Analysis

  • max time kernel
    148s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-10-2023 22:17

General

  • Target

    Invoice.js

  • Size

    21KB

  • MD5

    12b2471d3c8dd16efd69ab5aca0678b9

  • SHA1

    15dca12d5e2d7d0281990ee43ffbcd22396fe01a

  • SHA256

    ae69570258cabd6bbede57ef510836d167c0d9b1752d3d742f8e4769e17eba15

  • SHA512

    7f72edfe2fa615279bfb18a6117afdac855ea6c37250b2473dad2f9ee6d701869123240f44d631020b4fb727869d00a697de5ed7c7bd59640594b57a4db787ac

  • SSDEEP

    384:6/+tc8v+YhrKZKZXeX5U7CP9fD0eX5GrnB63vQOaSDsvkysjqFJ8TatW8TaUxTam:6/+tbv+YhdZXeXic9fD0eXknB6Y6Dsv7

Malware Config

Extracted

Family

wshrat

C2

http://wishpeople.duckdns.org:9071

Signatures

  • WSHRAT

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

  • Blocklisted process makes network request 29 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 29 IoCs

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

  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\Invoice.js
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:224
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\Invoice.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:2484

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\Invoice.js

    Filesize

    21KB

    MD5

    12b2471d3c8dd16efd69ab5aca0678b9

    SHA1

    15dca12d5e2d7d0281990ee43ffbcd22396fe01a

    SHA256

    ae69570258cabd6bbede57ef510836d167c0d9b1752d3d742f8e4769e17eba15

    SHA512

    7f72edfe2fa615279bfb18a6117afdac855ea6c37250b2473dad2f9ee6d701869123240f44d631020b4fb727869d00a697de5ed7c7bd59640594b57a4db787ac

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

    Filesize

    21KB

    MD5

    12b2471d3c8dd16efd69ab5aca0678b9

    SHA1

    15dca12d5e2d7d0281990ee43ffbcd22396fe01a

    SHA256

    ae69570258cabd6bbede57ef510836d167c0d9b1752d3d742f8e4769e17eba15

    SHA512

    7f72edfe2fa615279bfb18a6117afdac855ea6c37250b2473dad2f9ee6d701869123240f44d631020b4fb727869d00a697de5ed7c7bd59640594b57a4db787ac

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

    Filesize

    21KB

    MD5

    12b2471d3c8dd16efd69ab5aca0678b9

    SHA1

    15dca12d5e2d7d0281990ee43ffbcd22396fe01a

    SHA256

    ae69570258cabd6bbede57ef510836d167c0d9b1752d3d742f8e4769e17eba15

    SHA512

    7f72edfe2fa615279bfb18a6117afdac855ea6c37250b2473dad2f9ee6d701869123240f44d631020b4fb727869d00a697de5ed7c7bd59640594b57a4db787ac