Analysis

  • max time kernel
    37s
  • max time network
    144s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    09/10/2021, 19:18

General

  • Target

    uspstracker.js

  • Size

    1.1MB

  • MD5

    3151f194fcfe3b210732d3f6bed59cbd

  • SHA1

    84d181e892c2c51d29c70daa7f785aa4b9a256bd

  • SHA256

    878057fe16a4f4bcdf4e3cf5e28c5e5686da8f24ebb03ced117b34a3f76571aa

  • SHA512

    0264ab652876cf84616e713e9e7709679e16a43a9d4d8b2624dc0dfe417eb21925a12f07ef2beff8e712570dc9e5a3777aaf221267abe8e977dde7eb64ac7024

Malware Config

Signatures

  • WSHRAT

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

  • Blocklisted process makes network request 2 IoCs
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 8 IoCs
  • 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 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\uspstracker.js
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1252
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\uspstracker.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:1688
  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:3368

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/3368-122-0x0000026EF9BF0000-0x0000026EF9BF1000-memory.dmp

    Filesize

    4KB

  • memory/3368-124-0x0000026EE0F80000-0x0000026EE0F82000-memory.dmp

    Filesize

    8KB

  • memory/3368-119-0x0000026EE0F80000-0x0000026EE0F82000-memory.dmp

    Filesize

    8KB

  • memory/3368-120-0x0000026EE0F80000-0x0000026EE0F82000-memory.dmp

    Filesize

    8KB

  • memory/3368-121-0x0000026EE0F80000-0x0000026EE0F82000-memory.dmp

    Filesize

    8KB

  • memory/3368-117-0x0000026EE0F80000-0x0000026EE0F82000-memory.dmp

    Filesize

    8KB

  • memory/3368-123-0x0000026EE0F80000-0x0000026EE0F82000-memory.dmp

    Filesize

    8KB

  • memory/3368-118-0x0000026EE0F80000-0x0000026EE0F82000-memory.dmp

    Filesize

    8KB

  • memory/3368-125-0x0000026EE0F80000-0x0000026EE0F82000-memory.dmp

    Filesize

    8KB

  • memory/3368-139-0x0000026EF9D80000-0x0000026EF9D81000-memory.dmp

    Filesize

    4KB

  • memory/3368-140-0x0000026EE0F90000-0x0000026EE0F92000-memory.dmp

    Filesize

    8KB

  • memory/3368-142-0x0000026EE0F93000-0x0000026EE0F95000-memory.dmp

    Filesize

    8KB

  • memory/3368-152-0x0000026EFA330000-0x0000026EFA331000-memory.dmp

    Filesize

    4KB

  • memory/3368-157-0x0000026EE0F80000-0x0000026EE0F82000-memory.dmp

    Filesize

    8KB

  • memory/3368-158-0x0000026EE0F80000-0x0000026EE0F82000-memory.dmp

    Filesize

    8KB

  • memory/3368-159-0x0000026EE0F80000-0x0000026EE0F82000-memory.dmp

    Filesize

    8KB