vjw0rm | 24965c8f04697a180e542d601f1d7a4f2d8efed7848d322ddc0d62fbf29c3a59

Analysis

max time kernel
160s
max time network
175s
platform
windows10_x64
resource
win10-en-20211208
submitted
08-12-2021 15:43

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General

Target

#UOO991.js
Size

9KB
MD5

5513419842fc60ab5cfa771672575ad3
SHA1

32f8cfa4af614c3eb38898ed33cdb3d2e403ae3e
SHA256

24965c8f04697a180e542d601f1d7a4f2d8efed7848d322ddc0d62fbf29c3a59
SHA512

46bb3191e3d790c31ee5ef1dd00e3e877b58afc6e5f0706d135f0a70941595d66b56fc73489fa7e336795541c7484da4cb03289fe317cc323e5b4b1fa3a91bce

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://warmmoney.duckdns.org:7907

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

8 2700 wscript.exe

flow	pid	process
8	2700	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\#UOO991.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#UOO991.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-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run\SQTBH2A8FH = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\#UOO991.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

4036 schtasks.exe

pid	process
4036	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 2700 wrote to memory of 4036	2700	wscript.exe	schtasks.exe
PID 2700 wrote to memory of 4036	2700	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\#UOO991.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2700

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\#UOO991.js
2⤵
- Creates scheduled task(s)
PID:4036

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/4036-118-0x0000000000000000-mapping.dmp

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