vjw0rm | a6074fe81acba4af7ff9a864fc65da056ae657f051330ebd1633d81b702c40cd

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26/02/2024, 22:02

Target

a6074fe81acba4af7ff9a864fc65da056ae657f051330ebd1633d81b702c40cd.js
Size

12KB
MD5

d3f3203a0eae82b2e715f253de902238
SHA1

04222a59b1033486041ee1b1866b1b84371d69c8
SHA256

a6074fe81acba4af7ff9a864fc65da056ae657f051330ebd1633d81b702c40cd
SHA512

ca14c9b9232d0fcefa84ed2b7b4ef6b7eb7e625f2548f1be1304346a1a7f44c0e747b78378bbc5882913322321d783e4ffcbe25b3ed6c11533e69b4a93b6bda8
SSDEEP

384:eiwHFGNuMsRTKPOON3RWMAdEuRQGlJ+R63T:eVsX4uxb8qGlJ+gj

Score

10^/10

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

Blocklisted process makes network request 6 IoCs

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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a6074fe81acba4af7ff9a864fc65da056ae657f051330ebd1633d81b702c40cd.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\a6074fe81acba4af7ff9a864fc65da056ae657f051330ebd1633d81b702c40cd.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-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\VXBM5F7PI1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\a6074fe81acba4af7ff9a864fc65da056ae657f051330ebd1633d81b702c40cd.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.

Scheduled Task/Job

pid	Process
1084	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3156 wrote to memory of 1084	3156	wscript.exe	86
PID 3156 wrote to memory of 1084	3156	wscript.exe	86

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\a6074fe81acba4af7ff9a864fc65da056ae657f051330ebd1633d81b702c40cd.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:3156
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\a6074fe81acba4af7ff9a864fc65da056ae657f051330ebd1633d81b702c40cd.js
  2⤵
  - Creates scheduled task(s)
  PID:1084