Overview

overview

10

Static

static

10

42a93d7205...ad.exe

windows7-x64

10

42a93d7205...ad.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad

  • Size

    658KB

  • Sample

    221126-whjdtacg62

  • MD5

    41e39fc0ab363cd35fff3594134777b4

  • SHA1

    ccef504edaef4c92d3586a1d269506a1a9bb181a

  • SHA256

    42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad

  • SHA512

    bfe954804f36438292f8e8804824823cee39be90e8d683a9827b6de466cf563b0340a24d3af8b91d2ce6cb031caac0df32394c55c72f90a5361c96858c9b1042

  • SSDEEP

    12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/ha:KZ1xuVVjfFoynPaVBUR8f+kN10EB4

Score
10/10
darkcomethfevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

HF

C2

ambro.ddns.net:1604

Mutex

DC_MUTEX-FHGVDQZ

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    u7a8sNW0Gw40

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target

      42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad

    • Size

      658KB

    • MD5

      41e39fc0ab363cd35fff3594134777b4

    • SHA1

      ccef504edaef4c92d3586a1d269506a1a9bb181a

    • SHA256

      42a93d7205a88d8f72a62bef30f855fa3662f8d96ca5c90c033bd7dd555238ad

    • SHA512

      bfe954804f36438292f8e8804824823cee39be90e8d683a9827b6de466cf563b0340a24d3af8b91d2ce6cb031caac0df32394c55c72f90a5361c96858c9b1042

    • SSDEEP

      12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/ha:KZ1xuVVjfFoynPaVBUR8f+kN10EB4

    Score
    10/10
    darkcomethfevasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

2
T1112

Hidden Files and Directories

2
T1158

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks