Analysis

  • max time kernel
    60s
  • max time network
    53s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    02/03/2025, 01:05

General

  • Target

    501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe

  • Size

    1.1MB

  • MD5

    a77502350cda394c2d5545f3e0978d6c

  • SHA1

    cd2852066d18f90cccda274627d754cd7a10a901

  • SHA256

    501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb

  • SHA512

    230391cfa3c129317c5efc312021acdc7b7f3f7f95639e6f904217eacf83e5e4542000b26530fada8b2e8ed0805dab5851e2a1803e227f9dcaa8fcb6b9558b4c

  • SSDEEP

    24576:D1Z1xuVVjfFoynPaVBUR8f+kN10EBmmbm:DPQDgok30dmbm

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

egegeg.duckdns.org:1604

Mutex

DC_MUTEX-GMXC7Q3

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    bEqrgGM1ijfq

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

rc4.plain

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 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of FindShellTrayWindow 63 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe
    "C:\Users\Admin\AppData\Local\Temp\501377699da121100bc6e9180ecf9471b85264c2ea22641701b7d21995e3c3bb.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2464
    • C:\Users\Admin\AppData\Local\Temp\F.EXE
      "C:\Users\Admin\AppData\Local\Temp\F.EXE"
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1992
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\F.EXE" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2156
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\F.EXE" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:1852
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2864
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2088
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2712
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Executes dropped EXE
        • Windows security modification
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        • System policy modification
        PID:2664
        • C:\Windows\SysWOW64\notepad.exe
          notepad
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2620
  • C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    1⤵
      PID:1724
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\Desktop\PingCompare.js"
      1⤵
      • System Network Configuration Discovery: Internet Connection Discovery
      PID:2372
    • C:\Program Files\VideoLAN\VLC\vlc.exe
      "C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Public\Videos\Sample Videos\Wildlife.wmv"
      1⤵
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:2296

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • \Users\Admin\AppData\Local\Temp\F.EXE

      Filesize

      857KB

      MD5

      c72eec4eb51c62ad455de07d00a77898

      SHA1

      0251b8765a12ecb029bae796235e8283f04e96c4

      SHA256

      93435ead1cf9caa1edc3c0018b2a98c05bc0fb44af68331f5562b9aebbae1f80

      SHA512

      31da3b9a762d7a6e512e9cab8d7383e9f855d16e88652b49629ba51ef6f8b93c9032885e89d9ad5af7afad908bce179679883fcea85c86cc15411bae65018322

    • memory/1992-9-0x00000000003E0000-0x00000000003E1000-memory.dmp

      Filesize

      4KB

    • memory/1992-79-0x0000000000400000-0x00000000004E3000-memory.dmp

      Filesize

      908KB

    • memory/2296-95-0x000007FEF6E10000-0x000007FEF6E28000-memory.dmp

      Filesize

      96KB

    • memory/2296-96-0x000007FEF6DF0000-0x000007FEF6E07000-memory.dmp

      Filesize

      92KB

    • memory/2296-93-0x000007FEF6E30000-0x000007FEF6E64000-memory.dmp

      Filesize

      208KB

    • memory/2296-92-0x000000013F160000-0x000000013F258000-memory.dmp

      Filesize

      992KB

    • memory/2620-78-0x00000000001A0000-0x00000000001A1000-memory.dmp

      Filesize

      4KB

    • memory/2664-89-0x0000000000400000-0x00000000004E3000-memory.dmp

      Filesize

      908KB

    • memory/2664-82-0x0000000000400000-0x00000000004E3000-memory.dmp

      Filesize

      908KB

    • memory/2712-81-0x00000000003E0000-0x0000000000410000-memory.dmp

      Filesize

      192KB

    • memory/2712-30-0x00000000003E0000-0x0000000000410000-memory.dmp

      Filesize

      192KB

    • memory/2712-14-0x0000000000080000-0x0000000000081000-memory.dmp

      Filesize

      4KB

    • memory/2712-29-0x0000000000190000-0x0000000000191000-memory.dmp

      Filesize

      4KB