Overview

overview

10

Static

static

3

JaffaCakes...8b.exe

windows7-x64

10

JaffaCakes...8b.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b
  • Size 916KB
  • Sample250312-cbvcystyev
  • SHA256 44c919a3941674b93baf08d0a3566180b6f7bb6e44ebc51d4579a94876c56b6e
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
darkcometguest16discoverypersistencerattrojan

Malware Config

Extracted

Family

  • darkcomet

Attributes
  • gencode

  • install

    false

  • offline_keylogger

    false

  • persistence

    false

rc4.plain

Extracted

Family

  • darkcomet

Botnet

  • Guest16

C2

  • vaghavethepower.no-ip.biz:2020

Mutex

  • DC_MUTEX-U9VTDMU

Attributes
  • InstallPath

    Windowsupdate\winupdate.exe

  • gencode

    htW7n/HjEf$B

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    winupdater

rc4.plain

Targets

    • Target
      JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b
    • Size 916KB
    • SHA256 44c919a3941674b93baf08d0a3566180b6f7bb6e44ebc51d4579a94876c56b6e
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    darkcometguest16discoverypersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Darkcomet family

      darkcomet

    • Modifies WinLogon for persistence

      persistence

    • Drops file in Drivers directory

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks