vjw0rm | 5518f5e20b27a4b10ebc7abce37c733ab532354b5db6aed7edf19c25caba2ff3

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
30-03-2024 15:20

Target

3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js
Size

12KB
MD5

3e7dd715a15046585cb8034a1fa847b3
SHA1

4cbe1b633a7859821c0b7082385407cb140a0ba5
SHA256

5518f5e20b27a4b10ebc7abce37c733ab532354b5db6aed7edf19c25caba2ff3
SHA512

42777bf0328fe9844aa93e8394f11aba8d02d6bbc77980da2c22bb5b9f9a646763ed4506976dfbf3d2476ca63fbc0845bb5be64c3a6c745daffdd7f7d85f960a
SSDEEP

384:Y7z4C7+owFhl3rwUY5mn33QPHOS2A9P2N:Y7zV+ow5qk3AOSx9q

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Blocklisted process makes network request 6 IoCs

Processes:

wscript.exe

flow pid process

11 60 wscript.exe
21 60 wscript.exe
35 60 wscript.exe
38 60 wscript.exe
45 60 wscript.exe
46 60 wscript.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js	wscript.exe

Adds Run key to start application 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

Processes:

wscript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\6ID7YY2BDP = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\3e7dd715a15046585cb8034a1fa847b3_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.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

212 schtasks.exe
Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description pid process target process

PID 60 wrote to memory of 212 60 wscript.exe schtasks.exe
PID 60 wrote to memory of 212 60 wscript.exe schtasks.exe
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

pid	process
212	schtasks.exe

description	pid	process	target process
PID 60 wrote to memory of 212	60	wscript.exe	schtasks.exe
PID 60 wrote to memory of 212	60	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.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:60
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js
  2⤵
  - Creates scheduled task(s)
  PID:212