Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-01-2025 10:42

General

  • Target

    JaffaCakes118_64803bc5c37fa7f203c68e41d5ab2d10.exe

  • Size

    301KB

  • MD5

    64803bc5c37fa7f203c68e41d5ab2d10

  • SHA1

    18afc51cba779811426a3ec24785a953f6ac35c1

  • SHA256

    85434a2a08e8fdff6a79689da9dc0107af86f8004df6360e8465af49a7654e99

  • SHA512

    f7341c964071b63abf2e9f35300d7ae75b5aae91ab92a38658dc952cfe04669338ac45400f51418e43da8624cdcb95f135c03dd15a3be7ad799c27cedc4b37f7

  • SSDEEP

    6144:5YLVBjW718My2e1BBYFQ6VEMSlTDk76kPy:SP671TyFBV6CL3S6

Malware Config

Extracted

Family

darkcomet

Botnet

Âçëîì

C2

minebuckzor123.ddns.net:1604

Mutex

DC_MUTEX-SH6E3XG

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    2nxjw0GfTK2Y

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    Windows.dll

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 1 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 1 IoCs
  • Windows security modification 2 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in System32 directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 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 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64803bc5c37fa7f203c68e41d5ab2d10.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64803bc5c37fa7f203c68e41d5ab2d10.exe"
    1⤵
    • 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
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:880
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64803bc5c37fa7f203c68e41d5ab2d10.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2836
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_64803bc5c37fa7f203c68e41d5ab2d10.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:1244
    • 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:4308
      • 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:1076
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2280
    • C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
      "C:\Windows\system32\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
      • 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:4024
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2316

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    301KB

    MD5

    64803bc5c37fa7f203c68e41d5ab2d10

    SHA1

    18afc51cba779811426a3ec24785a953f6ac35c1

    SHA256

    85434a2a08e8fdff6a79689da9dc0107af86f8004df6360e8465af49a7654e99

    SHA512

    f7341c964071b63abf2e9f35300d7ae75b5aae91ab92a38658dc952cfe04669338ac45400f51418e43da8624cdcb95f135c03dd15a3be7ad799c27cedc4b37f7

  • memory/880-0-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/880-1-0x0000000002270000-0x0000000002271000-memory.dmp

    Filesize

    4KB

  • memory/880-14-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/2280-4-0x0000000001200000-0x0000000001201000-memory.dmp

    Filesize

    4KB

  • memory/2316-16-0x0000000000450000-0x0000000000451000-memory.dmp

    Filesize

    4KB

  • memory/4024-23-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-26-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-21-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-22-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-19-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-24-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-25-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-20-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-27-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-28-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-29-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-30-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-31-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-32-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB

  • memory/4024-33-0x0000000000400000-0x00000000004D6000-memory.dmp

    Filesize

    856KB