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Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2025, 13:45

General

  • Target

    JaffaCakes118_40260ee6bccbcab5323b7b1da0a8fee6.exe

  • Size

    758KB

  • MD5

    40260ee6bccbcab5323b7b1da0a8fee6

  • SHA1

    227d8ef3dcdbaee8f006591891565d9634e9b2dd

  • SHA256

    8b4caf3214e9c5f206f90813188cef577d5430449606bc21939f46973c7f9c68

  • SHA512

    af14d8710e985cf4f304b7a6b933558a740154ae27977a638d93915c1163ce836c66e96c041f2b0d3c2e806d8e181553036bff38ebce78ef44364a49b6dc146c

  • SSDEEP

    12288:6XhpvNWw276S/DuoeFcfbmiJ99VPhYR5MTSHvLenELrWv1lZw4JuMkMh/fy452UJ:knAw2WWeFcfbP9VPSPMTSPL/rWvzq4JZ

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

masify-boy.no-ip.org:1604

Mutex

DC_MUTEX-7AJ3EFL

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    15DD4fh1ZD5B

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

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
  • Drops file in Drivers directory 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.

  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 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 37 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40260ee6bccbcab5323b7b1da0a8fee6.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40260ee6bccbcab5323b7b1da0a8fee6.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Drops file in Drivers directory
    • 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:224
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40260ee6bccbcab5323b7b1da0a8fee6.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4664
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_40260ee6bccbcab5323b7b1da0a8fee6.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:3456
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1152
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:4632
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • 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:2008
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3264

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    758KB

    MD5

    40260ee6bccbcab5323b7b1da0a8fee6

    SHA1

    227d8ef3dcdbaee8f006591891565d9634e9b2dd

    SHA256

    8b4caf3214e9c5f206f90813188cef577d5430449606bc21939f46973c7f9c68

    SHA512

    af14d8710e985cf4f304b7a6b933558a740154ae27977a638d93915c1163ce836c66e96c041f2b0d3c2e806d8e181553036bff38ebce78ef44364a49b6dc146c

  • memory/224-0-0x00000000006F0000-0x00000000006F1000-memory.dmp

    Filesize

    4KB

  • memory/224-62-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-70-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-72-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-65-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-66-0x0000000002140000-0x0000000002141000-memory.dmp

    Filesize

    4KB

  • memory/2008-67-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-68-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-69-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-63-0x0000000002140000-0x0000000002141000-memory.dmp

    Filesize

    4KB

  • memory/2008-71-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-79-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-73-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-74-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-75-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-76-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-77-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/2008-78-0x0000000000400000-0x00000000004CD000-memory.dmp

    Filesize

    820KB

  • memory/3264-64-0x0000000000E80000-0x0000000000E81000-memory.dmp

    Filesize

    4KB