Overview

overview

10

Static

static

Payment pdf.js

windows7_x64

10

Payment pdf.js

windows10_x64

10

Analysis

  • max time kernel
    145s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    27/07/2021, 09:46

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General

  • Target
    Payment pdf.js
  • Size 1014KB
  • Sample210727-dhrlrkvde2
  • SHA256 f59e56f5a8735cf57b82bd6a6c76e352edae68f40e19efd1a03cd5fe15b06d4e
  • MD5 SHA1 SHA512
Score
10/10
wshratpersistencesuricatatrojan

Malware Config

Signatures

  • WSHRAT

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

    trojanwshrat
  • suricata: ET MALWARE WSHRAT CnC Checkin
    suricata
  • suricata: ET MALWARE Worm.VBS Dunihi/Houdini/H-Worm Checkin 1
    suricata
  • Blocklisted process makes network request 27 IoCs
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
    persistence
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 26 IoCs

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

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\Payment pdf.js"
    1⤵
    • Blocklisted process makes network request
    • Drops startup file
    • Adds Run key to start application
    PID:652

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads