vjw0rm | d625b68606f5221ef6893109ebd3682ddef07dbdb120688fc1626305aeb1ff6a

Analysis

max time kernel
146s
max time network
147s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 20:07

Target

#UE00S802H.js
Size

13KB
MD5

8683ce7e2e7126ac6e0fc21e85a2ab19
SHA1

cdc1b5d86f240947f305ce8b3b63034250cb730c
SHA256

8af76d1916ebc77d52162659733ff74656dfa8955fc0d60e92dc1fb9a86c29fa
SHA512

5233f2f55356d00a776f2e067a0d5912ad99fc3016a7ff8cec4cf35ed3f3242251ed0d39dcc2d14928f32f22a0a00935049675a9e15488d9e8c627bd7b799530
SSDEEP

384:nwcWTi3WX/kepHiAGDuTnj/CXEiEZ6hfWcGHS6heo418S/BQx:ZWTTMepCOTjK0cRWVSfo4HA

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#UE00S802H.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#UE00S802H.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-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\MO5SWUOPWO = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\#UE00S802H.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
1712	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 388 wrote to memory of 1712	388	wscript.exe	32
PID 388 wrote to memory of 1712	388	wscript.exe	32
PID 388 wrote to memory of 1712	388	wscript.exe	32

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\#UE00S802H.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:388
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\#UE00S802H.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1712