Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250207-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250207-enlocale:en-usos:windows10-2004-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

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
  • Downloads MZ/PE file 1 IoCs
  • 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
  • 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 11 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.

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 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:1800
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8b87801bb8b0f57c091264a1e92152.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea8b87801bb8b0f57c091264a1e92152.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Adds Run key to start application
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:512
      • 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:448
        • 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:3608
      • 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:2588
        • 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:1016
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Deletes itself
        • System Location Discovery: System Language Discovery
        PID:2892
      • C:\Windows\SysWOW64\Microsoft\msdcsc.exe
        "C:\Windows\system32\Microsoft\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:680
        • 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:1856
          • C:\Windows\SysWOW64\notepad.exe
            notepad
            5⤵
            • System Location Discovery: System Language Discovery
            PID:4828
  • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
    "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI0IiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5MjEiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODE5ODA3NzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTk4NTczMDU4Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
    1⤵
    • System Location Discovery: System Language Discovery
    • System Network Configuration Discovery: Internet Connection Discovery
    PID:2316

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

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

    Filesize

    691KB

    MD5

    ea8b87801bb8b0f57c091264a1e92152

    SHA1

    31a8d44f2babcf54dcc64335f69de3a5c543f4a7

    SHA256

    66b290bd6e0e5c86115f902a522bcf392c74439ee501cfbcbcfd177c3b6e1ac0

    SHA512

    640813afa9e4a60ea4ffca18751dab92f3512beb6d161e42646651b1fd7480ac91db4314ffafa1617b2237df28ef2a521371c9aedc014a3be457520f0c1cbacb

  • memory/512-1-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/512-0-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/512-2-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/512-3-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/512-4-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/512-47-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/1856-46-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/1856-43-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/1856-45-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/1856-51-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/1856-53-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/1856-55-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/1856-57-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/1856-59-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/1856-62-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/1856-63-0x0000000000400000-0x00000000004B9000-memory.dmp

    Filesize

    740KB

  • memory/2892-8-0x0000000000560000-0x0000000000561000-memory.dmp

    Filesize

    4KB

  • memory/4828-44-0x0000000000970000-0x0000000000971000-memory.dmp

    Filesize

    4KB