malware which has already compromised thousands of Windows users worldwide in an effort to steal their Social Media account, Online account and Banking account Credentials.

     

    A Greek Security Researcher recently discovered a malware sample via a spam campaign (caught in a corporate honeypot), targeting large number of computers users rapidly. He investigated and posted a detailed technical analyses of the malware on his blog.

     

    After reverse engineer the malware sample file, he found that the cybercriminals are using a combination of software AutoIT (Automate day-to-day tasks on computers) and a “commercial” Keylogger named “Limitless Keylogger” to make it FUD i.e. Fully Undetectable from static analysis.

     

    Keylogger is a critical type of software program for cyber criminals, which records every input typed into the keyboard and easily detects passwords for users’ Email accounts, Social Media accounts and Online Bank accounts.

     

    This malicious application captures every keystrokes users press and send them to a specified email address linked to the cyber criminal. More interestingly, the malware uses AutoIT in order to evade detection by Antivirus programs.

     

    Limitless Keylogger Optimized with AutoIT Infected thousands of Computers

     

    The malware distributed in the spam campaign comes as a WinRAR SFX executable file with a custom icon which drops 4 malicious files onto the victim’s computers with hidden and system attributes.

     

    The Malware archive includes:

     

    • AutoIT script ‘update.exe’ of 331MB
    • Python script to “deobfuscate” AutoIT script
    • oziryzkvvcpm.AWX – Settings for AutoIT script
    • sgym.VQA – Another Encrypted malware/Payload Binary
    Initially the obfuscated AutoIT Script is of size 331MB, because it contains lots of garbage content, but after deobfuscate process it becomes only 55kbyte in size with clean malicious code.

     

    Researcher found lot of functions and various functionalities in the malware code those allow the malicious software to protect itself from detection.

     

    On Further reserve engineering, he found that the malware sends the collected keystroke data to the cybercriminal via SMTP email server. So he sniffed the whole conversation of malware SMTP traffic and discovered that the keylogger was sending all keystrokes of the user, screenshots, recovery data (saved passwords from several applications/browsers) to an email ID – “ontherun4sales@yandex.ru”.

     

    He also extracted the hardcoded SMTP email ID username and passwords of the respective Yandex mail address from the malware source code.
    Limitless Keylogger Optimized with AutoIT Infected thousands of Computers
    Researcher told SecNews, “The detection was accomplished in the past few days and found that the malware was being Greek is targeting users (minimum numerical cases).
    Possibly some Indonesian hackers might have used the malicious software available on the Russian hacking forum sites” they said. “and the targets are well known companies from retail industry,oil,airlines etc
    At last, the researcher also disclosed some online FTP servers using Google hacks, where the data has been uploaded by the different variants of the Limitless Logger by various hacking groups.

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  • New file-encrypting ransomware called CryptoGraphic Locker

    A new file-encrypting ransomware was discovered today by BartBlaze called CryptoGraphic Locker. Just like other encrypting ransomware, this infection will scan your your data files and encrypt them so that they are unusable. The infection will then display a ransom note that requires you to purchase the decryption key in order to decrypt your files. The initial cost to purchase the key is .2 BTC, or approximately $100 USD, which makes this one of the cheaper ransoms that we have seen in a long time. Though the ransom starts out small, there is a 24 hour timer built into the application that will increase the ransom amount each time it hits 0.

    Computer Virus Removal in Fort Lauderdale
    Cryptographic Locker

    When you are infected with CryptoGraphic Locker, the application will configure itself to start when you login to Windows. It will then scan your drives for data files and create new encrypted copies using AES encryption and then delete the old ones. These new files will be renamed to have the extension .clf. A list of all encrypted files will be stored in the %Temp%\CryptoLockerFileList.txt file. The data files that CryptoGraphic Locker targets are:

    .odt,.ods,.odp,.odm,.odc,.odb,.doc,.docx,.docm,.wps,.xls,.xlsx,.xlsm,.xlsb,.xlk,.ppt,.pptx,.pptm,.mdb,.accdb,.pst,.dwg,.dxf,.dxg,.wpd,.rtf,.wb2,.mdf,.dbf,.psd,.pdd,.pdf,.eps,.ai,.indd,.cdr,.dng,.3fr,.arw,.srf,.sr2,.mp3,.bay,.crw,.cr2,.dcr,.kdc,.erf,.mef,.mrw,.nef,.nrw,.orf,.raf,.raw,.rwl,.rw2,.r3d,.ptx,.pef,.srw,.x3f,.lnk,.der,.cer,.crt,.pem,.pfx,.p12,.p7b,.p7c,.jpg,.png,.jfif,.jpeg,.gif,.bmp,.exif,.txt

    When the infection has finished encrypting your data it will display a ransom screen that explains how you can pay the ransom and decrypt your files. Unlike other file-encrypting ransomware that have been released lately, instead of using a decryption site, the malware application itself allows you to make payments, receive your decryption keys, enter your key to decrypt files, etc. While the infection is running it will also terminate the following applications if they are started or are running: Process Hacker, MalwareBytes, Spyhunter, Msconfig, Task Manager, Registry Editor, System Restore, or Process Explorer.

    Last, but not least, the infection will also change your Windows desktop background to the background below. Suprisingly, it uses the CryptoLocker name in the wallpaper instead of the CryptoGraphic Locker name that it uses in the application window.

    wallpaper.jpg

    At this time the Command & Control servers are down, so there is no way to pay the ransom. There is, though, some good news for those who are infected. This ransomware does not delete files using a secure deletion method and does not wipe your system restore points. Therefore you can use a file recovery tool to undelete your files or a program like Shadow Explorer to restore your files from Shadow Volume Copies. Information on how to restore your files from Shadow Volume Copies can be found in the CryptoLocker guide.

    Thanks to BartBlaze, Decrypterfixer, and Cody Johnston for providing info on this malware.

    File additions and registry changes are:

    %Temp%\CryptoLockerFileList.txt
    %Temp%\wallpaper.jpg
    <Path to Dropper>\<random.exe
    
    HKCU\Control Panel\Desktop\Wallpaper	"C:\Users\User\AppData\Local\Temp\wallpaper.jpg"(old value="")
    HKCU\Control Panel\Desktop\WallpaperStyle	"1"(old value="10")
    HKCU\Software\Microsoft\Windows\CurrentVersion\Run\CLock
    
    

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  • Rise in Anti-Child Porn Spam Protection Ransomware infections

    This ransomware pretends to be from a legitimate government organization that states that the infected computer is sending out SPAM that contains links to child pornography sites. The ransom program then states that in order protect yourself, and others, it has encrypted your data using Advanced Encryption Standards, or AES, encryption. Just like the Malware Protection and the ACCDFISA Protection Program variants, these files are not actually encrypted but are password protected RAR files.

    sl.png

    ScreenLocker window for ACCDFISA v2.0, There are actually a few different versions of this. ACCDFISA v2.0 HTML file, These can be worded slightly different, and can have different emails to message the virus creator.

    There seems to be either a leak of the ACCDFISA v2.0 source, or the creator is mixing up the layout of Ransom Note, Screen Locker, and even the internal code. So far I have found 3 different version of ACCDFISA v2.0 with different contact emails, Ransom Notes, Code, and what is worse is even the method of delivery. The previous ACCDFISA v2.0 mostly only affected servers with RDP enabled with weak security. But the last 2 victims I have been messaging had neither a server or RDP enabled, and claimed to have gotten it either by email or a malicious or hacked site. This makes this older modified infection another top placer for worst encrypting infections because the key is unrecoverable, Restore Points are wiped, the computer is locked down, services are mangled, free space and deleted files are wiped with SDelete, and of course files are encrypted with WinRar SFX AES exe’s.

    For informational purposes, the 2 virus creator emails I have found with these variants are brhelpinfo@gmail.com and Dextreme88@gmail.com.

    When first run, this program will scan your computer for data files and convert them to password protected RAR .exe files. These password protected data files will be named in a format similar to test.txt(!! to decrypt email id <id> to <Email>@gmail.com !!).exe. It will then use Sysinternal’s SDelete to delete the original files in such a way that they cannot be undeleted using file recovery tools. It will also set a Windows Registry Run entry to start c:\<Random Number>\svchost.exe when your computer starts. This program is launched immediately when you logon and blocks access to your Windows environment. If you boot your computer using SafeMode, Windows Recovery disk, or another offline recovery CD, you can delete or rename the c:\<Random Number>\svchost.exe file in order to regain access to your Windows Desktop. This “lockout” screen will also prompt you to send the hackers the ransom in order to get a passcode for the system lockout screen and for your password protected files.

    This variant took 3 hours to completely finish on my VM. I was able to access the key file, and decrypt nearly all files and back them up before shutdown. So if you are lucky enough to see this happening, you should immediately backup the key file on the desktop / in the ProgramData folder.

    Sadly, just like the past variants, files cannot be decrypted either without the key, or a backup. If you are reading this infection free I have one question, Have you backed up today?. If not, you better get to it as these types of computer infections are on the rise and definitely here to stay!

    The files that this infection creates when it is installed are:

    File List:

    c:\<Random>\svchost.exe – ScreenLocker / Decrypter

    c:\<Random>\howtodecryptaesfiles.htm – RansomNote that all RansomNotes lnk’s point to

    c:\ProgramData\fdst<Random>\lsassw86s.exe Encrypter / Main dropper

    c:\ProgramData\<Random>\<Random>.dll – Different Numbers and Hashes used by the infection / Also where Temp Key is kept, But removed after completion

    c:\ProgramData\<Random>\<Random>.DLLS List of files to be infected by WinRar

    c:\ProgramData\<Random>\svchost.exe – WinRar CUI renamed

    c:\ProgramData\<Random>\svchost.exe – Sdelete Renamed

    c:\ProgramData\svcfnmainstvestvs\stppthmainfv.dll List of Numbers used by the infection

    c:\ProgramData\svtstcrs\stppthmainfv.dll List of Numbers used by the infection

    c:\Windows\System32\backgrounds2.bmp Renamed ScreenLocker / Decrypter, Used to replace the one in ProgramData if deleted

    c:\Windows\System32\lsassw86s.exe Renamed Encrypter / Main dropper, Used to replace the one in ProgramData if deleted

    c:\Windows\System32\scsvserv.exe Used to complete mangle / disable services to further lock down computer

    c:\Windows\System32\lsassvrtdbks.exe Assists with encryption

    c:\Windows\System32\session455.txt Temp Storage used with .BAT file to logoff user account

    c:\Windows\System32\decryptaesfiles.html Used to copy to ProgramData

    c:\Windows\System32\Sdelete.dll Used to copy Sdelete to ProgramData

    c:\Windows\System32\kblockdll.dll Used to Lock desktop

    c:\Windows\System32\btlogoffusrsmtv.bat Used to log user off

    c:\Windows\System32\default2.sfx Used with winrar to encrypt files

    c:\Windows\System32\cfwin32.dll WinRar CUI renamed

    %Desktop%\<Random>.Txt – Also contains Decrypt Key, But removed after completion

    Registry List:

    HKLM\Software\Microsoft\Windows\CurrentVersion\Run C:\<Random>\svchost.exe – Launches ScreenLocker

    HKCU\Software\Microsoft\Windows\CurrentVersion\Run C:\<Random>\svchost.exe – Launches ScreenLocker

    HKLM\Software\Microsoft\Windows\CurrentVersion\Run C:\ProgramData\<Random>\svchost.exe – Launches ScreenLocker

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  • SandroRAT Mobile Phone Android Malware that Disguises as Kaspersky Mobile Security

    Researchers have warned users of Android devices to avoid app downloads from particularly unauthorized sources, since a new and sophisticated piece of malware is targeting Android users through phishing emails.
    The malware, dubbed SandroRAT, is currently being used by cybercriminals to target Android users in Poland via a widely spread email spam campaign that delivers a new variant of an Android remote access tool (RAT).
    The emails masquerade itself as a bank alert that warns users of the malware infection in their mobile device and offers a fake mobile security solution in order to get rid of the malware infection.
    The mobile security solution poses as a Kaspersky Mobile Security, but in real, it is a version of SandroRAT, a remote access tool devised for Android devices, whose source code has been put on sale on underground Hack Forums since December last year.
    A mobile malware researcher at McAfee, Carlos Castillo, detailed the new variant of Android remote access trojan over the weekend. According to the researcher, the package spread via phishing campaign is capable of executing several malicious commands on the infected devices.
    SandroRAT gives the attacker an unrestricted access to sensitive details such as SMS messages, contact lists, call logs, browser history (including banking credentials), and GPS location data stored in Android devices and store all the data in an “adaptive multi-rate file on the SD card” to later upload them to a remote command and control (C&C) server.

    Spam campaigns (via SMS or email) are becoming a very popular way to distribute Android malware, which can steal personal information or even obtain complete control of a device with a tools like SandroRat,” wrote Carlos Castillo. “This attack gains credence with the appearance of a bank offering security solutions against banking malware, a typical behavior of legitimate banks.”

    This new version of SandroRAT also has a self-update feature in it and it can install additional malware through user prompts for such actions. The malware gives the attacker full control over the messages, who can intercept, block and steal incoming messages, as well as insert and delete them.
    It also appears that the attacker can send multimedia messages with specific parameters sent by the C&C server and can also record nearby sounds using the device’s mic.
    Castillo also notes that the SandroRAT variant of malware had decryption capabilities for older releases of Whatsapp messaging app. But, the users running the latest version of Whatsapp in their Android devices are not vulnerable because the developers adopted a stronger encryption scheme.

    This decryption routine will not work with WhatsApp chats encrypted by the latest version of the application because the encryption scheme (crypt7) has been updated to make it stronger (using a unique server salt),” Castillo explained. “WhatsApp users should update the app to the latest version,” he advised.

    Users are advised to avoid application downloads from unauthorized sources, particularly when the app download link is send through an email. Good practice is to always prefer downloading apps from the Google Play Store or other trusted sources.

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  • NEW MALWARE – New Banking trojanwith Network Sniffer Spreading on the Internet at a high pace

    The hike in the banking malware this year is no doubt almost double compared to the previous one, and so in the techniques of malware authors.

    Until now, we have seen banking Trojans affecting the infected device and steal users’ financial credentials in order to run them out of their money. But nowadays, malware authors are adopting more sophisticated techniques in an effort to target as many victims as they can.

    BANKING MALWARE WITH NETWORK SNIFFING

    Security researchers from the Anti-virus firm Trend Micro have discovered a new variant of banking malware that not only steal the users’ information from the device it has infected but, has ability to “sniff” network activity to steal sensitive information of other network users as well.

     

    The banking malware, dubbed as EMOTET spreads rapidly through spammed emails that masquerade itself as a bank transfers and shipping invoices. The spammed email comes along with a link that users easily click, considering that the emails refer to financial transactions.

    Once clicked, the malware get installed into users’ system that further downloads its component files, including a configuration and .DLL file. The configuration files contains information about the banks targeted by the malware, whereas the .DLL file is responsible for intercepting and logging outgoing network traffic.

    The .DLL file is injected to all processes of the system, including web browser and then “this malicious DLL compares the accessed site with the strings contained in the previously downloaded configuration file, wrote Joie Salvio, security researcher at Trend Micro.

    If strings match, the malware assembles the information by getting the URL accessed and the data sent.

    ENCRYPTED STOLEN DATA

    Meanwhile, the malware stores stolen data in the separate entries after been encrypted, which means the malware can steal and save any information the attacker wants.

    The decision to storing files and data in registry entries could be seen as a method of evasion“, Salvio said. “Regular users often do not check registry entries for possibly malicious or suspicious activity, compared to checking for new or unusual files. It can also serve as a countermeasure against file-based AV detection for that same reason.”

    HTTPS CONNECTIONS KICKED

    Moreover, the malware also has capability to even bypass the secure HTTPs connection which poses more danger to users’ personal information and banking credentials, as users will feel free to continue their online banking without even realizing that their information is being stolen.

    [It has] capability to hook to the following Network APIs to monitor network traffic: PR_OpenTcpSocket PR_Write PR_Close PR_GetNameForIndentity Closesocket Connect Send WsaSend

    This kind of financial threat is really dangerous for the people, because previous banking malwares often rely on form field insertion or phishing pages to steal users’ financial information, but the use of network sniffing in the malware, makes the threat even more harder for users to detect any suspicious activity as no changes are visibly seen, said the researcher.

    Researchers are still investigating that how the gathered stolen data the malware sniffs from the network is being sent to the attacker.

    The malware infection is not targeted to any specific region or country but, EMOTET malware family is largely infecting the users of EMEA region, i.e. Europe, the Middle East and Africa, with Germany on the top of the affected countries.

    Users are advised to do not open or click on links and attachments provided in any suspicious email, but if the message is from your banking institution and of concern to you, then confirm it twice before proceeding.

    The hike in the banking malware this year is no doubt almost double compared to the previous one, and so in the techniques of malware authors.

    Until now, we have seen banking Trojans affecting the infected device and steal users’ financial credentials in order to run them out of their money. But nowadays, malware authors are adopting more sophisticated techniques in an effort to target as many victims as they can.

    BANKING MALWARE WITH NETWORK SNIFFING

    Security researchers from the Anti-virus firm Trend Micro have discovered a new variant of banking malware that not only steal the users’ information from the device it has infected but, has ability to “sniff” network activity to steal sensitive information of other network users as well.

    The banking malware, dubbed as EMOTET spreads rapidly through spammed emails that masquerade itself as a bank transfers and shipping invoices. The spammed email comes along with a link that users easily click, considering that the emails refer to financial transactions.

    Once clicked, the malware gets installed into users’ system that further downloads its component files, including a configuration and .DLL file. The configuration files contains information about the banks targeted by the malware, whereas the .DLL file is responsible for intercepting and logging outgoing network traffic.

    The .DLL file is injected to all processes of the system, including web browser and then “this malicious DLL compares the accessed site with the strings contained in the previously downloaded configuration file, wrote Joie Salvio, security researcher at Trend Micro. “If strings match, the malware assembles the information by getting the URL accessed and the data sent.

     

    ENCRYPTED STOLEN DATA

    Meanwhile, the malware stores stolen data in the separate entries after been encrypted, which means the malware can steal and save any information the attacker wants.

    The decision to storing files and data in registry entries could be seen as a method of evasion“, Salvio said. “Regular users often do not check registry entries for possibly malicious or suspicious activity, compared to checking for new or unusual files. It can also serve as a countermeasure against file-based AV detection for that same reason.”

    HTTPS CONNECTIONS KICKED

    Moreover, the malware also has capability to even bypass the secure HTTPs connection which poses more danger to users’ personal information and banking credentials, as users will feel free to continue their online banking without even realizing that their information is being stolen.

    [It has] capability to hook to the following Network APIs to monitor network traffic: PR_OpenTcpSocket PR_Write PR_Close PR_GetNameForIndentity Closesocket Connect Send WsaSend

    This kind of financial threat is really dangerous for the people, because previous banking malwares often rely on form field insertion or phishing pages to steal users’ financial information, but the use of network sniffing in the malware, makes the threat even more harder for users to detect any suspicious activity as no changes are visibly seen, said the researcher.

    Researchers are still investigating that how the gathered stolen data the malware sniffs from the network is being sent to the attacker.

    MALWARE DISTRIBUTION OVER WORLD MAP

    The malware infection is not targeted to any specific region or country but, EMOTET malware family is largely infecting the users of EMEA region, i.e. Europe, the Middle East and Africa, with Germany on the top of the affected countries.

    Users are advised to do not open or click on links and attachments provided in any suspicious email, but if the message is from your banking institution and of concern to you, then confirm it twice before proceeding.

     

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  • Certain DevianArt advertising Campaigns lead to Malware, Spyware and Unwanted Applications on your computer

     

    DeviantArt Malwaretising

     

    Today, the estimated number of known computer threats like viruses, worms, backdoors, exploits, Trojans, spyware, password stealer, and other variants of potentially unwanted software range into millions. It has the capability to create several different forms of itself dynamically in order to thwart antimalware programs.

    Users of the biggest online artwork community, DevianART with Global Alexa Rank 148, are targeted by the potentially unwanted software programs — delivered by the advertisements on the website, Stop Malvertising reported on Sunday.

    A Potentially Unwanted Application (PUA) is a program that may not be intentionally malicious, but can negatively affect the performance and reliability of the system by distributing spyware or adware that can cause undesirable behavior on the computer. Some may simply display annoying advertisements, while others may run background processes that cause your computer to slow down. However, unlike malware, users themselves consent to install a PUA into their systems.

    The malicious advertisements are delivered via newly registered (3rd March 2014) domains – Redux Media (www.reduxmedia.com) and avadslite.com. “Over the past months, this domain has been seen to resolve to the following IP addresses: 107.20.210.36 (2014-05-01), 54.243.89.71 (2014-05-01) and 184.170.128.86 (2014-05-25). According to VirusTotal, malware has communicated with the last two IP addresses.” Kimberly from Stop Malvertising said.

    Once the user click on the Ad served by the DevianArt website, they are redirected to the Optimum Installer, a source of Potentially Unwanted Applications (PUA’s) that downloads legitimate software applications as well as bundled third-party software including toolbar.

     

    malware ad

    As shown, a pop-under warning will urge users to “update Media Player“, immediately followed by a second advertisement to “update Windows 7 Drivers” to avoid vulnerabilities, reduce crashes and ensure an optimal browsing experience. This is just a scam nothing more or less.

    Obviously, these are well known social engineering techniques to trick the computer user into installing malicious or ad-support software. Such infection are designed specifically to make money, generate web traffic, and will display advertisements and sponsored links within your web browser.

     

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  • Zeus Trojan (or Zbot Trojan) steals confidential information from the infected computer.

    Pandemiya hacking trojan

    A new and relatively rare Zeus Trojan program was found which is totally different from other banking Trojans and has capability to secretly steal data from forms, login credentials and files from the victim as well as can create fake web pages and take screenshots of victim’s computer.

    Researchers at RSA Security’s FraudAction team have discovered this new and critical threat, dubbed as ‘Pandemiya’, which is being offered to the cyber criminals in underground forums as an alternative to the infamous Zeus Trojan and its many variants, that is widely used by most of the cyber-criminals for years to steal banking information from consumers and companies.

     

    The source code of the Zeus banking Trojan is available on the underground forums from past few years, which lead malware developers to design more sophisticated variants of Zeus Trojan such as Citadel, Ice IX and Gameover Zeus.

     

    But, Pandemiya is something by far the most isolated and dangerous piece of malware as the author spent a year in writing the code for Pandemiya, which includes 25,000 lines of original code written in C.
    Like other commercial Trojan, Pandemiya infect the machines through exploit kits and via drive-by download attacks to boost infection rate that exploit flaws in the vulnerable software such as Java, Silverlight and Flash within few seconds victim lands on the web page.

    Pandemiya’s coding quality is quite interesting, and contrary to recent trends in malware development, it is not based on Zeus source code at all, unlike Citadel/Ice IX, etc.,” researchers from RSA, the security division of EMC, said Tuesday in a blog post. “Through our research, we found out that the author of Pandemiya spent close to a year of coding the application, and that it consists of more than 25,000 lines of original code in C.

    Pandemiya Trojan using Windows CreateProcess API to inject itself into every new process that is initiated, including Explorer.exe and re-injects itself when needed. Pandemiya is being sold for as much as $2,000 USD and provides all the nasty features including encrypted communication with command and control servers in an effort to evade detection.The Trojan has been designed with modular architecture to load more external plug-ins, which allows hackers to add extra features simply by writing new DLL (dynamic link library). The extra plug-ins easily add capabilities to the Trojan’s core functionality, that’s why the developer charge an extra of $500 USD to get the core application as well as its plugins, which allows cybercriminals to open reverse proxies on infected computers, to steal FTP credentials and to infect executable files in order to inject the malware at start up.

     

    The advent of a freshly coded new trojan malware application is not too common in the underground,” Marcus writes, adding that the modular approach in Pandemiya could make it “more pervasive in the near future.

    The malware developers are also working on other new features to add reverse Remote Desktop Protocol connections and a Facebook attack module in order to spread the Trojan through hijacked Facebook accounts.

    HOW TO REMOVE PANDEMIYA TROJAN

    The Trojan can be easily removed with a little modification in the registry and command line action, as explained below:

      1. Locate the registry key HKEY_LOCAL_USER\Software\Microsoft\Windows\CurrentVersion\Run and identify the *.EXE filename in your user’s ‘Application Data’ folder. Note the name, and delete the registry value.
      2. Locate the registry key HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\AppCertDlls. Find the value with the same name as the *.EXE file in the previous step. Note the file name, and remove the value from the registry.
      3. Reboot the system. At this stage Pandemiya is installed but no longer running. Delete both files noted earlier. This will remove the last traces of the Trojan. Your system is now clean.

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  • Cryptowall Ransomware Spreading on the internet rapidly through advertisements

    Cryptowall Lock Malware spyware spreading
    Cryptowall Lock Malware

     

    Ransomware is an emerging threat in the evolution of cybercriminals techniques to part you from your money. Typically, the malicious software either lock victim’s computer system or encrypt the documents and files on it, in order to extort money from the victims.

    Though earlier we saw the samples of Ransomware tended to be simple with dogged determinations to extort money from victims. But with the exponential rise in the samples of Ransomware malwares, the recent ones are more subtle in design, including Cryptolocker, Icepole, PrisonLocker, CryptoDefense and its variants.

    Now, the ransomware dubbed as Cryptowall, a latest variant of the infamous ransomware Cryptolocker is targeting users by forcing them to download the malicious software by through advertising on the high profile domains belonging to Disney, Facebook, The Guardian newspaper and others.

    Cryptolocker is designed by the same malware developer who created the sophisticated CryptoDefense (Trojan.Cryptodefense) ransomware, appeared in the end of March, that holds the victims’ computer files hostage by wrapping them with strong RSA 2048 encryption until the victim pays a ransom fee to get them decrypted.

    But unfortunately, the malware author failed to realize that he left the decryption keys left concealed on the user’s computer in a file folder with application data.

    So, to overcome this, the developer created Cryptowall ransomware and alike the latest versions of CryptoDefense, the infected system’s files and documents encrypted by CryptoWall are impossible to decrypt.

    The story broke, when researchers at Cisco revealed that cybercriminals have started targeting people with RIG Exploit Kits (EK) to distribute malicious Cryptowall ransomware malware.

    The Rig Exploit Kit was first spotted by Kahu Security in April, which checks for an unpatched version of Flash, Internet Explorer, Java or the Silverlight multimedia program on the infected users and if found, the system is instantly exploited by the bad actors.

