vjw0rm | 6ecf7599637e51186edb088b0b39b592676a6c61c5917ee5c58a64b2ffed0be7

Analysis

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

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General

Target
YUEOPInvoiceCopy.js
Size 12KB
Sample211005-r376fsaaa4
SHA256 6ecf7599637e51186edb088b0b39b592676a6c61c5917ee5c58a64b2ffed0be7
MD5 13cbbf285a8353dea38b24e1e1472c29
SHA1 d5f98537c95a00a6fbb9db349a1567fc2ac74cb9
SHA512 41ccc979a7dc9f9bd444ec3c66b5979f9b02945238d5670f1c6bac4fac1a11153327ed025e5c7046cfd72ec5b0466d0a806bf9eeb20b7966102babea1774e621
MD5 SHA1 SHA512

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

flow	pid	Process
5	2036	wscript.exe

Drops startup file 2 IoCs

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

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

pid	Process
1668	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 1668	2036	wscript.exe	28
PID 2036 wrote to memory of 1668	2036	wscript.exe	28
PID 2036 wrote to memory of 1668	2036	wscript.exe	28

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 Enterprise 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

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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