Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-11-2022 08:40

General

  • Target

    wynmove (1).js

  • Size

    24KB

  • MD5

    dc1bb14d9ae229088128fc7b820e0b37

  • SHA1

    6852c416ec186e6cdd3be3e4bc13a2ec94dc1b0b

  • SHA256

    03b7620c65c87c6db1bc76f63d8e88799bcd920b90e91f6bbbe8e4a899080270

  • SHA512

    5192f50e7b013d09742e4e515f910933b5e8aabd80313a689cd3b89e757da7a49cd6acf2e315d5ea68eb67f263ffe76a32bbce2458a9d031fa51a8d1febd171b

  • SSDEEP

    768:15nGPVNjCjZdGOO70IXgD2KTinmtalzDcVgg8a:1ZeKR

Malware Config

Extracted

Family

wshrat

C2

http://45.139.105.174:7670

Signatures

  • WSHRAT

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

  • Blocklisted process makes network request 30 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 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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\wynmove (1).js"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1352
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\wynmove (1).js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:3288

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wynmove (1).js

    Filesize

    24KB

    MD5

    dc1bb14d9ae229088128fc7b820e0b37

    SHA1

    6852c416ec186e6cdd3be3e4bc13a2ec94dc1b0b

    SHA256

    03b7620c65c87c6db1bc76f63d8e88799bcd920b90e91f6bbbe8e4a899080270

    SHA512

    5192f50e7b013d09742e4e515f910933b5e8aabd80313a689cd3b89e757da7a49cd6acf2e315d5ea68eb67f263ffe76a32bbce2458a9d031fa51a8d1febd171b

  • C:\Users\Admin\AppData\Roaming\wynmove (1).js

    Filesize

    24KB

    MD5

    dc1bb14d9ae229088128fc7b820e0b37

    SHA1

    6852c416ec186e6cdd3be3e4bc13a2ec94dc1b0b

    SHA256

    03b7620c65c87c6db1bc76f63d8e88799bcd920b90e91f6bbbe8e4a899080270

    SHA512

    5192f50e7b013d09742e4e515f910933b5e8aabd80313a689cd3b89e757da7a49cd6acf2e315d5ea68eb67f263ffe76a32bbce2458a9d031fa51a8d1febd171b