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Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/01/2025, 20:20

General

  • Target

    5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe

  • Size

    283KB

  • MD5

    6c34fdea65a4058dd18567b20209b950

  • SHA1

    a7d7d0e2876dfce3b96b47e74b4699fbd6bb3bec

  • SHA256

    5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551

  • SHA512

    ae3bb1a0640d9641a545bc3d0c44388ce213f5049e1a896cf7e0b6fa1a8da755a9da7dc6dc29d294f4a4fdb9e907959cf0cb2fa104d08eac6c79915c87c7528d

  • SSDEEP

    6144:ycNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37hjW:ycW7KEZlPzCy37hjW

Malware Config

Extracted

Family

darkcomet

Botnet

tio

C2

2.82.41.139:80

Mutex

DC_MUTEX-277EST2

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    EnEvlyl9AxvG

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 6 IoCs
  • Modifies security service 2 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • UPX packed file 6 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe
    "C:\Users\Admin\AppData\Local\Temp\5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551N.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4496
    • C:\Windows\MSDCSC\msdcsc.exe
      "C:\Windows\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Executes dropped EXE
      • Windows security modification
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:4856
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Windows security bypass
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5012
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2692

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\MSDCSC\msdcsc.exe

    Filesize

    283KB

    MD5

    6c34fdea65a4058dd18567b20209b950

    SHA1

    a7d7d0e2876dfce3b96b47e74b4699fbd6bb3bec

    SHA256

    5063ad8b412f2676fd2b0adbd3cf3b07de285b768ad414b7a2cd093747e76551

    SHA512

    ae3bb1a0640d9641a545bc3d0c44388ce213f5049e1a896cf7e0b6fa1a8da755a9da7dc6dc29d294f4a4fdb9e907959cf0cb2fa104d08eac6c79915c87c7528d

  • memory/2692-67-0x00000000010E0000-0x00000000010E1000-memory.dmp

    Filesize

    4KB

  • memory/4496-0-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/4496-1-0x0000000002500000-0x0000000002501000-memory.dmp

    Filesize

    4KB

  • memory/4496-68-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/4856-62-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/4856-63-0x00000000009D0000-0x00000000009D1000-memory.dmp

    Filesize

    4KB

  • memory/4856-66-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB

  • memory/5012-64-0x0000000000400000-0x00000000004C7000-memory.dmp

    Filesize

    796KB