Overview

overview

10

Static

static

8d56200953...b1.exe

windows7-x64

10

8d56200953...b1.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    8d562009530552d38f5144f202ec0fcbe90f129469d42e78c16098088e3ad0b1

  • Size

    701KB

  • Sample

    221128-sf3swscc33

  • MD5

    b25024975e6b107aefb174749379b971

  • SHA1

    efa76167a48f3568fa26771bfe373647b715b348

  • SHA256

    8d562009530552d38f5144f202ec0fcbe90f129469d42e78c16098088e3ad0b1

  • SHA512

    36a0f69820def5cca466f580195bf89d13c6b43c8d87015a1e11f398bf81d14cade6b51c03243980c086d170a32c2db91ad198c82af563c008bf8c31ac6fad43

  • SSDEEP

    12288:x2BIlTNevFZO7DXDRb1egPRGGDmQmgS0/VGcwph889cuhx7k6:gaT8DO7Hp1BQGiQPS0di88aug6

Score
10/10
darkcometbiosevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Bios

C2

blazeros.zapto.org:3175

Mutex

DC_MUTEX-GS0NEC8

Attributes
  • InstallPath

    AdobeFlashUpdater\flashplayer16x32_mssd_aaa_aih.exe

  • gencode

    o4BdAqVuGTLH

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    AdobeFlashPlayerUpdateSvc

Targets

    • Target

      8d562009530552d38f5144f202ec0fcbe90f129469d42e78c16098088e3ad0b1

    • Size

      701KB

    • MD5

      b25024975e6b107aefb174749379b971

    • SHA1

      efa76167a48f3568fa26771bfe373647b715b348

    • SHA256

      8d562009530552d38f5144f202ec0fcbe90f129469d42e78c16098088e3ad0b1

    • SHA512

      36a0f69820def5cca466f580195bf89d13c6b43c8d87015a1e11f398bf81d14cade6b51c03243980c086d170a32c2db91ad198c82af563c008bf8c31ac6fad43

    • SSDEEP

      12288:x2BIlTNevFZO7DXDRb1egPRGGDmQmgS0/VGcwph889cuhx7k6:gaT8DO7Hp1BQGiQPS0di88aug6

    Score
    10/10
    darkcometbiosevasionpersistencerattrojan

    • 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.

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    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