Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/03/2025, 14:24

General

  • Target

    JaffaCakes118_398cdafaa110b29796ee6cabb7368dbb.exe

  • Size

    1.4MB

  • MD5

    398cdafaa110b29796ee6cabb7368dbb

  • SHA1

    074efde68134f0c8823552a72a2f885798f4f9cc

  • SHA256

    5109f48db1772efeb0d95ba5e5a1a5f5331be6aab648726c4b8dd8a368d84058

  • SHA512

    4fcc8d4490c6926797f34e7a6f6eca2c09c403a63e7ee045df41232d7481b6bafa57611280068bc3d7c30b2a444a7d78383fe725cbe5d794f9897613879869cf

  • SSDEEP

    24576:aRmJkcoQricOIQxiZY1ia2z07M/131vs9Dd0uwjR9IRFUofnQV5b4:/JZoQrbTFZY1iaI0U1lvs9DdhsR9PoII

Malware Config

Extracted

Family

darkcomet

Botnet

ffllasshh

C2

congonicro.no-ip.org:1604

congonicro.no-ip.org:4500

congonicro.no-ip.org:2600

Mutex

DC_MUTEX-14PTXCN

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    jDSGrn6QdmsU

  • 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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 10 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 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 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\JaffaCakes118_398cdafaa110b29796ee6cabb7368dbb.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_398cdafaa110b29796ee6cabb7368dbb.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_398cdafaa110b29796ee6cabb7368dbb.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_398cdafaa110b29796ee6cabb7368dbb.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1408
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_398cdafaa110b29796ee6cabb7368dbb.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:848
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_398cdafaa110b29796ee6cabb7368dbb.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:1756
      • 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:1228
        • 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:752
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Deletes itself
        • System Location Discovery: System Language Discovery
        PID:4404
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2880
        • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          "C:\Users\Admin\Documents\MSDCSC\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:1912
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:916

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

    Filesize

    1.4MB

    MD5

    398cdafaa110b29796ee6cabb7368dbb

    SHA1

    074efde68134f0c8823552a72a2f885798f4f9cc

    SHA256

    5109f48db1772efeb0d95ba5e5a1a5f5331be6aab648726c4b8dd8a368d84058

    SHA512

    4fcc8d4490c6926797f34e7a6f6eca2c09c403a63e7ee045df41232d7481b6bafa57611280068bc3d7c30b2a444a7d78383fe725cbe5d794f9897613879869cf

  • memory/916-72-0x0000000000430000-0x0000000000431000-memory.dmp

    Filesize

    4KB

  • memory/1408-75-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1408-1-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1408-4-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1408-3-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1408-2-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1408-0-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-88-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-82-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-73-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-71-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-70-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-78-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-91-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-81-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-79-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-74-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-83-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-84-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-85-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-86-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-87-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-80-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-89-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1912-90-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/4404-8-0x0000000000EA0000-0x0000000000EA1000-memory.dmp

    Filesize

    4KB