Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-en-20210920
  • submitted
    19/10/2021, 08:27

General

  • Target

    CPVN - PO 1910450087085-03 - C.P Việt Nam - CPV-01.js

  • Size

    45KB

  • MD5

    8c7d90878061ce94f70b41a3d2678379

  • SHA1

    7d08d5be9c64a49ccfeeb14aee806cb017d941db

  • SHA256

    d52a0835e1845e89e134b1701d39b4f1fe4091814d9c1746f2f722599328dd13

  • SHA512

    e510040078a0dc4b305abaf1a6d33d44f871f77f91c90c721c810fbb629b3c633e44654193bebd9b4bf537b9d124696432f808bdfbc60daf7c49e206eadb0792

Malware Config

Extracted

Family

wshrat

C2

http://faxjohn01.dyn.ddnss.de:1251

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • WSHRAT

    WSHRAT is a variant of Houdini worm and has vbs and js variants.

  • suricata: ET MALWARE WSHRAT CnC Checkin

    suricata: ET MALWARE WSHRAT CnC Checkin

  • suricata: ET MALWARE Worm.VBS Dunihi/Houdini/H-Worm Checkin 1

    suricata: ET MALWARE Worm.VBS Dunihi/Houdini/H-Worm Checkin 1

  • Blocklisted process makes network request 64 IoCs
  • Drops startup file 5 IoCs
  • Adds Run key to start application 2 TTPs 12 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 29 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\CPVN - PO 1910450087085-03 - C.P Việt Nam - CPV-01.js"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1768
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\fSHKTxYIwQ.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:524
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\CPVN - PO 1910450087085-03 - C.P Việt Nam - CPV-01.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:528
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\fSHKTxYIwQ.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        • Adds Run key to start application
        PID:880

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1768-53-0x000007FEFBE61000-0x000007FEFBE63000-memory.dmp

    Filesize

    8KB