vjw0rm | a5d5de41b6546981f2284c07aa2fe17ac0b15727fb96fdff33db020a0826810e

Analysis

max time kernel
143s
max time network
158s
platform
windows10_x64
resource
win10-en-20210920
submitted
23-10-2021 05:41

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General

Target

H00G4_Invoice_Copy.js
Size

10KB
MD5

b082682e872f7c1ba8efeebf629a4f3f
SHA1

aa013d976095c46964405e95ce022224c0a033ae
SHA256

a5d5de41b6546981f2284c07aa2fe17ac0b15727fb96fdff33db020a0826810e
SHA512

4329c35805fbfac63d683ec1ef69c039bde4fbe8d1951b8b79cf84cbf296556ee5d9e58e6ce77f81fd39cc05eec993775d015b760e77e9fe39d65767c2bb01a9

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://gg1592661.duckdns.org:7924

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

9 764 wscript.exe

flow	pid	process
9	764	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\H00G4_Invoice_Copy.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\H00G4_Invoice_Copy.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-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\F4ZGVI2L3S = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\H00G4_Invoice_Copy.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

4392 schtasks.exe

pid	process
4392	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 764 wrote to memory of 4392	764	wscript.exe	schtasks.exe
PID 764 wrote to memory of 4392	764	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\H00G4_Invoice_Copy.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:764

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\H00G4_Invoice_Copy.js
2⤵
- Creates scheduled task(s)
PID:4392

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

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Downloads

memory/4392-115-0x0000000000000000-mapping.dmp

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