Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250211-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250211-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/02/2025, 20:50

General

  • Target

    JaffaCakes118_ea271405c5d515469356a082f5a16dd6.exe

  • Size

    891KB

  • MD5

    ea271405c5d515469356a082f5a16dd6

  • SHA1

    bf2b2451d4d8e656067c81cf14362b9702ed7a57

  • SHA256

    91a04cda5888aa5c4e0e8cdd09d5576836d3714c39446a510ddb7f88ae372ae4

  • SHA512

    dc3c5ea202e4e311cbc35dc8d53b616bf657de01d91da9ce0e92ed39616424b3002035e41fe915791ba53f9b8822ea2c9100b22777ea0a4dac438be71a283440

  • SSDEEP

    24576:kKtgTB/3lPQZLh9h5qKUpEZl8fCjDS/2V0cs3:TAB/gLhw/ajDo2V0cK

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

mylovely.zapto.org:1604

Mutex

DC_MUTEX-FJ778YZ

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    ohg$v1#/-qld

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicrosoftUpdate

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
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 33 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea271405c5d515469356a082f5a16dd6.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea271405c5d515469356a082f5a16dd6.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3080
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea271405c5d515469356a082f5a16dd6.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ea271405c5d515469356a082f5a16dd6.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:4392
      • C:\Users\Admin\AppData\Local\Temp\FACEBOOK.EXE
        "C:\Users\Admin\AppData\Local\Temp\FACEBOOK.EXE"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:4136
      • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
        "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1848
        • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
          "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
          4⤵
          • Modifies firewall policy service
          • Modifies security service
          • Windows security bypass
          • 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
          PID:4384
          • C:\Program Files (x86)\Internet Explorer\iexplore.exe
            "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
            5⤵
              PID:2472
            • C:\Windows\explorer.exe
              "C:\Windows\explorer.exe"
              5⤵
                PID:1844

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\FACEBOOK.EXE

        Filesize

        409KB

        MD5

        a376b12add1f0341b8eb607994171a8d

        SHA1

        833518195776950b175cf681de819a249a5142a6

        SHA256

        c1bb4bbdca067c0419c4f1ddf1ef48b77dc4c8221d6fc6c3dcc1921b4d02299e

        SHA512

        4445fff21b4bae2dc56293b14ef55769423afab59eecc91b77ae05f17d87335eee41ffcad4bbfc71f7e47de4ff839b1e80e52c8d9554eb5dd110a33cc24a1b63

      • C:\Users\Admin\AppData\Roaming\Microsoft\Crypto\RSA\S-1-5-21-2508704002-2325818048-3575902788-1000\699c4b9cdebca7aaea5193cae8a50098_1eefde30-3eae-49e6-8887-f6fb7b1c7c94

        Filesize

        50B

        MD5

        5b63d4dd8c04c88c0e30e494ec6a609a

        SHA1

        884d5a8bdc25fe794dc22ef9518009dcf0069d09

        SHA256

        4d93c22555b3169e5c13716ca59b8b22892c69b3025aea841afe5259698102fd

        SHA512

        15ff8551ac6b9de978050569bcdc26f44dfc06a0eaf445ac70fd45453a21bdafa3e4c8b4857d6a1c3226f4102a639682bdfb71d7b255062fb81a51c9126896cb

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

        Filesize

        891KB

        MD5

        ea271405c5d515469356a082f5a16dd6

        SHA1

        bf2b2451d4d8e656067c81cf14362b9702ed7a57

        SHA256

        91a04cda5888aa5c4e0e8cdd09d5576836d3714c39446a510ddb7f88ae372ae4

        SHA512

        dc3c5ea202e4e311cbc35dc8d53b616bf657de01d91da9ce0e92ed39616424b3002035e41fe915791ba53f9b8822ea2c9100b22777ea0a4dac438be71a283440

      • memory/1848-48-0x0000000000400000-0x000000000045B000-memory.dmp

        Filesize

        364KB

      • memory/3080-0-0x0000000000400000-0x000000000045B000-memory.dmp

        Filesize

        364KB

      • memory/3080-8-0x0000000000400000-0x000000000045B000-memory.dmp

        Filesize

        364KB

      • memory/4136-58-0x0000000000400000-0x00000000004C1000-memory.dmp

        Filesize

        772KB

      • memory/4136-25-0x0000000000400000-0x00000000004C1000-memory.dmp

        Filesize

        772KB

      • memory/4384-52-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-74-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-88-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-86-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-46-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-84-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-49-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-45-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-82-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-50-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-80-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-53-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-51-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-78-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-59-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-61-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-62-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-64-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-66-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-68-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-70-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-72-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4384-76-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4392-11-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4392-6-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4392-4-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4392-7-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4392-10-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4392-35-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB

      • memory/4392-9-0x0000000000400000-0x000000000054C000-memory.dmp

        Filesize

        1.3MB