vjw0rm | a4ef0bc3f82a7a6537974caa2a3c8cbcc1611aca0c80303591bcd401f05b3a2f

Analysis

max time kernel
134s
max time network
137s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
01-09-2023 14:04

Target

DOC290823-29082023144405.js
Size

24KB
MD5

4bd43de1ae996231fc4bdad4e31acc18
SHA1

40867d1931e30eea677eceb397e29bece3bbc348
SHA256

a4ef0bc3f82a7a6537974caa2a3c8cbcc1611aca0c80303591bcd401f05b3a2f
SHA512

d49612cc30985c7453ee7366514cd501ad7b4ae27c24e71def2fee63f276779ff6cb02b24d4165ee6ba3e9c2ba8f1dcfc3e79a1fb47f85608996c7b2c0e8fca6
SSDEEP

768:xjbJzKjG920H6q7DLW4pewkrEHIYz9E3HgR:BNeG9T6qzHqrEoYhigR

Score

10^/10

Family

vjw0rm

http://severdops.ddns.net:5050

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
4	3040	wscript.exe
6	3040	wscript.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DOC290823-29082023144405.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-1-5-21-3750544865-3773649541-1858556521-1000\Software\Microsoft\Windows\CurrentVersion\Run\2RJZ4PQJPY = "\"C:\\Users\\Admin\\AppData\\Roaming\\DOC290823-29082023144405.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
2676	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2676	3040	wscript.exe	29
PID 3040 wrote to memory of 2676	3040	wscript.exe	29
PID 3040 wrote to memory of 2676	3040	wscript.exe	29

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\DOC290823-29082023144405.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\DOC290823-29082023144405.js
  2⤵
  - Creates scheduled task(s)
  PID:2676