Analysis

  • max time kernel
    149s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240704-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240704-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-07-2024 07:35

General

  • Target

    27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe

  • Size

    147KB

  • MD5

    27bfcb366780fda0103674cf586b9f9a

  • SHA1

    375dd2f573fc4a16d15ae5983380763cc2a63ada

  • SHA256

    981453ac4e6fa994cd9e139250002dbebd65266e1ec520df609a834a9f6604f1

  • SHA512

    203ef83e9a5a928965a6c7850326ad2aed10ee44350b1b525c0d599bfbb98a3fad72c0ed3d9b81f621c1bf3c617e563aeea5a9d11a72bddb5c35903e67fad4da

  • SSDEEP

    3072:I5yGxdzttaGOQ00f/MLxSbWxsjdf0PhPJslB9dq/U0:/GBYGOQb8LxtxsdRR+L

Malware Config

Extracted

Family

metasploit

Version

encoder/call4_dword_xor

Signatures

  • MetaSploit

    Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.

  • Modifies firewall policy service 3 TTPs 8 IoCs
  • 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
  • UPX packed file 8 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3492
      • C:\Users\Admin\AppData\Local\Temp\27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe
        "C:\Users\Admin\AppData\Local\Temp\27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3288
        • C:\Users\Admin\AppData\Local\Temp\27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\27bfcb366780fda0103674cf586b9f9a_JaffaCakes118.exe"
          3⤵
          • Checks computer location settings
          • Maps connected drives based on registry
          • Drops file in System32 directory
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:3720
          • C:\Windows\SysWOW64\igfxbk86.exe
            "C:\Windows\SysWOW64\igfxbk86.exe" C:\Users\Admin\AppData\Local\Temp\27BFCB~1.EXE
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of UnmapMainImage
            • Suspicious use of WriteProcessMemory
            PID:4172
            • C:\Windows\SysWOW64\igfxbk86.exe
              "C:\Windows\SysWOW64\igfxbk86.exe" C:\Users\Admin\AppData\Local\Temp\27BFCB~1.EXE
              5⤵
              • Modifies firewall policy service
              • Deletes itself
              • Executes dropped EXE
              • Adds Run key to start application
              • Maps connected drives based on registry
              • Drops file in System32 directory
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4480

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\SysWOW64\igfxbk86.exe

      Filesize

      147KB

      MD5

      27bfcb366780fda0103674cf586b9f9a

      SHA1

      375dd2f573fc4a16d15ae5983380763cc2a63ada

      SHA256

      981453ac4e6fa994cd9e139250002dbebd65266e1ec520df609a834a9f6604f1

      SHA512

      203ef83e9a5a928965a6c7850326ad2aed10ee44350b1b525c0d599bfbb98a3fad72c0ed3d9b81f621c1bf3c617e563aeea5a9d11a72bddb5c35903e67fad4da

    • memory/3720-0-0x0000000000400000-0x000000000044C000-memory.dmp

      Filesize

      304KB

    • memory/3720-2-0x0000000000400000-0x000000000044C000-memory.dmp

      Filesize

      304KB

    • memory/3720-3-0x0000000000400000-0x000000000044C000-memory.dmp

      Filesize

      304KB

    • memory/3720-4-0x0000000000400000-0x000000000044C000-memory.dmp

      Filesize

      304KB

    • memory/3720-44-0x0000000000400000-0x000000000044C000-memory.dmp

      Filesize

      304KB

    • memory/4480-42-0x0000000000400000-0x0000000000429000-memory.dmp

      Filesize

      164KB

    • memory/4480-46-0x0000000000400000-0x000000000044C000-memory.dmp

      Filesize

      304KB

    • memory/4480-47-0x0000000000400000-0x0000000000429000-memory.dmp

      Filesize

      164KB