It was quite a slow week in the beginning with most of the news being for the most part about small ransomware variants. It finished with a bang, though, with the reappearance of Locky riding on a strong wave of SPAM emails. As you can imagine, there were quite a few articles about Locky today.
After last week, its a pleasure to have a slow week in ransomware. Nothing really big released this week other than Emsisoft releasing an updated Cry9 decryptor and the new CryptoMix variant called Mole. Otherwise, this week has been full of a lot of in development ransomware or smaller variants.
The Cerber ransomware family has risen to take Locky's place at the top of the ransomware mountain after new Locky versions stopped coming out last year, and spam operations spreading Locky have slowed down to a trickle in 2017.
For more than a month, at least ten groups of attackers have been compromising systems running applications built with Apache Struts and installing backdoors, DDoS bots, cryptocurrency miners, or ransomware, depending if the machine is running Linux or Windows.
Another week and a lot more crappy ransomware released. Of particular interest is that Cerber no longer encrypts filenames, Emsisoft released a CryptON decryptor, and lots of really good technical writeups about ransomware.
A new version of the Cerber Ransomware was released today that deviates from its normal course of encrypting not only a file, but the filename as well. This version will now keep the file name the same, but only append a random extension to the encrypted files.
Ransom notes from Cerber ransomware infections have been found inside the source code of two Android applications available on the official Google Play Store.
It was a very slow week when it comes to ransomware, which is a great thing. Hopefully it will stay that way.The biggest news this week is the POC ransomware targeting ICS/SCADA that was demonstrated at RSA this week and the live streaming by Fabian Wosar of him reversing and cracking a a new ransomware called Hermes.
A variant of the Cerber ransomware spotted in the wild in the past month contains a function that searches for locally-installed security products and avoids encrypting their files, so firewalls, antivirus or antispyware products can continue working even after Cerber has locked the computer.
The Sage 2.0 Ransomware, which is an updated variant of CryLocker, has been discovered being distributed by one of the same actors who is distributing Locky, Cerber, and Spora. Due to this there is a good chance of wider distribution of this ransomware. This guide provides information on Sage 2.0 and what to expect from it.
This week we continue to see more ransomware being released as well as changes in the distribution of the larger ransomware infections. For example, Locky has had a very low distribution lately since the holidays, but according to the Cisco Talos Group, it is starting to pick up again.
Security researchers have gained access to one of the servers used by the Cerber gang, from where they were able to extract basic statistics about their operation.