vjw0rm | 5518f5e20b27a4b10ebc7abce37c733ab532354b5db6aed7edf19c25caba2ff3

Analysis

max time kernel
144s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
30-03-2024 15:20

Target

3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js
Size

12KB
MD5

3e7dd715a15046585cb8034a1fa847b3
SHA1

4cbe1b633a7859821c0b7082385407cb140a0ba5
SHA256

5518f5e20b27a4b10ebc7abce37c733ab532354b5db6aed7edf19c25caba2ff3
SHA512

42777bf0328fe9844aa93e8394f11aba8d02d6bbc77980da2c22bb5b9f9a646763ed4506976dfbf3d2476ca63fbc0845bb5be64c3a6c745daffdd7f7d85f960a
SSDEEP

384:Y7z4C7+owFhl3rwUY5mn33QPHOS2A9P2N:Y7zV+ow5qk3AOSx9q

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Blocklisted process makes network request 6 IoCs

Processes:

wscript.exe

flow pid process

4 1712 wscript.exe
8 1712 wscript.exe
9 1712 wscript.exe
11 1712 wscript.exe
12 1712 wscript.exe
13 1712 wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js	wscript.exe

Adds Run key to start application 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

Processes:

wscript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Run\6ID7YY2BDP = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.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.
persistence

Scheduled Task/Job
T1053

Processes:

schtasks.exe

pid process

2632 schtasks.exe

pid	process
2632	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1712 wrote to memory of 2632	1712	wscript.exe	schtasks.exe
PID 1712 wrote to memory of 2632	1712	wscript.exe	schtasks.exe
PID 1712 wrote to memory of 2632	1712	wscript.exe	schtasks.exe

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\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\3e7dd715a15046585cb8034a1fa847b3_JaffaCakes118.js
  2⤵
  - Creates scheduled task(s)
  PID:2632