Analysis

  • max time kernel
    154s
  • max time network
    172s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-12-2022 13:38

General

  • Target

    c4648dcf38c8be2bd5014fb81c55fb5c29da969ebdea8bee8831c273a966657d.exe

  • Size

    955KB

  • MD5

    3aba0561bac692088a8124497b10bcc7

  • SHA1

    d4bd0472181a1fd571b4524208bc10da22901b80

  • SHA256

    c4648dcf38c8be2bd5014fb81c55fb5c29da969ebdea8bee8831c273a966657d

  • SHA512

    844d49380b6c47f0295f33d2282aa9b0d877b5bea990a45c05530ef314bf0d7d060d4587895db944e4ca2688ea492d9863d96cf9bb19cb07a511fa88d7731a86

  • SSDEEP

    24576:rdUvg0chwTjvBIvwaZQJniuL9W0pesrdc4jvU:rpKGoayZtd5nD

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

darkcomet-reborn.no-ip.org:80

Mutex

DC_MUTEX-F54S21D

Attributes
  • gencode

    V7o8b6zx0d0d

  • install

    false

  • offline_keylogger

    true

  • persistence

    false

Signatures

  • Darkcomet

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

  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c4648dcf38c8be2bd5014fb81c55fb5c29da969ebdea8bee8831c273a966657d.exe
    "C:\Users\Admin\AppData\Local\Temp\c4648dcf38c8be2bd5014fb81c55fb5c29da969ebdea8bee8831c273a966657d.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1368
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
          PID:1528

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scripting

    1
    T1064

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Scripting

    1
    T1064

    Modify Registry

    1
    T1112

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/536-132-0x00000000748D0000-0x0000000074E81000-memory.dmp
      Filesize

      5.7MB

    • memory/536-137-0x00000000748D0000-0x0000000074E81000-memory.dmp
      Filesize

      5.7MB

    • memory/1368-133-0x0000000000000000-mapping.dmp
    • memory/1368-134-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/1368-135-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/1368-136-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/1368-138-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB

    • memory/1368-139-0x0000000000400000-0x00000000004B5000-memory.dmp
      Filesize

      724KB