    Researchers at Cisco have noticed high levels of traffic consistent with the new “RIG” exploit kit, thereby blocking requests to over 90 domains. On further investigation, the company observed that many of its Cloud Web Security (CWS) users were visiting on those malicious domains after clicking advertisements on high-profile domains such as “apps.facebook.com,” “awkwardfamilyphotos.com,” “theguardian.co.uk” and “go.com,” and many others.

    cryptowall ransomware If clicked, the advertisements redirect victims to one of those malicious domains in order to malvertise users and once the system get infected with the RIG Exploit Kit, it will deliver the payload which includes the Cryptowall Ransomware malware.

    Now, when this CryptoWall is installed in the infected system, it will start scanning the system Hard Drive for data files and encrypt them.

    After encrypting the files on victim’s system, it will create files containing ransom instructions in every folder it had encrypted, demanding up to $500 USD. The service where users are instructed to pay the ransom amount is a hidden service that uses the Command-and-Control server hosted on TOR .onion domain.

    The largest share of infections, some 42 percent, are in the United States, followed by England and Australia, but it believes that several groups and bad actors are involved in this attack chain.

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    Cryptowall Lock Malware
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  • First Android Phone Ransomware that Encrypts your SD card Files

    We have seen cybercriminals targeting PCs with Ransomware malware that encrypts your files or lock down your computer and ask for a ransom amount to be paid in a specified duration of time to unlock it.
    To deliver the Ransomware malwares to the mobile devices, cyber criminals have already started creating malicious software programs for android devices. Last month, we reported about a new Police Ransomware malware that locks up the devices until the victims pay a ransom to get the keys to unlock the phone. But, the malware just lock the mobile screen and a loophole in the its implementation allowed users to recover their device and data stored on SDcard.

    Now, in an effort to overcome this, threat actors have adopted encryption in the development of mobile Ransomware malwares. Recently, the security firm ESET has discovered a new Android ransomware, dubbed as Android/Simplocker.A, that has ability to encrypt the files on the device SD card and then demand a ransom from the victim in order to decrypt those files.

    Once installed, the malware scans the SD card for certain file types such as image, document or video with extensions – jpeg, jpg, png, bmp, gif, pdf, doc, docx, txt, avi, mkv, 3gp, mp4 and encrypts them using AES in a separate thread in the background. After encrypting the files, the malware displays the following ransom message, written in Russian, which clearly means that this threat is targeting Russian Android users.

    WARNING your phone is locked!
    The device is locked for viewing and distributing child pornography , zoophilia and other perversions.
    To unlock you need to pay 260 UAH.
    1.) Locate the nearest payment kiosk.
    2.) Select MoneXy
    3.) Enter {REDACTED}.
    4.) Make deposit of 260 Hryvnia, and then press pay. Do not forget to take a receipt!
    After payment your device will be unlocked within 24 hours. In case of no PAYMENT YOU WILL LOSE ALL DATA ON your device!

    The Ransomware malware directs victim to pay the ransom amount i.e. 260 UAH, which is roughly equal to $21 US, through the MoneXy service, as this payment service is not easily traceable as the regular credit card.

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    To maintain anonymity the malware author is using the Command-and-Control server hosted on TOR .onion domain and the malware sends the information of the infected device such as IMEI number to its server. The researchers at ESET are still analysing the malware:

    Our analysis of the Android/Simplock.A sample revealed that we are most likely dealing with a proof-of-concept or a work in progress – for example, the implementation of the encryption doesn’t come close to “the infamous Cryptolocker” on Windows.

    The researchers have found that the malware is capable to encrypt the victim’s files, which could be lost if the decryption key is not retrieved from the malware author by paying the ransom amount, but on the other hand the researchers strongly advise users against paying fine, as their is no guarantee that the hacker will provide you decryption keys even after paying the amount.
    Unfortunately, mobile antivirus products are only capable to detect such known/detected threats only and can’t detect similar the new threats. So, it is important for you to always keep the back-up of all your files either manually on the computer system or use cloud backup services like dropbox, google drive etc, in order to protect it from the emerging threats.

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  • New Malware goes viral spreading through Facebook Messages

    Facebook Malware threat

    In yet another method for cyber criminals to utilize the world’s most popular social networks for their own nefarious purposes, it appears a trojan is circulating through Facebook, stealing accounts and (probably) taking creds.

    Thanks to the vigilant mind of Malwarebytes User, Showbizz, we were able to take a look at this new threat and what it could mean for the rest of the net.

