vjw0rm | 66037239aa96e722f20864b8a140576e3c592cafe2d9a6067b3ff349ea851792

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2024 04:28

Target

#WPNMD903WEBNSM.js
Size

13KB
MD5

76afb4e74dd9305a478e9a436086c393
SHA1

fd233c3e245894c8ea473a394b4363a0616f423b
SHA256

cbf943d583ce8bf8229df4072ed28f1598c1212b45f3bc3a2132e17a72957f02
SHA512

6189972dc375bbccb80e2770492b8ca04320430bd2087a5716d40725d991a9d6a4095a6f9fee5edd9aaf6490195aa9cb66fcb411b54b2fe40bb5ea9274e5b0b7
SSDEEP

384:v4Np85FCpanpunSDi5WMsdoujUpoo5SU2Vc65Xvvt6h:QNW/2s8j5W/5sooE3VH5Xvvt6h

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Vjw0rm family
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-1-5-21-4089630652-1596403869-279772308-1000\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\#WPNMD903WEBNSM.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#WPNMD903WEBNSM.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\6APWATPSUN = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\#WPNMD903WEBNSM.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
1744	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3852 wrote to memory of 1744	3852	wscript.exe	83
PID 3852 wrote to memory of 1744	3852	wscript.exe	83

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\#WPNMD903WEBNSM.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:3852
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\#WPNMD903WEBNSM.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1744