Analysis

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

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    11/02/2025, 21:40

General

  • Target

    JaffaCakes118_ea8b87801bb8b0f57c091264a1e92152.exe

  • Size

    691KB

  • MD5

    ea8b87801bb8b0f57c091264a1e92152

  • SHA1

    31a8d44f2babcf54dcc64335f69de3a5c543f4a7

  • SHA256

    66b290bd6e0e5c86115f902a522bcf392c74439ee501cfbcbcfd177c3b6e1ac0

  • SHA512

    640813afa9e4a60ea4ffca18751dab92f3512beb6d161e42646651b1fd7480ac91db4314ffafa1617b2237df28ef2a521371c9aedc014a3be457520f0c1cbacb

  • SSDEEP

    12288:vGfWXLjuau1NGcCd5VpJslcXIPbdH7Ojtfuju+YzXDy0dIhKpk:vRXLTu1Nudl6IIPbB7q

Malware Config

Extracted

Family

darkcomet

Botnet

Hijack

C2

abcdgl.mooo.com:1604

winrarsfx.linkpc.net:1604

glhacker.zapto.org:1604

winrarsfx.zapto.org:1604

Mutex

DC_MUTEX-7HFL2F5

Attributes
  • InstallPath

    Microsoft\msdcsc.exe

  • gencode

    BwrRwkSkXJa3

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

rc4.plain

Extracted

Family

darkcomet

Attributes
  • gencode

  • install

    false

  • offline_keylogger

    false

  • persistence

    false

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
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 3 IoCs
  • 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.

  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8b87801bb8b0f57c091264a1e92152.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8b87801bb8b0f57c091264a1e92152.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2508
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8b87801bb8b0f57c091264a1e92152.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8b87801bb8b0f57c091264a1e92152.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Loads dropped DLL
      • Adds Run key to start application
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2492
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8b87801bb8b0f57c091264a1e92152.exe" +s +h
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2296
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8b87801bb8b0f57c091264a1e92152.exe" +s +h
          4⤵
          • Sets file to hidden
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:2720
      • 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:2856
        • 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:2908
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Deletes itself
        • System Location Discovery: System Language Discovery
        PID:2660
      • C:\Windows\SysWOW64\Microsoft\msdcsc.exe
        "C:\Windows\system32\Microsoft\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2156
        • C:\Windows\SysWOW64\Microsoft\msdcsc.exe
          "C:\Windows\system32\Microsoft\msdcsc.exe"
          4⤵
          • Modifies firewall policy service
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2792
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:2624

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\Microsoft\msdcsc.exe

    Filesize

    691KB

    MD5

    ea8b87801bb8b0f57c091264a1e92152

    SHA1

    31a8d44f2babcf54dcc64335f69de3a5c543f4a7

    SHA256

    66b290bd6e0e5c86115f902a522bcf392c74439ee501cfbcbcfd177c3b6e1ac0

    SHA512

    640813afa9e4a60ea4ffca18751dab92f3512beb6d161e42646651b1fd7480ac91db4314ffafa1617b2237df28ef2a521371c9aedc014a3be457520f0c1cbacb

  • memory/2492-8-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-12-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-0-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-2-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-20-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-19-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-18-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-17-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-4-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-10-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-16-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-113-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-6-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2492-14-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2660-24-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB

  • memory/2660-39-0x0000000000190000-0x0000000000191000-memory.dmp

    Filesize

    4KB

  • memory/2792-69-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB