vjw0rm | a19ef31c04ece8ca7d410ffe2b9d717377bdaec7a8e5bdb50a3ab84e7a971ef5

Analysis

max time kernel
148s
max time network
143s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 04:29

Target

Bill.js
Size

3KB
MD5

5578addeaf9926e7aa9edd19eec66b4d
SHA1

279c6bbc6b837b4998d1ad05374f5baaab401177
SHA256

6ecdd18eb432df3f754e32c723ff684984e6a33fcfa7731723d9d99481b83d41
SHA512

6504472561cb14f399811fc780d37e26269ca5acad8404217b75c1a7d7994d3900f162bfb0a3efaaef677d136e518a638cdb3468c55959e375057799ba658be0

Score

10^/10

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

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Bill.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Bill.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-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\2NTN6XURFE = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Bill.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
2236	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1148 wrote to memory of 2236	1148	wscript.exe	29
PID 1148 wrote to memory of 2236	1148	wscript.exe	29
PID 1148 wrote to memory of 2236	1148	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\Bill.js
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1148
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\Bill.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2236