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Analysis

  • max time kernel
    150s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    08/01/2025, 13:18

General

  • Target

    d5ef64be0349c256013994a7cf238502aa5cfecdd2cb3d08dcb53cc8090e1f30.exe

  • Size

    1.3MB

  • MD5

    c53ab36f5d13681b8e1580d5cfb7b8df

  • SHA1

    f1085ca88e4a05f36e47a15c64eb2924d32ed4a0

  • SHA256

    d5ef64be0349c256013994a7cf238502aa5cfecdd2cb3d08dcb53cc8090e1f30

  • SHA512

    e28fdc5c3c45d4eb9c7209975f3dfae55e6d8eddff364471040ce273064eca24fa325070ef46e4ea89b3d73878f1ca0ba58bedd34de40939a19e7eef2ab50311

  • SSDEEP

    24576:TYSj0spI7nYSj0spI7RYSj0spI7rYSj0spI7+qP9YsQnYoJU0oFGc:TYSY1nYSY1RYSY1rYSY1+89FOTSR

Malware Config

Extracted

Family

darkcomet

Botnet

Nubão

C2

prodigiohk.no-ip.org:6666

Mutex

Avast_Security-6PM6DD0

Attributes
  • InstallPath

    Drivers\msdcsc.exe

  • gencode

    Pnl2rf9hilzY

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Monitor Driver

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 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 16 IoCs

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

  • 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.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d5ef64be0349c256013994a7cf238502aa5cfecdd2cb3d08dcb53cc8090e1f30.exe
    "C:\Users\Admin\AppData\Local\Temp\d5ef64be0349c256013994a7cf238502aa5cfecdd2cb3d08dcb53cc8090e1f30.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:292
    • C:\Users\Admin\AppData\Local\Temp\d5ef64be0349c256013994a7cf238502aa5cfecdd2cb3d08dcb53cc8090e1f30.exe
      "C:\Users\Admin\AppData\Local\Temp\d5ef64be0349c256013994a7cf238502aa5cfecdd2cb3d08dcb53cc8090e1f30.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2580
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\d5ef64be0349c256013994a7cf238502aa5cfecdd2cb3d08dcb53cc8090e1f30.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2760
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\d5ef64be0349c256013994a7cf238502aa5cfecdd2cb3d08dcb53cc8090e1f30.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2904
      • 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:2808
        • 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:2736
      • C:\ProgramData\Microsoft\Windows\Start Menu\Drivers\msdcsc.exe
        "C:\ProgramData\Microsoft\Windows\Start Menu\Drivers\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2744
        • C:\ProgramData\Microsoft\Windows\Start Menu\Drivers\msdcsc.exe
          "C:\ProgramData\Microsoft\Windows\Start Menu\Drivers\msdcsc.exe"
          4⤵
          • 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:2440
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \ProgramData\Microsoft\Windows\Start Menu\Drivers\msdcsc.exe

    Filesize

    1.3MB

    MD5

    c53ab36f5d13681b8e1580d5cfb7b8df

    SHA1

    f1085ca88e4a05f36e47a15c64eb2924d32ed4a0

    SHA256

    d5ef64be0349c256013994a7cf238502aa5cfecdd2cb3d08dcb53cc8090e1f30

    SHA512

    e28fdc5c3c45d4eb9c7209975f3dfae55e6d8eddff364471040ce273064eca24fa325070ef46e4ea89b3d73878f1ca0ba58bedd34de40939a19e7eef2ab50311

  • memory/852-48-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2440-90-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2440-46-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2440-47-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2440-45-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2440-44-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-4-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-15-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-16-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-14-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-17-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-13-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-33-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-2-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-12-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-6-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2580-10-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB

  • memory/2580-11-0x0000000000400000-0x00000000004B7000-memory.dmp

    Filesize

    732KB