vjw0rm | 6ecf7599637e51186edb088b0b39b592676a6c61c5917ee5c58a64b2ffed0be7

Analysis

max time kernel
136s
max time network
135s
platform
windows7_x64
resource
win7-en-20210920
submitted
05-10-2021 14:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

YUEOPInvoiceCopy.js
Size

12KB
MD5

13cbbf285a8353dea38b24e1e1472c29
SHA1

d5f98537c95a00a6fbb9db349a1567fc2ac74cb9
SHA256

6ecf7599637e51186edb088b0b39b592676a6c61c5917ee5c58a64b2ffed0be7
SHA512

41ccc979a7dc9f9bd444ec3c66b5979f9b02945238d5670f1c6bac4fac1a11153327ed025e5c7046cfd72ec5b0466d0a806bf9eeb20b7966102babea1774e621

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

5 2036 wscript.exe

flow	pid	process
5	2036	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\YUEOPInvoiceCopy.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\YUEOPInvoiceCopy.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-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\AAHTJLXP64 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\YUEOPInvoiceCopy.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

1668 schtasks.exe

pid	process
1668	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 2036 wrote to memory of 1668	2036	wscript.exe	schtasks.exe
PID 2036 wrote to memory of 1668	2036	wscript.exe	schtasks.exe
PID 2036 wrote to memory of 1668	2036	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\YUEOPInvoiceCopy.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2036

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\YUEOPInvoiceCopy.js
2⤵
- Creates scheduled task(s)
PID:1668

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/1668-54-0x0000000000000000-mapping.dmp

Download