Analysis

  • max time kernel
    150s
  • 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
    07/02/2025, 23:29

General

  • Target

    JaffaCakes118_bc9a5b89f91f37a2d2a605c98745eb07.exe

  • Size

    854KB

  • MD5

    bc9a5b89f91f37a2d2a605c98745eb07

  • SHA1

    7f6894fad9ab377dca25e44607ea23451384e7b0

  • SHA256

    a3a8bf9a082e1825db80e7df1e6aebf289328cd4bcbd719f8d6da6b9686a6883

  • SHA512

    232c9f81e90aa6ceac059391056160520229af60a703a2fa830e524645fa09d14fc632d8916adfa352f3209f5a7a70a7a05f8f1d12e3bfe01061d3f4877a4c55

  • SSDEEP

    12288:lrrPfHyTJIoVzp5B+C35gTqqzXcJYN45iqLSnX+vIdBd1NXvrqvtg0O9B4M9DJ:l/4WgwoC/sJo45iq+yIZ1NfeVg0gBl

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

kaank11.zapto.org:15963

Mutex

DC_MUTEX-B22UUWY

Attributes
  • InstallPath

    Windupdt\JavaSun.exe

  • gencode

    x-tEbBWdArpJ

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    JavaSun

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
  • Downloads MZ/PE file 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 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 7 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 3 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc9a5b89f91f37a2d2a605c98745eb07.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc9a5b89f91f37a2d2a605c98745eb07.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3484
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc9a5b89f91f37a2d2a605c98745eb07.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc9a5b89f91f37a2d2a605c98745eb07.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1204
      • C:\Windupdt\JavaSun.exe
        "C:\Windupdt\JavaSun.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4244
        • C:\Windupdt\JavaSun.exe
          "C:\Windupdt\JavaSun.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:3880
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc9a5b89f91f37a2d2a605c98745eb07.exe"
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Suspicious use of WriteProcessMemory
        PID:1608
        • C:\Windows\SysWOW64\PING.EXE
          ping 127.0.0.1 -n 5
          4⤵
          • System Location Discovery: System Language Discovery
          • System Network Configuration Discovery: Internet Connection Discovery
          • Runs ping.exe
          PID:5096
  • C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
    "C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIyIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU5ODUiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODQ0NDQzNjAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0NjkwMjg4MTU5Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
    1⤵
    • System Location Discovery: System Language Discovery
    • System Network Configuration Discovery: Internet Connection Discovery
    PID:2056

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-3311063739-2594902809-44604183-1000\699c4b9cdebca7aaea5193cae8a50098_e82d6890-6286-4aa4-b40c-0ede4d70d32c

    Filesize

    50B

    MD5

    5b63d4dd8c04c88c0e30e494ec6a609a

    SHA1

    884d5a8bdc25fe794dc22ef9518009dcf0069d09

    SHA256

    4d93c22555b3169e5c13716ca59b8b22892c69b3025aea841afe5259698102fd

    SHA512

    15ff8551ac6b9de978050569bcdc26f44dfc06a0eaf445ac70fd45453a21bdafa3e4c8b4857d6a1c3226f4102a639682bdfb71d7b255062fb81a51c9126896cb

  • C:\Windupdt\JavaSun.exe

    Filesize

    854KB

    MD5

    bc9a5b89f91f37a2d2a605c98745eb07

    SHA1

    7f6894fad9ab377dca25e44607ea23451384e7b0

    SHA256

    a3a8bf9a082e1825db80e7df1e6aebf289328cd4bcbd719f8d6da6b9686a6883

    SHA512

    232c9f81e90aa6ceac059391056160520229af60a703a2fa830e524645fa09d14fc632d8916adfa352f3209f5a7a70a7a05f8f1d12e3bfe01061d3f4877a4c55

  • memory/1204-4-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/1204-5-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/1204-7-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/1204-9-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/1204-10-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/1204-28-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3484-0-0x0000000000400000-0x000000000044B000-memory.dmp

    Filesize

    300KB

  • memory/3484-8-0x0000000000400000-0x000000000044B000-memory.dmp

    Filesize

    300KB

  • memory/3880-34-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-42-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-35-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-36-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-32-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-37-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-39-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-40-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-41-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-51-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-43-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-44-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-45-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-46-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-47-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-48-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-49-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/3880-50-0x0000000000400000-0x00000000004C3000-memory.dmp

    Filesize

    780KB

  • memory/4244-33-0x0000000000400000-0x000000000044B000-memory.dmp

    Filesize

    300KB