Analysis

  • max time kernel
    41s
  • max time network
    107s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-10-2022 00:38

General

  • Target

    a/J.class

  • Size

    358B

  • MD5

    fcb3ee8a38a5c46d50c0e93c66a2be33

  • SHA1

    d2cfbc0682adb7459508c2002882b1e90e2316f8

  • SHA256

    3d0850ca70e2b232793106f986d3c2c2fe09fb858eaccebdc18d35c4ce039da6

  • SHA512

    76e34184aceb9a920aacc389fe444192dac12956efd1ebbcfbc7a785f2cd0fc61022a339281058ecf508308188bf65fa99731a5a6ad56a11b710bd6946f73d12

Score
3/10

Malware Config

Signatures

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\a\J.class
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1436
    • C:\Windows\system32\rundll32.exe
      "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\a\J.class
      2⤵
        PID:800
        • C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
          "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\a\J.class"
          3⤵
            PID:1360

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1360-82-0x0000000076DC1000-0x0000000076DC3000-memory.dmp

        Filesize

        8KB

      • memory/1436-54-0x000007FEFC481000-0x000007FEFC483000-memory.dmp

        Filesize

        8KB