Analysis

  • max time kernel
    92s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-09-2022 03:09

General

  • Target

    66e2924598475f91962b91d29feba8b83317dbaedac3ed1e077d79e4cac25ddf.exe

  • Size

    170KB

  • MD5

    72d3478bd0c0f31ff0ca19bb096130a8

  • SHA1

    d86416279916cba2716e90264c082f9da2240c36

  • SHA256

    66e2924598475f91962b91d29feba8b83317dbaedac3ed1e077d79e4cac25ddf

  • SHA512

    566527ab20ce004fd397764b642683ed77fa3fabedd32e2e0d58ae0e6b4c530310152b6ffb1b265b2f8d5de3eb51c7cff6bffdf5bfbe2a045f0e0617bcaa5ee9

  • SSDEEP

    3072:SyPevd8s7ZeqSBlnb/YlSFc6yum7c3tw+T++Elaqurlc14lYdrKe439pdp:SSs7klBpb/tRyuVdwhl/urC1GY4L9bp

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 2 TTPs 8 IoCs
  • Executes dropped EXE 2 IoCs
  • UPX packed file 8 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 2 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). Likely ransomware behaviour.

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

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:2940
      • C:\Users\Admin\AppData\Local\Temp\66e2924598475f91962b91d29feba8b83317dbaedac3ed1e077d79e4cac25ddf.exe
        "C:\Users\Admin\AppData\Local\Temp\66e2924598475f91962b91d29feba8b83317dbaedac3ed1e077d79e4cac25ddf.exe"
        2⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4744
        • C:\Users\Admin\AppData\Local\Temp\66e2924598475f91962b91d29feba8b83317dbaedac3ed1e077d79e4cac25ddf.exe
          "C:\Users\Admin\AppData\Local\Temp\66e2924598475f91962b91d29feba8b83317dbaedac3ed1e077d79e4cac25ddf.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:3772
          • C:\Windows\SysWOW64\wmpkv32.exe
            "C:\Windows\SysWOW64\wmpkv32.exe" C:\Users\Admin\AppData\Local\Temp\66E292~1.EXE
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:2440
            • C:\Windows\SysWOW64\wmpkv32.exe
              "C:\Windows\SysWOW64\wmpkv32.exe" C:\Users\Admin\AppData\Local\Temp\66E292~1.EXE
              5⤵
              • Modifies firewall policy service
              • 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:4760

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Windows\SysWOW64\wmpkv32.exe

      Filesize

      170KB

      MD5

      72d3478bd0c0f31ff0ca19bb096130a8

      SHA1

      d86416279916cba2716e90264c082f9da2240c36

      SHA256

      66e2924598475f91962b91d29feba8b83317dbaedac3ed1e077d79e4cac25ddf

      SHA512

      566527ab20ce004fd397764b642683ed77fa3fabedd32e2e0d58ae0e6b4c530310152b6ffb1b265b2f8d5de3eb51c7cff6bffdf5bfbe2a045f0e0617bcaa5ee9

    • C:\Windows\SysWOW64\wmpkv32.exe

      Filesize

      170KB

      MD5

      72d3478bd0c0f31ff0ca19bb096130a8

      SHA1

      d86416279916cba2716e90264c082f9da2240c36

      SHA256

      66e2924598475f91962b91d29feba8b83317dbaedac3ed1e077d79e4cac25ddf

      SHA512

      566527ab20ce004fd397764b642683ed77fa3fabedd32e2e0d58ae0e6b4c530310152b6ffb1b265b2f8d5de3eb51c7cff6bffdf5bfbe2a045f0e0617bcaa5ee9

    • C:\Windows\SysWOW64\wmpkv32.exe

      Filesize

      170KB

      MD5

      72d3478bd0c0f31ff0ca19bb096130a8

      SHA1

      d86416279916cba2716e90264c082f9da2240c36

      SHA256

      66e2924598475f91962b91d29feba8b83317dbaedac3ed1e077d79e4cac25ddf

      SHA512

      566527ab20ce004fd397764b642683ed77fa3fabedd32e2e0d58ae0e6b4c530310152b6ffb1b265b2f8d5de3eb51c7cff6bffdf5bfbe2a045f0e0617bcaa5ee9

    • memory/2440-139-0x0000000000000000-mapping.dmp

    • memory/3772-136-0x0000000000400000-0x0000000000451000-memory.dmp

      Filesize

      324KB

    • memory/3772-138-0x0000000000400000-0x0000000000451000-memory.dmp

      Filesize

      324KB

    • memory/3772-137-0x0000000000400000-0x0000000000451000-memory.dmp

      Filesize

      324KB

    • memory/3772-133-0x0000000000400000-0x0000000000451000-memory.dmp

      Filesize

      324KB

    • memory/3772-135-0x0000000000400000-0x0000000000451000-memory.dmp

      Filesize

      324KB

    • memory/3772-132-0x0000000000000000-mapping.dmp

    • memory/3772-148-0x0000000000400000-0x0000000000451000-memory.dmp

      Filesize

      324KB

    • memory/4760-142-0x0000000000000000-mapping.dmp

    • memory/4760-149-0x0000000000400000-0x0000000000451000-memory.dmp

      Filesize

      324KB

    • memory/4760-150-0x0000000000400000-0x0000000000451000-memory.dmp

      Filesize

      324KB