Overview

overview

10

Static

static

7

JaffaCakes...45.exe

windows7-x64

10

JaffaCakes...45.exe

windows10-2004-x64

7

Sharing

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General

  • Target
    JaffaCakes118_1262fa2c62545950f2d9f468e78d4245
  • Size 1.4MB
  • Sample250123-a5tx6stpay
  • SHA256 7ec408b7e3ff145bc355517a568c7c56abaddcfb702612e002cac0a47e47b5e7
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
darkcometguest16defense_evasiondiscoverypersistenceratthemidatrojan

Malware Config

Extracted

Family

  • darkcomet

Botnet

  • Guest16

C2

  • 127.0.0.1:1604

Mutex

  • DC_MUTEX-UNBJL0T

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    gQCYG1jH5wfi

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target
      JaffaCakes118_1262fa2c62545950f2d9f468e78d4245
    • Size 1.4MB
    • SHA256 7ec408b7e3ff145bc355517a568c7c56abaddcfb702612e002cac0a47e47b5e7
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    darkcometguest16defense_evasiondiscoverypersistenceratthemidatrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Darkcomet family

      darkcomet

    • Modifies WinLogon for persistence

      persistence

    • Checks BIOS information in registry

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

      defense_evasion

    • Loads dropped DLL

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

      themida

    • Adds Run key to start application

      persistence

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks