Analysis

  • max time kernel
    118s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    10/10/2021, 02:48

General

  • Target
    de4419c0142a84761ed9abddcbc8bd76.exe
  • Size 351KB
  • Sample211010-dafnvafee4
  • SHA256 4e7a2d297395633bb98f5a8e2c51ed41bad9e7b8917eca00aa9b83517d16eb91
  • MD5 SHA1 SHA512
Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • VMProtect packed file 1 IoCs

    Detects executables packed with VMProtect commercial packer.

  • Deletes itself 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\de4419c0142a84761ed9abddcbc8bd76.exe
    "C:\Users\Admin\AppData\Local\Temp\de4419c0142a84761ed9abddcbc8bd76.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp3794.tmp.bat
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1272
      • C:\Windows\system32\chcp.com
        chcp 65001
        3⤵
          PID:1692
        • C:\Windows\system32\taskkill.exe
          TaskKill /F /IM 1620
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1144
        • C:\Windows\system32\timeout.exe
          Timeout /T 2 /Nobreak
          3⤵
          • Delays execution with timeout.exe
          PID:1604

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/1620-53-0x0000000000020000-0x0000000000021000-memory.dmp

          memory/1620-55-0x0000000002010000-0x000000000208D000-memory.dmp

          memory/1620-56-0x00000000005A0000-0x00000000005A1000-memory.dmp

          memory/1620-57-0x000000001AE20000-0x000000001AE22000-memory.dmp