vjw0rm | 2d0241f0ed9b0a8e902b6e402e33c7a5dfaea0f9e9105e11a62a83d9e289f9fa

Analysis

max time kernel
146s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
16-02-2023 14:01

Target

receipt-0213023pdf.js
Size

3KB
MD5

c64bdd0d2ddf04507b70b6062d48c1c5
SHA1

cedaba613aefca83c103b8f50399dfa9a6a3981c
SHA256

2d0241f0ed9b0a8e902b6e402e33c7a5dfaea0f9e9105e11a62a83d9e289f9fa
SHA512

1896c80066e8fa44faf10456f98181a99f2c8c52059e5afa4d607363e75b27a9be7ddda12854cca33a700e4baf4ea809c0dda4f1865ba6d109e534dcf395ab33

Score

10^/10

Family

vjw0rm

http://66.154.102.135:9401

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Blocklisted process makes network request 1 IoCs

Processes:

wscript.exe

flow pid process

4 4160 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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation wscript.exe

flow	pid	process
4	4160	wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\receipt-0213023pdf.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\receipt-0213023pdf.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

Registry Run Keys / Startup Folder

Modify Registry

Processes:

wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4YORQEQAUX = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\receipt-0213023pdf.js\""	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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
T1053

Processes:

schtasks.exe

pid process

4404 schtasks.exe

pid	process
4404	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 4160 wrote to memory of 4404	4160	wscript.exe	schtasks.exe
PID 4160 wrote to memory of 4404	4160	wscript.exe	schtasks.exe

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\receipt-0213023pdf.js
2⤵
- Creates scheduled task(s)
PID:4404