vjw0rm | e27a1c2e9575ba9b96d09ba2e8d784d933aff564dffecd214dc6da94be0b974e

Analysis

max time kernel
141s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240730-en
resource tags

arch:x64arch:x86image:win10v2004-20240730-enlocale:en-usos:windows10-2004-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

Processes:

wscript.exe

flow pid process

2 2116 wscript.exe
17 2116 wscript.exe
31 2116 wscript.exe
36 2116 wscript.exe
42 2116 wscript.exe
44 2116 wscript.exe
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

wscript.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-807826884-2440573969-3755798217-1000\Control Panel\International\Geo\Nation wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-807826884-2440573969-3755798217-1000\Control Panel\International\Geo\Nation	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\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

Processes:

wscript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-807826884-2440573969-3755798217-1000\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.
persistence execution

Scheduled Task
T1053.005

Processes:

schtasks.exe

pid process

2804 schtasks.exe

pid	process
2804	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 2116 wrote to memory of 2804	2116	wscript.exe	schtasks.exe
PID 2116 wrote to memory of 2804	2116	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\7f9a9040806cc846490809f2c2fe749e_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2116
- 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:2804