vjw0rm | 483092b7a268b51243e99cdf55f71e30f16edd17fd21f913cabab75811642cf6

Analysis

max time kernel
143s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
24/07/2023, 01:56

Target
39372ec10b2720511f8ca94e8aed43273c507637ec03f9a1eac279aadeb22c55.js
Size 24KB
Sample230724-ccn8bsaa31
SHA256 39372ec10b2720511f8ca94e8aed43273c507637ec03f9a1eac279aadeb22c55
MD5 4272d76e2efed7d323e14bccef987913
SHA1 a8cde379b41cfafb036896484844620a7fcc11c6
SHA512 717ca100e5f2463b8aa675185e2dbd743a015fffe7654dab2b227691ed66e9443a3e387d31c3eeed63a22d1b3f77b213feec3c3fe6c1438ddf5313066f2583a9
SSDEEP 384:0B+UO8kwlbBtHS0ihYvG3bMZcCOQHp4aIX6xEzWZNxFlumanjjjIYNFLD5zvOJ:09ewl7tGr+Oy4aPOL13IoFLdzGJ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Family

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
30	752	wscript.exe

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-1-5-21-3011986978-2180659500-3669311805-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\39372ec10b2720511f8ca94e8aed43273c507637ec03f9a1eac279aadeb22c55.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3011986978-2180659500-3669311805-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\1CYH0WDT4T = "\"C:\\Users\\Admin\\AppData\\Roaming\\39372ec10b2720511f8ca94e8aed43273c507637ec03f9a1eac279aadeb22c55.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-3011986978-2180659500-3669311805-1000\Software\Microsoft\Windows\CurrentVersion\Run	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
1576	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 752 wrote to memory of 1576	752	wscript.exe	89
PID 752 wrote to memory of 1576	752	wscript.exe	89

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\39372ec10b2720511f8ca94e8aed43273c507637ec03f9a1eac279aadeb22c55.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:752
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\39372ec10b2720511f8ca94e8aed43273c507637ec03f9a1eac279aadeb22c55.js
  2⤵
  - Creates scheduled task(s)
  PID:1576