vjw0rm | 9296cb6b37e1aa570675bcc07519b5887d20ec6617efa84d900286a8a829c994

Analysis

max time kernel
201s
max time network
208s
platform
windows7_x64
resource
win7-20220414-en
submitted
08-07-2022 21:28

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General

Target

Statement-Invoice.js
Size

10KB
MD5

c94c70544e1792362319f444ff1969ba
SHA1

0b8712b610744c9bf0cb469662f7823ed71e84b9
SHA256

9296cb6b37e1aa570675bcc07519b5887d20ec6617efa84d900286a8a829c994
SHA512

001eb00bf2851c8cda1bbf2ccb9a7d624378896d6a8cce02e99af4e0c7c2751d2cbc496c3c98d0f0535d1c0413e06c5a72b542f7d4b5e2f2c78b4ac5b04a1512

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://hwprocessing.duckdns.org:9933

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

4 2000 wscript.exe

flow	pid	process
4	2000	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\Statement-Invoice.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Statement-Invoice.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-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\8Z0TNMFXTR = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Statement-Invoice.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

1532 schtasks.exe

pid	process
1532	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 2000 wrote to memory of 1532	2000	wscript.exe	schtasks.exe
PID 2000 wrote to memory of 1532	2000	wscript.exe	schtasks.exe
PID 2000 wrote to memory of 1532	2000	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Statement-Invoice.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2000

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\Statement-Invoice.js
2⤵
- Creates scheduled task(s)
PID:1532

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/1532-55-0x0000000000000000-mapping.dmp

Download
memory/2000-54-0x000007FEFBB31000-0x000007FEFBB33000-memory.dmp

Filesize
8KB

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