|Written by Nikos Vaggalis|
|Monday, 11 January 2016|
That is also the reason that all major browsers have started deprecating all third party plugins as "old plugins increase your risk for attack by malware, viruses, and other security threats",the most infamous cases being that of Adobe Flash and Java plugins, as Google and Mozilla pull the plug on Adobe Flash details
Drive by downloads need to download a binary file to the user's machine either through tricking the user into download it or without user intervention. This typically happens by merely visiting a 'bad' link (therefore the 'drive by' characteristic), or being redirected from a legitimate website to a malicious one by exploiting vulnerabilities, most often those of cross-site scripting (XSS), hidden in the code of the legitimate site.
XSS bugs are very difficult to identify and need either elaborate manual code revisioning or an automated solution like the Burp Suite capable of probing for exploits. For more information check our recent article Tactical Pentesting With Burp Suite.
The virus in question, named Ransom32, is spread using the same method and adds to an already large collection of ransomware at large such as the FBI ransomware.
What makes this one different?
The virus is clearly a product of the organized crime as it can be obtained through the dark web by paying a fee in bitcoins. After access has been granted the aspiring criminal meets a dashboard that enables him to perform various actions such as declaring the Bitcoin account where the victims' bitcoins will be collected, configuring the messages the victim will be confronted with and more
Bitcoin's property of anonymity is once more exploited for sinister purposes,such as happening in the recent Coordinated Cyber Attack on Greek Banks
The malware itself is packaged into a Winrar self extracting archive that installs without the user's intervention. After getting unpacked and installed,it communicates with a control server through a Tor encrypted tunnel, and retrieves keys that will be used for encrypting many and various user files with formidable AES 128bit encryption.
After the encryption is done a scary looking message is presented to the user demanding that ransom be paid within a 2-3 days interval to a Bitcoin account of the perpetrators liking, else witness all files getting destroyed!
The current form of the malware applies to Windows only but Emisoft, the researchers that identified the risk, say that it's a matter of time that it gets repackaged for use in an other operating system like Linux, as NW.js nature allows an application be written once and be deployed to many.
So what can you do,how can you mitigate the risk?
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|Last Updated ( Wednesday, 13 January 2016 )|