Evolution Ransomware actively spreading in the wild.

December 20, 2018

The SonicWall Capture Labs Threat Research Team observed reports of a new variant family of Evolution Ransomware [Evolution.RSM] actively spreading in the wild.

Evolution encrypts the victims files with a strong encryption algorithm until the victim pays a fee to get them back.

Contents of the Evolution ransomware

Infection Cycle:

The Ransomware adds the following files to the system:

  • Malware.exe
    • %App.path%\ (_H0W_TO_REC0VER_[Random].html
    • %App.path%\ (_H0W_TO_REC0VER_[Random].txt
    • %App.path%\ (_H0W_TO_REC0VER_[Random].lnk
    • %App.path%\ [File Name]. Random
    • %Userprofile\Desktop %\ (_H0W_TO_REC0VER_[Random].html
      • Instruction for recovery

Once the computer is compromised, the Ransomware runs the following commands:

The Ransomware encrypts all the files and appends random extension such as [.hAOrGb]  onto each encrypted file’s filename.

After encrypting all personal documents the Ransomware shows the following webpage containing a message reporting that the computer has been encrypted and to contact its developer for unlock instructions.

SonicWall Capture Labs provides protection against this threat via the following signature:

  • GAV: Evolution.RSM (Trojan)