vjw0rm | 6ce9729c02932add0dfe28370c67b23496e816d2f489129a89ad62701a36cbdb

Analysis

max time kernel
146s
max time network
147s
platform
windows10_x64
resource
win10v20201028
submitted
31-03-2021 15:11

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General

Target

ord#31803.js
Size

3KB
MD5

673bf2a0da4a18184005ef93615170ee
SHA1

9db0bb4b6b3aa88520b185afacd8ebc52a91af6c
SHA256

6ce9729c02932add0dfe28370c67b23496e816d2f489129a89ad62701a36cbdb
SHA512

5fcbaff7fb45dcbbb1995f2efa66164666885c93e893f73ac2ed82255d3121f1dd000067dbb49dd31c9c622db9b2c8440d5ded3c454bae00c06902fd8b1bdb10

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 1 IoCs

Processes:

wscript.exe

flow pid process

6 412 wscript.exe

flow	pid	process
6	412	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\ord#31803.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ord#31803.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-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\806VPWRO0L = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ord#31803.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

3184 schtasks.exe

pid	process
3184	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 412 wrote to memory of 3184	412	wscript.exe	schtasks.exe
PID 412 wrote to memory of 3184	412	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ord#31803.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:412

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\ord#31803.js
2⤵
- Creates scheduled task(s)
PID:3184

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

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Downloads

memory/3184-2-0x0000000000000000-mapping.dmp

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