Overview

overview

10

Static

static

CREDIT NOTE.js

windows7-x64

10

CREDIT NOTE.js

windows10-2004-x64

10

Analysis

  • max time kernel
    146s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/09/2022, 09:56

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General

  • Target
    CREDIT NOTE.js
  • Size 47KB
  • Sample220929-lycabsbdgl
  • SHA256 fdf962b11ebd15e592510bee4a3c10a4c8d50756c6961e05e58935d41e5935ea
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
vjw0rmwshratpersistencetrojanworm

Malware Config

Extracted

Family

  • wshrat

C2

  • http://snkcyp.duckdns.org:44147

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 38 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 25 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\CREDIT NOTE.js"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4816
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\wxvWHxoEoQ.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:4232
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\CREDIT NOTE.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:1804
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\wxvWHxoEoQ.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        PID:980

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        CREDIT NOTE.js
        • Path C:\Users\Admin\AppData\Roaming\CREDIT NOTE.js
        • Size 47KB
        • SHA256 fdf962b11ebd15e592510bee4a3c10a4c8d50756c6961e05e58935d41e5935ea
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        CREDIT NOTE.js
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\CREDIT NOTE.js
        • Size 47KB
        • SHA256 fdf962b11ebd15e592510bee4a3c10a4c8d50756c6961e05e58935d41e5935ea
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        wxvWHxoEoQ.js
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wxvWHxoEoQ.js
        • Size 8KB
        • SHA256 7d9912a92d8e2437acf46a7ad81a2add963a6e8a9e9b5478173cb00866ad694a
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        wxvWHxoEoQ.js
        • Path C:\Users\Admin\AppData\Roaming\wxvWHxoEoQ.js
        • Size 8KB
        • SHA256 7d9912a92d8e2437acf46a7ad81a2add963a6e8a9e9b5478173cb00866ad694a
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download

        wxvWHxoEoQ.js
        • Path C:\Users\Admin\AppData\Roaming\wxvWHxoEoQ.js
        • Size 8KB
        • SHA256 7d9912a92d8e2437acf46a7ad81a2add963a6e8a9e9b5478173cb00866ad694a
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download