vjw0rm | 655334e78aaaedd288a25a2820e93dc43ca0c770848c74e3bab9ff7da2ca0de1

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23/12/2024, 23:03

Target

7165342_Payment_Receipt.js
Size

81KB
MD5

63920a31085c5e1f40f50b7df48b54f8
SHA1

92955db054abbdd957121479784a552ffd03d857
SHA256

76fc2fbb5f59ddd971dcdb93f11cefb22fc954305b5c99e36f5d42381cb33168
SHA512

6f687653cc20a5d4a4c716f1f2ba9f7bf1a2687e19a972a6537efdf0eee695185c34bcb9f3f32dc3c4f22fb964076dd0de46f2e961aee14c8591b174ddf637fd
SSDEEP

192:/jTKDrSsWruBc3N19eLi1ow9yQ9y9JkLE6+61Wsz+fr+5inP7TvsC+U6OEsO+ghu:rTvPvvmVVR/4K/KtI

Score

10^/10

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

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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7165342_Payment_Receipt.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7165342_Payment_Receipt.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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CTMJWPB2UR = "'C:\\Users\\Admin\\AppData\\Local\\Temp\\7165342_Payment_Receipt.js'"	wscript.exe

Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

Scheduled Task

pid	Process
4556	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4340 wrote to memory of 4556	4340	wscript.exe	85
PID 4340 wrote to memory of 4556	4340	wscript.exe	85

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\7165342_Payment_Receipt.js
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4340
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr 'C:\Users\Admin\AppData\Local\Temp\7165342_Payment_Receipt.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4556