Analysis

  • max time kernel
    121s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    08/02/2022, 17:30

General

  • Target

    b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe

  • Size

    3.0MB

  • MD5

    18d677163ec5b5be2f78051cd465f13f

  • SHA1

    a9ece82cb71de649fec043b19567b07258d3a8bf

  • SHA256

    b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5

  • SHA512

    6c6b9bba0782e57dc799f1fedc8f2f0b4a5117701348fa5f94fd32820b963dc03cef8bb161dd012336c13468be9d73010f8d9ebd10ad72814b7b7f75d9ff58bb

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe
    "C:\Users\Admin\AppData\Local\Temp\b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Windows\system32\cmd.exe
      "C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\2F3B.tmp\2F3C.bat C:\Users\Admin\AppData\Local\Temp\b8e1c2faba54c996024d3d9695e0b9e8547dd65b7a0f4c16d1f69a0c5596a1b5.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1744
      • C:\Users\Admin\AppData\Local\Temp\2F3B.tmp\3.exe
        3.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious behavior: CmdExeWriteProcessMemorySpam
        PID:332

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/1620-53-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

          Filesize

          8KB