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.
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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Computer hacker forums lit up last week as Federal Bureau of Investigation agents and police in 17 countries began knocking on doors, seizing computers and making arrests.
On the popular websites where cyber criminals buy and sell software kits and help each other solve problems, hackers issued warnings about police visits to their homes.
The hackers quickly guessed that a major crackdown was underway on users of the malicious software known as Blackshades.
The FBI and prosecutors in the Manhattan U.S. attorney’s office announced the results of that probe on Monday: More than 90 arrests worldwide.
The malware sells for as little as $40. It can be used to hijack computers remotely and turn on computer webcams, access hard drives and capture keystrokes to steal passwords — without victims ever knowing it.
Related: Beware, your computer may be watching you
Criminals have used Blackshades to commit everything from extortion to bank fraud, the FBI said.
Last week, watching it all play out were about two dozen FBI cybercrime investigators holed up in the New York FBI’s special operations center, high above lower Manhattan.
Rows of computer screens flickered with updates from police in Germany, Denmark, Canada, the Netherlands and elsewhere. Investigators followed along in real time as hundreds of search warrants were executed and suspects were interviewed.
The sweep, capping a two-year operation, is one of the largest global cybercrime crackdowns ever. It was coordinated so suspects didn’t have time to destroy evidence. Among those arrested, in Moldova, was a Swedish hacker who was a co-creator of Blackshades.
“The charges unsealed today should put cyber criminals around the world on notice,” said Leo Taddeo, chief of the FBI’s cybercrime investigations in New York. “If you think you can hide behind your computer screen — think again. ”
Officials say Blackshades was used to illegally access the computers of 700,000 victims around the world, as shown in this FBI heatmap.
700,000 victims around the world: Inside the FBI special operations center, six large computer monitors displayed key parts of the probe. Agents kept an eye on one screen showing a popular website where Blackshades was sold. The site was taken down by the FBI.
Another monitor showed a heatmap of the world displaying the locations of the 700,000 estimated victims, whose computers have been hijacked by criminals using the Blackshades software. Splotches of green on the map indicated concentrations of infected computers in highly populated parts of the U.S., Europe, Asia and Australia.
The FBI said that in just a few years Blackshades has become one of the world’s most popular remote-administration tools, or RATs, used for cybercrime.
Taddeo said the unprecedented coordination with so many police agencies came about because of concern about the fast growth of cybercrime businesses.
“These cyber criminals have paid employees, they have feedback from customers — other cyber criminals — to continually update and improve their product,” Taddeo said recently. While he spoke, agents took calls from counterparts working the case in more than 40 U.S. cities.
Blackshades had grown rapidly because it was marketed as off-the-shelf, easy to use software, much like legitimate consumer tax-preparation software.
“It’s very sophisticated software in that it is not very easy to detect,” Taddeo said. “It can be installed by somebody with very little skills.”
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:
User gets a Facebook instant message from a friend of their’s, which includes the words ‘lol’ and a file waiting to be downloaded.
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.
Once downloaded, the user unzips the file and clicks on what they assume is an image file, still called IMG_xxxx.jar
The JAR file executes, downloads malware and infects the system.
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 seenplenty of malware use instant messaging in various forms to send malicious files to victims, including Skype, MSN, Yahoo, etc.
A few hours ago, Christopher Poole, aka “moot,” the founder of 4chan, revealed that the popular image-based bulletin board was hacked.
The attack took place last week. The hacker leveraged a software vulnerability to gain access to administrative functions and data from a 4chan database. The attacker apparently wanted to expose the posting habits of a specific user he didn’t like.
“After careful review, we believe the intrusion was limited to imageboard moderation panels, our reports queue, and some tables in our backend database,” moot noted.
“Due to the way the intruder extracted information from the database, we have detailed logs of what was accessed. The logs indicate that primarily moderator account names and credentials were targeted.”
The hacker accessed the Pass credentials of three 4chan Pass users. The impacted individuals have been notified and offered refunds and lifetime Passes.
moot highlights the fact that 4chan doesn’t process any payment information, so the attacker couldn’t have gained access to financial data. Payment information is processed by Stripe.
As far as the vulnerability leveraged by the hacker is concerned, it has been patched shortly after 4chan became aware of it. Software and systems are being reviewed to prevent future breaches.
In a 4chan post published last week (removed since), a user revealed that the attacker was an Australian individual who wanted to expose “multiple abuses of power and violations of proper mod stewardship.” The attacker allegedly gained access to the details of over 12,000 sold Passes. He’s said to have had access to 4chan’s systems for a week.
This isn’t the first time 4chan is targeted by hackers. Back in June 2012, hackers of UGNazi redirected the site’s visitors to their Twitter account.
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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Officials say Blackshades was used to illegally access the computers of 700,000 victims around the world, as shown in this FBI heatmap.
