General

  • Target

    JaffaCakes118_92ac06564a24292909293e6b2ce2ba8e

  • Size

    732KB

  • Sample

    250329-xetaaavshs

  • MD5

    92ac06564a24292909293e6b2ce2ba8e

  • SHA1

    76b62276df07cee3f1f0ef7e2ae5876ef783b87b

  • SHA256

    48b506e985b951c923fe90a5fb01cfeddc9b9b0f719198b12da40d3d68e9d988

  • SHA512

    192dfe18307a2c3350745f1a59ef6a1fb3bf220c303a224f8edd47ef68f1939d9612a63a716164434b991df7392d854436673c22a4cb367ce6de773743ce3f4b

  • SSDEEP

    12288:bCD3Ck/9duMKjzD4IAvy21dVzJgfuCSPokOFLsoPz2SqqkqUcQxdBhXk:bg3hmMoD4GspJcNSgke45SRefdBhXk

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

baileyiscless.no-ip.org:1233

Mutex

DC_MUTEX-VNXFTVT

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    zcCDV5T8T0sl

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

rc4.plain

Extracted

Family

darkcomet

Attributes
  • gencode

  • install

    false

  • offline_keylogger

    false

  • persistence

    false

rc4.plain

Targets

    • Target

      JaffaCakes118_92ac06564a24292909293e6b2ce2ba8e

    • Size

      732KB

    • MD5

      92ac06564a24292909293e6b2ce2ba8e

    • SHA1

      76b62276df07cee3f1f0ef7e2ae5876ef783b87b

    • SHA256

      48b506e985b951c923fe90a5fb01cfeddc9b9b0f719198b12da40d3d68e9d988

    • SHA512

      192dfe18307a2c3350745f1a59ef6a1fb3bf220c303a224f8edd47ef68f1939d9612a63a716164434b991df7392d854436673c22a4cb367ce6de773743ce3f4b

    • SSDEEP

      12288:bCD3Ck/9duMKjzD4IAvy21dVzJgfuCSPokOFLsoPz2SqqkqUcQxdBhXk:bg3hmMoD4GspJcNSgke45SRefdBhXk

    • Darkcomet

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

    • Darkcomet family

    • Modifies WinLogon for persistence

    • Modifies firewall policy service

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks