Argus Ransomware actively spreading in the wild.

November 16, 2018

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

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

Contents of the Argus Ransomware.

Infection Cycle:

The Ransomware adds the following files to the system:

  • Malware.exe
    • %Userprofile \audiodg.exe [Executable Dropper ]
    • %App.path%\ [File Name]. ARGUS
    • %Userprofile\Desktop %\ ARGUS-DECRYPT.html
      • Instruction for recovery

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

 

The Ransomware performs process injection techniques into Csrss.exe process to hide its own codes into a legitimate process.

 

The Ransomware encrypts all the files and appends . Argus extension 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: Argus.RSM (Trojan)