vjw0rm | 9b5c6c579c2dcff5c35cc16f59c49bd0d903edb8730e1f4f5424d33fdc19a677

Analysis

max time kernel
146s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
15-04-2024 16:53

Target

f187bff85111c74bffe04e7148760bca_JaffaCakes118.js
Size

3KB
MD5

f187bff85111c74bffe04e7148760bca
SHA1

e0436fb2079b01df779d28a29d3b52b4e5bae191
SHA256

9b5c6c579c2dcff5c35cc16f59c49bd0d903edb8730e1f4f5424d33fdc19a677
SHA512

bd548dc2a01c74181e365bb56e5b3346838bb29da2000479b93560b3966fa37549b77e25c64d6dfb9d081c82bca9690432ca656e1117dd4b9514bf7607efac49

Score

10^/10

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

Blocklisted process makes network request 6 IoCs

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f187bff85111c74bffe04e7148760bca_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f187bff85111c74bffe04e7148760bca_JaffaCakes118.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-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows\CurrentVersion\Run\QVCLNW3IY6 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\f187bff85111c74bffe04e7148760bca_JaffaCakes118.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
2856	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2856	2220	wscript.exe	29
PID 2220 wrote to memory of 2856	2220	wscript.exe	29
PID 2220 wrote to memory of 2856	2220	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\f187bff85111c74bffe04e7148760bca_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\f187bff85111c74bffe04e7148760bca_JaffaCakes118.js
  2⤵
  - Creates scheduled task(s)
  PID:2856