Overview

overview

10

Static

static

10

_a88cfb093...66.exe

windows10-2004-x64

10

_a88cfb093...66.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    _a88cfb093e1297165940818f7bb6e8441fb34462c021c525cba8683b8630e566.exe
  • Size 757KB
  • Sample260426-xt19fae13x
  • SHA256 a88cfb093e1297165940818f7bb6e8441fb34462c021c525cba8683b8630e566
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
darkcometguest56discoverypersistencerattrojan

Malware Config

Extracted

Family

  • darkcomet

Botnet

  • Guest56

C2

  • kyb.uk.com:1604

  • acash.gb.net:1604

Mutex

  • DC_MUTEX-2R68XE1

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    JrrL5yuJ70yy

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

rc4.plain

Targets

    • Target
      _a88cfb093e1297165940818f7bb6e8441fb34462c021c525cba8683b8630e566.exe
    • Size 757KB
    • SHA256 a88cfb093e1297165940818f7bb6e8441fb34462c021c525cba8683b8630e566
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    guest56discoverydarkcometpersistencerattrojan

    • Family: Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks