Analysis

  • max time kernel
    137s
  • max time network
    160s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    12-10-2023 07:17

General

  • Target

    invoice-wsl.js

  • Size

    187KB

  • MD5

    bc0356063536ebe0867a97a1965a0f52

  • SHA1

    f127953be621382ff50a37ebecef4d17bb3cd7d2

  • SHA256

    197e07455f8920039c0a30b9c95f847e02d29c9d7bd50488a350b53e747ba9c5

  • SHA512

    40f1d16054d103b4f9be044c9cb34f73fb042a62ea29e205f13a4f0b2565dbaa3e9d7954e9d288a748a125495891c2ed2f19104e5fc1353c745879e16ca02565

  • SSDEEP

    3072:2aeGK/6dbIpklgVDSxGfmuZRTFBTEsSQ0bamOZkvEzzbURC8:2aeGKgAklgF2GuuZ7auMTFRC8

Malware Config

Signatures

  • WSHRAT

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

  • WSHRAT payload 3 IoCs
  • Blocklisted process makes network request 7 IoCs
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 4 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\invoice-wsl.js
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1336
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\invoice-wsl.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:2768

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice-wsl.js

    Filesize

    187KB

    MD5

    daa16c30e9db3429ac96873ce0055c0c

    SHA1

    027b0f1eb4cda5beea629882f11f81646039e8f8

    SHA256

    723d45d50271f8b3e6036c307c9d438ab53e4fa8c20f6b6d5bae65dbd6e4e53f

    SHA512

    c562cde5c6554b7fc7e99b4abc28fa2b87f17202b9fb5b6ec7ceb020240e05b47aeef40c559226d53415c03a86b585a4ed6f3a6b994846f4812de8ae04491c58

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\invoice-wsl.js

    Filesize

    187KB

    MD5

    bc0356063536ebe0867a97a1965a0f52

    SHA1

    f127953be621382ff50a37ebecef4d17bb3cd7d2

    SHA256

    197e07455f8920039c0a30b9c95f847e02d29c9d7bd50488a350b53e747ba9c5

    SHA512

    40f1d16054d103b4f9be044c9cb34f73fb042a62ea29e205f13a4f0b2565dbaa3e9d7954e9d288a748a125495891c2ed2f19104e5fc1353c745879e16ca02565

  • C:\Users\Admin\AppData\Roaming\invoice-wsl.js

    Filesize

    187KB

    MD5

    bc0356063536ebe0867a97a1965a0f52

    SHA1

    f127953be621382ff50a37ebecef4d17bb3cd7d2

    SHA256

    197e07455f8920039c0a30b9c95f847e02d29c9d7bd50488a350b53e747ba9c5

    SHA512

    40f1d16054d103b4f9be044c9cb34f73fb042a62ea29e205f13a4f0b2565dbaa3e9d7954e9d288a748a125495891c2ed2f19104e5fc1353c745879e16ca02565