vjw0rm | 379de20da0d610a4dea8dbb72ccc779293df892dcf168ea6df0c9fc90464cd8e

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-x64system
submitted
31-07-2024 06:24

Target

Sign_Document.js
Size

21KB
MD5

224f4d8856ecad8593e84f8eba7566d0
SHA1

b85fd04987debeddb6658a3efc5c6ad0b3da7d28
SHA256

379de20da0d610a4dea8dbb72ccc779293df892dcf168ea6df0c9fc90464cd8e
SHA512

f256428505a516ba42d5194ba8ed56408b27487d21c424e5784124b4f17bb5330729aa7a56c921d87a0de3aeb388748ef6032bc607c2ea863ea77a0f24a605d7
SSDEEP

384:ZgkL5flYLJSXQC2GJLonbd0L8PTC6HciWeCbM4gmDbRfybb5BL+OSAagiTsNvtBj:Z75dYLJ2Q4o5bPTC6Hccb4rhf81diAa2

Score

10^/10

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

Blocklisted process makes network request 16 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-1-5-21-2077438316-259605770-1264560426-1000\Control Panel\International\Geo\Nation wscript.exe
Drops startup file 1 IoCs

Processes:

wscript.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Sign_Document.js wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2077438316-259605770-1264560426-1000\Control Panel\International\Geo\Nation	wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Sign_Document.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-1-5-21-2077438316-259605770-1264560426-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\B25YBOUAJJ = "\"C:\\Users\\Admin\\AppData\\Roaming\\Sign_Document.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.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

3172 schtasks.exe

pid	process
3172	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 2828 wrote to memory of 3172	2828	wscript.exe	schtasks.exe
PID 2828 wrote to memory of 3172	2828	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\Sign_Document.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:2828
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\Sign_Document.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3172