    Here is how it works:

    1. User gets a Facebook instant message from a friend of their’s, which includes the words ‘lol’ and a file waiting to be downloaded.
    2. The user downloads the file because they can assume it can be trusted.  The filename matches the usual filename of a photo: ‘IMG_xxxx’.zip.
    3. Once downloaded, the user unzips the file and clicks on what they assume is an image file, still called IMG_xxxx.jar
    4. The JAR file executes, downloads malware and infects the system.
    5. The infected users Facebook account is compromised and then used to send more malware to the users friends.

    Unlike previous versions of this scam, it is almost like the cyber criminals decided to make an amalgam of different infection tactics to obtain the normal goal.

    The first is the use of instant messaging, we have seen plenty of malware use instant messaging in various forms to send malicious files to victims, including Skype, MSN, Yahoo, etc.

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  • AOL hit by massive data breach, Urges users to change their passwords

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    AOL hit by massive data breach

    The personal details of AOL’s millions of customers has been leaked in an attack on the company’s systems, resulting in thousands of accounts being hijacked to send spam.
    Internet pioneer AOL has warned of a major breach that has affected a significant number of users, leaking email and postal addresses, contact information and password details to attackers unknown.

    AOL launched in 1983 as the Control Video Corporation and produced a short-lived modem-based gaming download service for the Atari 2600 dubbed GameLine. The precursor to Valve’s Steam and similar digital distribution systems, GameLine was not a financial success; the company had better luck with the Link series of online portals for the Commodore 64, Apple II and Macintosh, and IBM compatibles. In 1989, America Online was born as a walled-garden internet service which included chat, email and several games – including the first-ever web-based interactive fiction series and the first automated play-by-email game.

    While internet-savvy consumers soon dropped AOL’s walled-garden system for more open services from generic internet service providers, the company still boasts a considerable client base. Despite an ongoing slide in customers, the company boasts a near three-million user count in the US alone – and it’s these customers who have been exposed in a serious security breach.

    ‘We have determined that there was unauthorised access to information regarding a significant number of user accounts,’ the company admitted late last night, following an investigation into spam messages sent from registered AOL accounts. ‘This information included AOL users’ email addresses, postal addresses, address book contact information, encrypted passwords and encrypted answers to security questions that we ask when a user resets his or her password, as well as certain employee information. We believe that spammers have used this contact information to send spoofed emails that appeared to come from roughly two per cent of our email accounts.’

    The company has not confirmed the nature of the ‘encryption’ used to store the passwords – which should, by industry best practice, be a salted one-way hash function, rather than reversible encryption – but does claim that it has ‘no indication’ that said encryption was broken; this despite the attackers gaining full access to the accounts from which spam is issuing, an indication that they have indeed been able to retrieve at least some passwords from the corpus.

    Users affected by the breach – and, at this point, it looks to cover anyone with an AOL email address, active or otherwise – is advised to reset their password and change their security questions; if the same password is used anywhere else, that should be changed too.

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  • New Zero Day Vulnerability Found In Internet Explorer All versions


    A new zero-day vulnerability that resides in all versions of Internet Explorer has been spotted in the wild, Microsoft confirmed late Saturday.

    The vulnerability, which could allow remote code execution, is being used in “limited, targeted attacks,” according to an advisory issued by Microsoft. While all versions of the web browser, IE 6 through 11, are affected by the vulnerability, attacks are currently targeting IE versions 9, 10 and 11, according to security firm FireEye, which first reported the flaw Friday.

    The attack leverages a previously unknown “use after free” vulnerability — data corruption that occurs after memory has been released — and bypasses both Windows DEP (data execution prevention) and ASLR (address space layout randomization) protections, according to FireEye.

    The vulnerability is currently being exploited by a group of hackers targeting financial and defense organization in the US, FireEye told CNET.

    “The APT [advanced persistent threat] group responsible for this exploit has been the first group to have access to a select number of browser-based 0-day exploits (e.g. IE, Firefox, and Flash) in the past,” FireEye said. “They are extremely proficient at lateral movement and are difficult to track, as they typically do not reuse command and control infrastructure.”

    FireEye said the flaw was significant because it affects more than a quarter of the total browser market.

    “Collectively, in 2013, the vulnerable versions of IE accounted for 26.25% of the browser market,” FireEye said in its advisory.

    An attack could be triggered by luring visitors to a specially crafted web page, Microsoft explained.

    “The vulnerability exists in the way that Internet Explorer accesses an object in memory that has been deleted or has not been properly allocated,” Microsoft said. “The vulnerability may corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user within Internet Explorer.”

    Microsoft said it is investigating the vulnerability and may issue an out-of-cycle security update to address the issue.

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