General

  • Target

    5f21d2aab871c215f1b4e71b275359144d0e730533596c3822732a7fe6d70759

  • Size

    908KB

  • Sample

    220731-wrmgtsbghn

  • MD5

    4b1f7a301abc074183a29f7ef6d938c4

  • SHA1

    a3072f0792f241a1c91da5d17827799701f6492d

  • SHA256

    5f21d2aab871c215f1b4e71b275359144d0e730533596c3822732a7fe6d70759

  • SHA512

    00a4818570a87faa2427c3101eecc64dd405d3bd12aaf91bb6f8ccfc69fdcfd13ad06eec83d1c1db964fca3341113f5cbc7d934ccc32b075d466af9fa03778ce

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16_min

C2

192.168.0.111:1604

Mutex

DCMIN_MUTEX-B93YPDE

Attributes
  • InstallPath

    DCSCMIN\IMDCSC.exe

  • gencode

    YZNRaKfSZ1x2

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    DarkComet RAT

Targets

    • Target

      5f21d2aab871c215f1b4e71b275359144d0e730533596c3822732a7fe6d70759

    • Size

      908KB

    • MD5

      4b1f7a301abc074183a29f7ef6d938c4

    • SHA1

      a3072f0792f241a1c91da5d17827799701f6492d

    • SHA256

      5f21d2aab871c215f1b4e71b275359144d0e730533596c3822732a7fe6d70759

    • SHA512

      00a4818570a87faa2427c3101eecc64dd405d3bd12aaf91bb6f8ccfc69fdcfd13ad06eec83d1c1db964fca3341113f5cbc7d934ccc32b075d466af9fa03778ce

    • Darkcomet

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

    • Modifies WinLogon for persistence

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Winlogon Helper DLL

1
T1004

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks