vjw0rm | 73484c34ca7516e9da574b6abc0226184d600eb4fdfd84114819b182fa355a1d

Analysis

max time kernel
143s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-09-2024 21:10

Target

f09ea4cb206a6520f888d9d380bcc1fa_JaffaCakes118.js
Size

4KB
MD5

f09ea4cb206a6520f888d9d380bcc1fa
SHA1

5dd7210ef96999e0eb9e10e6ed473b7d5a5aa41b
SHA256

73484c34ca7516e9da574b6abc0226184d600eb4fdfd84114819b182fa355a1d
SHA512

a35dbdaba49a2740708cb5a1490778411d62c52e38e4cffdd5055ad1dd02638fbcd373fca8ea649f1f81aa841fe9ae0cbc90bd6159ea4ffba20826cd7e81a410
SSDEEP

96:9Y4OfJwKCl/LEmSpJdus7Pe9p4G9rNIN63NIDuL563YuwH0EcNUiA/YIhNC2MY3f:9YbfJi/LyxjDe9PQNvuNvuwRcTYNJMYP

Score

10^/10

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm 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\f09ea4cb206a6520f888d9d380bcc1fa_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\f09ea4cb206a6520f888d9d380bcc1fa_JaffaCakes118.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\WRKX0O3JEM = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\f09ea4cb206a6520f888d9d380bcc1fa_JaffaCakes118.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
2132	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2132	2120	wscript.exe	32
PID 2120 wrote to memory of 2132	2120	wscript.exe	32
PID 2120 wrote to memory of 2132	2120	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\f09ea4cb206a6520f888d9d380bcc1fa_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\f09ea4cb206a6520f888d9d380bcc1fa_JaffaCakes118.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2132