Overview

overview

10

Static

static

suBZaIZZSy...ver.js

windows7-x64

10

suBZaIZZSy...ver.js

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/11/2022, 10:12

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General

  • Target
    suBZaIZZSy_ayomover.js
  • Size 41KB
  • Sample221111-l8hvvsed75
  • SHA256 f4c467d745b4920e074209e95814ef511c3a239fb7296dc6ea36cd4a4875a743
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
vjw0rmwshratpersistencetrojanworm

Malware Config

Extracted

Family

  • wshrat

C2

  • http://45.139.105.174:7670

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

    trojanwormvjw0rm
  • WSHRAT

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

    trojanwshrat
  • Blocklisted process makes network request 42 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 5 IoCs
  • Adds Run key to start application 2 TTPs 8 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 30 IoCs

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

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\suBZaIZZSy_ayomover.js
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1688
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\YeVbRXLYad.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:2248
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\suBZaIZZSy_ayomover.js"
      2⤵
      • Blocklisted process makes network request
      • Checks computer location settings
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2996
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\YeVbRXLYad.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        PID:5024

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        YeVbRXLYad.js
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\YeVbRXLYad.js
        • Size 6KB
        • SHA256 3fac74db0db43eec4faf06e594d5c49d98a9222a5739c2c64bb5249cc85bd4d0
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        suBZaIZZSy_ayomover.js
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\suBZaIZZSy_ayomover.js
        • Size 41KB
        • SHA256 f4c467d745b4920e074209e95814ef511c3a239fb7296dc6ea36cd4a4875a743
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        YeVbRXLYad.js
        • Path C:\Users\Admin\AppData\Roaming\YeVbRXLYad.js
        • Size 6KB
        • SHA256 3fac74db0db43eec4faf06e594d5c49d98a9222a5739c2c64bb5249cc85bd4d0
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        YeVbRXLYad.js
        • Path C:\Users\Admin\AppData\Roaming\YeVbRXLYad.js
        • Size 6KB
        • SHA256 3fac74db0db43eec4faf06e594d5c49d98a9222a5739c2c64bb5249cc85bd4d0
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        suBZaIZZSy_ayomover.js
        • Path C:\Users\Admin\AppData\Roaming\suBZaIZZSy_ayomover.js
        • Size 41KB
        • SHA256 f4c467d745b4920e074209e95814ef511c3a239fb7296dc6ea36cd4a4875a743
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download