Overview

overview

10

Static

static

3

WinLocker_....4.exe

windows10-1703-x64

10

Sharing

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General

  • Target

    WinLocker_Builder_0.4.exe

  • Size

    1.7MB

  • Sample

    240311-n4ct6ahg98

  • MD5

    410fe67a1b89105486140bb30a6b9ca9

  • SHA1

    f8d50097c608da77637977f64e7a48f3da7bc092

  • SHA256

    ff77277245800b3aa373bc1a9e789014ee50af2450133ae10c1569d84f32b2cf

  • SHA512

    94dd01181936b14b3b6d638e3aee8016d8674e0c3d5a1b48c4e8e71d6ac940aeb359eeb29fff4abb16585520d0720de0a56d83a866058e6741d9a052486383e5

  • SSDEEP

    24576:pGYwefQHQnJceBaVvlW1t39AJ4FsnAwtir2CESobryiGzozFg7c:pGYp5uvC9sAwtUH02c

Score
10/10
darkcometguest16persistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

gameservice.ddns.net:4320

Mutex

DC_MUTEX-WBUNVXD

Attributes
  • InstallPath

    AudioDriver\taskhost.exe

  • gencode

    EWSsWwgyJrUD

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    AudioDriver

Targets

    • Target

      WinLocker_Builder_0.4.exe

    • Size

      1.7MB

    • MD5

      410fe67a1b89105486140bb30a6b9ca9

    • SHA1

      f8d50097c608da77637977f64e7a48f3da7bc092

    • SHA256

      ff77277245800b3aa373bc1a9e789014ee50af2450133ae10c1569d84f32b2cf

    • SHA512

      94dd01181936b14b3b6d638e3aee8016d8674e0c3d5a1b48c4e8e71d6ac940aeb359eeb29fff4abb16585520d0720de0a56d83a866058e6741d9a052486383e5

    • SSDEEP

      24576:pGYwefQHQnJceBaVvlW1t39AJ4FsnAwtir2CESobryiGzozFg7c:pGYp5uvC9sAwtUH02c

    Score
    10/10
    darkcometguest16persistencerattrojan

    • 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

    behavioral1

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks