vjw0rm | 203cd83c288970b9caabec63d2bc421abcd42ef62658b5f47b72997d9033565f

Analysis

max time kernel
144s
max time network
145s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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 17 IoCs

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-1-5-21-2297530677-1229052932-2803917579-1000\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
2600	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 2600	2340	wscript.exe	29
PID 2340 wrote to memory of 2600	2340	wscript.exe	29
PID 2340 wrote to memory of 2600	2340	wscript.exe	29

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
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2340
- 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:2600