vjw0rm | e27a1c2e9575ba9b96d09ba2e8d784d933aff564dffecd214dc6da94be0b974e

Analysis

max time kernel
141s
max time network
147s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
01-08-2024 07:10

Target

7f9a9040806cc846490809f2c2fe749e_JaffaCakes118.js
Size

60KB
MD5

7f9a9040806cc846490809f2c2fe749e
SHA1

22ff082eb71e71911c88a981f15b28ce618cfc3b
SHA256

e27a1c2e9575ba9b96d09ba2e8d784d933aff564dffecd214dc6da94be0b974e
SHA512

72db7271c8cfed8fd3a675e4603a02ed4a00dd8a7590285279e4b5ac18ae06675a053003a12ccf1a30c3f441f3485b681153068fa5e41a266204079c99151a05
SSDEEP

192:W7jehcd5fDAoK080FF9A9kgT9LOdbnDftvZAlhD783:ECA

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\7f9a9040806cc846490809f2c2fe749e_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7f9a9040806cc846490809f2c2fe749e_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-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows\CurrentVersion\Run\RM5LER31W1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\7f9a9040806cc846490809f2c2fe749e_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
2916	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2880 wrote to memory of 2916	2880	wscript.exe	31
PID 2880 wrote to memory of 2916	2880	wscript.exe	31
PID 2880 wrote to memory of 2916	2880	wscript.exe	31

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\7f9a9040806cc846490809f2c2fe749e_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2880
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\7f9a9040806cc846490809f2c2fe749e_JaffaCakes118.js
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2916