Malware Analysis Report

2024-11-13 15:41

Sample ID 230319-w6m2xahf34
Target fb50b5a527b81faf53eb766fc69645e2.bin
SHA256 3b9fae6a1caacb7977270b87fd48dbc0f5c0034472c8bf7eb749fd9182028648
Tags
vjw0rm persistence trojan worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3b9fae6a1caacb7977270b87fd48dbc0f5c0034472c8bf7eb749fd9182028648

Threat Level: Known bad

The file fb50b5a527b81faf53eb766fc69645e2.bin was found to be: Known bad.

Malicious Activity Summary

vjw0rm persistence trojan worm

Vjw0rm

Blocklisted process makes network request

Checks computer location settings

Drops startup file

Adds Run key to start application

Enumerates physical storage devices

Creates scheduled task(s)

Uses Task Scheduler COM API

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-03-19 18:32

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-19 18:32

Reported

2023-03-19 18:34

Platform

win7-20230220-en

Max time kernel

137s

Max time network

151s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js

Signatures

Vjw0rm

trojan worm vjw0rm

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\system32\wscript.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js C:\Windows\system32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js C:\Windows\system32\wscript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\system32\wscript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows\CurrentVersion\Run\NNS4R1BA4A = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js\"" C:\Windows\system32\wscript.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1204 wrote to memory of 1364 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 1204 wrote to memory of 1364 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 1204 wrote to memory of 1364 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js

Network

Country Destination Domain Proto
US 8.8.8.8:53 ourvjworm.duckdns.org udp
TR 194.55.224.80:7974 ourvjworm.duckdns.org tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-03-19 18:32

Reported

2023-03-19 18:34

Platform

win10v2004-20230220-en

Max time kernel

146s

Max time network

149s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js

Signatures

Vjw0rm

trojan worm vjw0rm

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\system32\wscript.exe N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Control Panel\International\Geo\Nation C:\Windows\system32\wscript.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js C:\Windows\system32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js C:\Windows\system32\wscript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\system32\wscript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-4238149048-355649189-894321705-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NNS4R1BA4A = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js\"" C:\Windows\system32\wscript.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1148 wrote to memory of 1256 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 1148 wrote to memory of 1256 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af.js

Network

Country Destination Domain Proto
US 8.8.8.8:53 ourvjworm.duckdns.org udp
TR 194.55.224.80:7974 ourvjworm.duckdns.org tcp
US 8.8.8.8:53 80.224.55.194.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 199.176.139.52.in-addr.arpa udp
US 8.8.8.8:53 76.38.195.152.in-addr.arpa udp
US 20.42.65.90:443 tcp
US 52.152.110.14:443 tcp
US 8.247.210.254:80 tcp
NL 173.223.113.164:443 tcp
US 52.152.110.14:443 tcp
US 8.247.210.254:80 tcp
IE 52.109.77.0:443 tcp
NL 173.223.113.131:80 tcp
US 131.253.33.203:80 tcp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp
US 52.152.110.14:443 tcp
US 8.8.8.8:53 202.74.101.95.in-addr.arpa udp
US 52.152.110.14:443 tcp

Files

N/A