vjw0rm | 1ba42d29173823024db0d23191d5c3ba4dfded187241f9d8b9e8f4e9c818e1f7

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-en-20211208
submitted
23-01-2022 17:31

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

A0JGH70KMSD.js
Size

13KB
MD5

d251c9b68de33df4b470397130ff9594
SHA1

d8efc507c2bfdbe66352401ab47146505fb66c60
SHA256

1ba42d29173823024db0d23191d5c3ba4dfded187241f9d8b9e8f4e9c818e1f7
SHA512

079bb77fdf0ad72c07d1c1af19f6e49386c4b91503f0b4b838654edff3ba2d996539d61b0eb50893073d9570140fee99a9319b7ab7fa2f6a7721669052f4f392

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Signatures

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

5 744 wscript.exe
6 744 wscript.exe
7 744 wscript.exe
9 744 wscript.exe
10 744 wscript.exe
11 744 wscript.exe

flow	pid	process
5	744	wscript.exe
6	744	wscript.exe
7	744	wscript.exe
9	744	wscript.exe
10	744	wscript.exe
11	744	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\A0JGH70KMSD.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\A0JGH70KMSD.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\X06WO88LM3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\A0JGH70KMSD.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

668 schtasks.exe

pid	process
668	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 744 wrote to memory of 668	744	wscript.exe	schtasks.exe
PID 744 wrote to memory of 668	744	wscript.exe	schtasks.exe
PID 744 wrote to memory of 668	744	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\A0JGH70KMSD.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:744

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\A0JGH70KMSD.js
2⤵
- Creates scheduled task(s)
PID:668

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/744-55-0x000007FEFBEB1000-0x000007FEFBEB3000-memory.dmp

Filesize
8KB

Download