Analysis

  • max time kernel
    153s
  • max time network
    160s
  • platform
    windows10_x64
  • resource
    win10-en
  • submitted
    06/09/2021, 22:06

General

  • Target

    7002991002.js

  • Size

    5.0MB

  • MD5

    a20a192f6475f69d11a5517e9542becf

  • SHA1

    d21e1fc4f817ec7410d70a88403dd6e7d4f654f8

  • SHA256

    2a0356a320b8202a66e35e71cd8aa503953d8ddea284c0da06ae6f2571ec3ff5

  • SHA512

    76df370a5d38d580f120f1eaa4ea1ce64b8a80f70fd6c06db9bf78165ab0b068adb04e3bb0c0fb23231575bcf1386fada6bea21f5eb182361ec7496b8f06af78

Malware Config

Signatures

  • HawkEye

    HawkEye is a malware kit that has seen continuous development since at least 2013.

  • WSHRAT

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

  • NirSoft MailPassView 7 IoCs

    Password recovery tool for various email clients

  • NirSoft WebBrowserPassView 7 IoCs

    Password recovery tool for various web browsers

  • Nirsoft 10 IoCs
  • Blocklisted process makes network request 26 IoCs
  • Executes dropped EXE 2 IoCs
  • Drops startup file 2 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Adds Run key to start application 2 TTPs 5 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Script User-Agent 24 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\7002991002.js
    1⤵
    • Blocklisted process makes network request
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:3908
    • C:\Users\Admin\AppData\Local\Temp\whhost.exe
      "C:\Users\Admin\AppData\Local\Temp\whhost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3856
      • C:\Users\Admin\AppData\Roaming\Windows Update.exe
        "C:\Users\Admin\AppData\Roaming\Windows Update.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Modifies system certificate store
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3840
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
          C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
          4⤵
            PID:4128
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
            C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            PID:4184

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3840-122-0x0000000002240000-0x0000000002241000-memory.dmp

      Filesize

      4KB

    • memory/3840-124-0x0000000002241000-0x0000000002242000-memory.dmp

      Filesize

      4KB

    • memory/3840-127-0x0000000002244000-0x0000000002246000-memory.dmp

      Filesize

      8KB

    • memory/3856-118-0x0000000002FC0000-0x0000000002FC1000-memory.dmp

      Filesize

      4KB

    • memory/4128-125-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4128-128-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4184-129-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB

    • memory/4184-131-0x0000000000400000-0x0000000000458000-memory.dmp

      Filesize

      352KB