Analysis

  • max time kernel
    140s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/10/2024, 05:32

General

  • Target

    81cd522bbee329748be2dd219c88cce5_JaffaCakes118.dll

  • Size

    612KB

  • MD5

    81cd522bbee329748be2dd219c88cce5

  • SHA1

    1a70ded79eaec230f7810a0eb1dd6ed3f98ffd78

  • SHA256

    19ddc1f60f505a17da34fde25a21e8ea5aa604e0e060be2c13f07cbe155cb464

  • SHA512

    7ab39b101abe81948a99bb302dde9f8b718994dea7a43f297146efc2772049889f06ac9b7d81898c7508b30ef4b788c6b8d486e714cf43910aaa71b07b36da19

  • SSDEEP

    6144:IlXpXQs3kYR7M/yXWvW0/DVmVmYe0F4v5qsLKTbwhi4tVso9YAw5:0hPUYRo/dJ2TT4RjMkhi4zYAw5

Malware Config

Signatures

  • Blocklisted process makes network request 5 IoCs
  • Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • 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 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\81cd522bbee329748be2dd219c88cce5_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1692
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\81cd522bbee329748be2dd219c88cce5_JaffaCakes118.dll,#1
      2⤵
      • Server Software Component: Terminal Services DLL
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3228
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c del "C:\Windows\SysWOW64\rundll32.exe" > nul
        3⤵
        • System Location Discovery: System Language Discovery
        PID:5012
  • C:\Windows\SysWOW64\svchost.exe
    C:\Windows\SysWOW64\svchost.exe -k ".Net CLR"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2708
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe c:\users\admin\appdata\local\temp\81cd522bbee329748be2dd219c88cce5_jaffacakes118.dll, Launch
      2⤵
      • Blocklisted process makes network request
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:1332

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • memory/1332-1-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB

        • memory/1332-4-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB

        • memory/1332-8-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB

        • memory/1332-12-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB

        • memory/1332-16-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB

        • memory/1332-20-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB

        • memory/1332-24-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB

        • memory/1332-26-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB

        • memory/1332-30-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB

        • memory/2708-2-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB

        • memory/2708-25-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB

        • memory/3228-0-0x0000000074CA0000-0x0000000074DBE000-memory.dmp

          Filesize

          1.1MB