General

  • Target

    https://github.com/Da2dalus/The-MALWARE-Repo/blob/master/Ransomware/CoronaVirus.exe

  • Sample

    240522-z12jwsgh2w

Malware Config

Targets

    • Target

      https://github.com/Da2dalus/The-MALWARE-Repo/blob/master/Ransomware/CoronaVirus.exe

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

    • Modifies WinLogon for persistence

    • ReZer0 packer

      Detects ReZer0, a packer with multiple versions used in various campaigns.

    • Downloads MZ/PE file

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

2
T1112

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Discovery

Query Registry

4
T1012

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Command and Control

Web Service

1
T1102

Tasks