vjw0rm | 999b0576efee65a6c79f2fdc6e6f0d3aca3965d9e3f6193d88d452a5f507fc4e

Analysis

max time kernel
141s
max time network
149s
platform
windows7_x64
resource
win7v20201028
submitted
05-04-2021 15:18

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Inv_#9045.js
Size

3KB
MD5

bd2ef974ff2ac7645c9c1249c6f09c67
SHA1

2f91d738794f8dc4e18e61d2ebd138e9cee26118
SHA256

999b0576efee65a6c79f2fdc6e6f0d3aca3965d9e3f6193d88d452a5f507fc4e
SHA512

65d7b23e6b0d99c73b6a0b8588c15c84ecfd3a5e2aa6e6cbeb4e2204479881b9587cc5dd84d097a1a4a95182fc83c0e41ab4683bab1783af6528e78eb7946303

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

6 2008 wscript.exe

flow	pid	process
6	2008	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\Inv_#9045.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Inv_#9045.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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\FPLYPOCV1W = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Inv_#9045.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

1080 schtasks.exe

pid	process
1080	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 2008 wrote to memory of 1080	2008	wscript.exe	schtasks.exe
PID 2008 wrote to memory of 1080	2008	wscript.exe	schtasks.exe
PID 2008 wrote to memory of 1080	2008	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Inv_#9045.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2008

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\Inv_#9045.js
2⤵
- Creates scheduled task(s)
PID:1080

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/1080-2-0x0000000000000000-mapping.dmp

Download
memory/1652-3-0x000007FEF7B20000-0x000007FEF7D9A000-memory.dmp

Filesize
2.5MB

Download