General

  • Target

    _-Venom.exe

  • Size

    534KB

  • Sample

    220304-2h8xcsfhc8

  • MD5

    56b18f02883a486cbb4c826028ecfe11

  • SHA1

    3e9a496bc38f73910cbd3d5576ec22d9b804a8dd

  • SHA256

    815b2bf1ddadfb46a27001e08246e8f82f629eb793963bef856d17e1ef9c4085

  • SHA512

    b507414c3d429d0d38dfffe2a5a3ec174012087790dd6c9ce86d16c402e68cc15788a1ec7c6baa8a3fc6f71c8a5695ef155288abc216660f9d5c54df5a75ad35

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

HOST _S

C2

44334333-31579.portmap.io:31579

Mutex

VNM_MUTEX_yC484ajmODj5OJv3Dx

Attributes
  • encryption_key

    psSc86jtY2yoNlEhs1Dp

  • install_name

    svchost.exe

  • log_directory

    liblogsconfig

  • reconnect_delay

    3000

  • startup_key

    Java Update jdk

  • subdirectory

    svchost

Targets

    • Target

      _-Venom.exe

    • Size

      534KB

    • MD5

      56b18f02883a486cbb4c826028ecfe11

    • SHA1

      3e9a496bc38f73910cbd3d5576ec22d9b804a8dd

    • SHA256

      815b2bf1ddadfb46a27001e08246e8f82f629eb793963bef856d17e1ef9c4085

    • SHA512

      b507414c3d429d0d38dfffe2a5a3ec174012087790dd6c9ce86d16c402e68cc15788a1ec7c6baa8a3fc6f71c8a5695ef155288abc216660f9d5c54df5a75ad35

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies Windows Defender Real-time Protection settings

    • Quasar Payload

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • VenomRAT

      VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Windows security modification

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

MITRE ATT&CK Enterprise v6

Tasks