Overview

overview

10

Static

static

10

3f0b1837b8...0f.exe

windows7-x64

10

3f0b1837b8...0f.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

  • Size

    658KB

  • Sample

    230328-hhnrmsbb9s

  • MD5

    3c41b88825ed5288001a0840f638bb15

  • SHA1

    f12e5059fa029c6eea893ab2e6745922d0d89570

  • SHA256

    3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f

  • SHA512

    bc4b3a9088e0fa70731573c0ac4a8bb4cff8ea68ef737010bfdc6eb0fadaad2e78dda5ca67be4830137f4c3a174d2fec9989b5a638d71d83b4299ede540f4401

  • SSDEEP

    12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h5:KZ1xuVVjfFoynPaVBUR8f+kN10EBT

Score
10/10
darkcometguest16evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

sussysdfffdfff343.duckdns.org:1604

Mutex

DC_MUTEX-6F4SERN

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    mKaVRbcLZnA8

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Google Handler

Targets

    • Target

      3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f.exe

    • Size

      658KB

    • MD5

      3c41b88825ed5288001a0840f638bb15

    • SHA1

      f12e5059fa029c6eea893ab2e6745922d0d89570

    • SHA256

      3f0b1837b836c8f882db35bc5b0510b47e6c06a996148371a05b2d2b8b46ee0f

    • SHA512

      bc4b3a9088e0fa70731573c0ac4a8bb4cff8ea68ef737010bfdc6eb0fadaad2e78dda5ca67be4830137f4c3a174d2fec9989b5a638d71d83b4299ede540f4401

    • SSDEEP

      12288:+9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h5:KZ1xuVVjfFoynPaVBUR8f+kN10EBT

    Score
    10/10
    darkcometguest16evasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • 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.

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • 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

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks