vjw0rm | 9c93430d461f06f4193e4130261545c936dbf23a41654005672b099772e10efb

Analysis

max time kernel
149s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10-04-2024 22:07

Target

ec187870c12d12639f5c90d00e7c5b8e_JaffaCakes118.js
Size

11KB
MD5

ec187870c12d12639f5c90d00e7c5b8e
SHA1

949e87f2d785e32e944f1a992eb1814256393f98
SHA256

9c93430d461f06f4193e4130261545c936dbf23a41654005672b099772e10efb
SHA512

e133f423bf6320e884629d3ecbbd866e097b882ae474933e1cd47264a389d3bdced7c1d8687716671bdc323712da956938d6db71f774a90d083530266698939a
SSDEEP

192:eA4X6rkfDrGK93aZAsZkAewnpjKX2KLpYlLDVbKv+gR3uTRw2qwWT5m7u5QZ7H:ef68DrGA3HRAj9QGgR++1kcI

Score

10^/10

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

Blocklisted process makes network request 15 IoCs

Processes:

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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\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\ec187870c12d12639f5c90d00e7c5b8e_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ec187870c12d12639f5c90d00e7c5b8e_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-1-5-21-566096764-1992588923-1249862864-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VXBM5F7PI1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ec187870c12d12639f5c90d00e7c5b8e_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

4788 schtasks.exe

pid	process
4788	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 2604 wrote to memory of 4788	2604	wscript.exe	schtasks.exe
PID 2604 wrote to memory of 4788	2604	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

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ec187870c12d12639f5c90d00e7c5b8e_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:2604
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\ec187870c12d12639f5c90d00e7c5b8e_JaffaCakes118.js
  2⤵
  - Creates scheduled task(s)
  PID:4788