Overview

overview

10

Static

static

_UE00S80.JS

windows7_x64

10

_UE00S80.JS

windows10_x64

10

Analysis

  • max time kernel
    120s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    05/11/2021, 15:24

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General

  • Target
    _UE00S80.JS
  • Size 13KB
  • Sample211105-sthd4scbc2
  • SHA256 8af76d1916ebc77d52162659733ff74656dfa8955fc0d60e92dc1fb9a86c29fa
  • MD5 SHA1 SHA512
Score
10/10
vjw0rmpersistencetrojanworm

Malware Config

Extracted

Family

  • vjw0rm

C2

  • http://194.156.90.26:8012

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

    trojanwormvjw0rm
  • Blocklisted process makes network request 1 IoCs
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistence
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    C:\Windows\System32\WScript.exe "C:\Users\Admin\AppData\Local\Temp\_UE00S80.JS"
    1⤵
    • Blocklisted process makes network request
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:560
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\_UE00S80.JS
      2⤵
      • Creates scheduled task(s)
      PID:436

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/560-55-0x000007FEFBF81000-0x000007FEFBF83000-memory.dmp
        Download