Overview

overview

10

Static

static

10

wynlog (1).js

windows7-x64

10

wynlog (1).js

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    28/10/2022, 09:29

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General

  • Target
    wynlog (1).js
  • Size 189KB
  • Sample221028-lfxhjsffdn
  • SHA256 726d793d69e118eedfdb88458f8dbd241dfb931ce3819058ee53527b8ee32b15
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
wshratpersistencetrojan

Malware Config

Extracted

Family

  • wshrat

C2

  • http://45.139.105.174:3670

Signatures

  • WSHRAT

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

    trojanwshrat
  • Blocklisted process makes network request 15 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 14 IoCs

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

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\wynlog (1).js"
    1⤵
    • Blocklisted process makes network request
    • Drops startup file
    • Adds Run key to start application
    PID:1812

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1812-54-0x000007FEFBFE1000-0x000007FEFBFE3000-memory.dmp
        Download