- Distribution Method : Unknown
- MD5 : f6fa92b0f1e9e932cf6ee7b6ea1c33a6
- Major Detection Name : Generic.Ransom.Matrix.411CF85C (BitDefender), W32/Matrix.2FFD!tr.ransom (Fortinet)
- Encrypted File Pattern : <Original Filename>.<Original Extension> → [RecoveryData1@cock.li].<Random>-<Random>.CHRB
- Malicious File Creation Location :
- C:\Users\%UserName%\AppData\Roaming\<Random>.bat
- C:\Users\%UserName%\AppData\Roaming\<Random>.vbs
- C:\Windows\System32\Tasks\DSHCA
- Payment Instruction File : !README_CHRB!.rtf
- Major Characteristics :
- Offline Encryption
- Reruns by adding "DSHCA" in Task Scheduler to disable system restore (vssadmin Delete Shadows /All /Quiet, wmic SHADOWCOPY DELETE, bcdedit /set {default} recoveryenabled No, bcdedit /set {default} bootstatuspolicy ignoreallfailures) for every 5 minutes.
- Changes desktop background (C:\Users\%UserName%\AppData\Roaming\<Random>.bmp)
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