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
    16-10-2024 16:52

General

  • Target

    4df44ca2c7570f3d9e9c30406b3b8bd4_JaffaCakes118.exe

  • Size

    892KB

  • MD5

    4df44ca2c7570f3d9e9c30406b3b8bd4

  • SHA1

    28339f2ff0068f9c8a897b4577725427a44e850f

  • SHA256

    0ee7becba3baec32cbef0f2fdfc75785ce4a76652e8994f86c6eeaf4f47999fb

  • SHA512

    b4da154cd7bab93cbd31882c47f999f00ff120a9e0ca44a85efd75137f7be1b6710e9387aa06411a82f883a8b4c3c1885f81fa8ff9a6551159e015f495502a08

  • SSDEEP

    24576:GwQrN2K3yWds0JkKyVykcinQ3v0lHKqq7FoAKakRbqN+p+:GlQadsLQviQcHKqqpPT+p+

Malware Config

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • 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
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • 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
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • UPX packed file 12 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 7 IoCs

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

  • Checks processor information in registry 2 TTPs 8 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4df44ca2c7570f3d9e9c30406b3b8bd4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\4df44ca2c7570f3d9e9c30406b3b8bd4_JaffaCakes118.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4084
    • C:\Users\Admin\AppData\Local\Temp\4df44ca2c7570f3d9e9c30406b3b8bd4_JaffaCakes118.exe
      C:\Users\Admin\AppData\Local\Temp\4df44ca2c7570f3d9e9c30406b3b8bd4_JaffaCakes118.exe
      2⤵
      • Modifies WinLogon for persistence
      • Checks BIOS information in registry
      • Checks computer location settings
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:844
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        PID:3280
      • C:\Windows\SysWOW64\explorer.exe
        "C:\Windows\SysWOW64\explorer.exe"
        3⤵
          PID:2912
        • C:\Windupdt\winupdate.exe
          "C:\Windupdt\winupdate.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:2124
          • C:\Windupdt\winupdate.exe
            C:\Windupdt\winupdate.exe
            4⤵
            • Modifies firewall policy service
            • Modifies security service
            • Windows security bypass
            • Disables RegEdit via registry modification
            • Checks BIOS information in registry
            • Executes dropped EXE
            • Windows security modification
            • System Location Discovery: System Language Discovery
            • Checks processor information in registry
            • Enumerates system info in registry
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • System policy modification
            PID:468
            • C:\Windows\SysWOW64\explorer.exe
              "C:\Windows\SysWOW64\explorer.exe"
              5⤵
                PID:4980
              • C:\Windows\SysWOW64\notepad.exe
                C:\Windows\SysWOW64\notepad.exe
                5⤵
                • System Location Discovery: System Language Discovery
                PID:2312
          • C:\Windows\SysWOW64\notepad.exe
            C:\Windows\SysWOW64\notepad.exe
            3⤵
            • Deletes itself
            • System Location Discovery: System Language Discovery
            PID:1500

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Windupdt\winupdate.exe

        Filesize

        892KB

        MD5

        4df44ca2c7570f3d9e9c30406b3b8bd4

        SHA1

        28339f2ff0068f9c8a897b4577725427a44e850f

        SHA256

        0ee7becba3baec32cbef0f2fdfc75785ce4a76652e8994f86c6eeaf4f47999fb

        SHA512

        b4da154cd7bab93cbd31882c47f999f00ff120a9e0ca44a85efd75137f7be1b6710e9387aa06411a82f883a8b4c3c1885f81fa8ff9a6551159e015f495502a08

      • \??\c:\users\admin\appdata\local\temp\CDD96259

        Filesize

        14B

        MD5

        d81d6e81846895cfafcb03cb37a214cc

        SHA1

        b29fc15f0b3822ed1c7edfe5823e8ed705187978

        SHA256

        2559699c20c124caf845d6ea3544d2b812b9a6f581bff7ba4709c72231f1ad29

        SHA512

        058d960d2c7aa9b68232d20bd8e37c23349f27f03da4f8b895d1793faa587bcd372ee74bec13cd648f4dc66a50bd324215fac64e4868cdb85f1b74b6f7e24074

      • memory/468-88-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/468-89-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/468-90-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/468-85-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/468-83-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/468-82-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/844-9-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/844-75-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/844-11-0x0000000000CC0000-0x0000000000CC1000-memory.dmp

        Filesize

        4KB

      • memory/844-10-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/844-6-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/844-5-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/844-4-0x0000000013140000-0x000000001320D000-memory.dmp

        Filesize

        820KB

      • memory/1500-74-0x0000000000810000-0x0000000000811000-memory.dmp

        Filesize

        4KB

      • memory/2124-86-0x0000000000400000-0x00000000007A6000-memory.dmp

        Filesize

        3.6MB

      • memory/2312-87-0x0000000000730000-0x0000000000731000-memory.dmp

        Filesize

        4KB

      • memory/3280-13-0x00000000005E0000-0x00000000005E1000-memory.dmp

        Filesize

        4KB

      • memory/4084-0-0x0000000000400000-0x00000000007A6000-memory.dmp

        Filesize

        3.6MB

      • memory/4084-8-0x0000000000400000-0x00000000007A6000-memory.dmp

        Filesize

        3.6MB