vjw0rm | 203cd83c288970b9caabec63d2bc421abcd42ef62658b5f47b72997d9033565f

Analysis

max time kernel
140s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23-04-2024 05:02

Target

Remittance slip.js
Size

23KB
MD5

b43b26e225000fb00800a9146e0e8fd8
SHA1

bee1172d3b121eb67cac1fb1f3ce37d7efa10d55
SHA256

203cd83c288970b9caabec63d2bc421abcd42ef62658b5f47b72997d9033565f
SHA512

82b253ff647b91d9ee3ffcbf5f3c3e14ceafbb04dc53479d8f2a40c420734efb93c6067a8705489936fefd3a6462ebd45be5b47416aa1782950f8043574b0a65
SSDEEP

384:TR50lxft160hWVE6pqRXkRwhuzieIgJkCnkvqiFmCaVCmmaJ7dyXQntXCfmM56:TRSxV1MEhRXkR7ieIChnkiBljmaJ78XC

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 15 IoCs

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Remittance slip.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Remittance slip.js	wscript.exe

Adds Run key to start application 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\5TJJF2Z3XN = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Remittance slip.js\""	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

Scheduled Task/Job

pid	Process
3780	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 748 wrote to memory of 3780	748	wscript.exe	89
PID 748 wrote to memory of 3780	748	wscript.exe	89

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Remittance slip.js"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:748
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\Remittance slip.js
  2⤵
  - Creates scheduled task(s)
  PID:3780