Malware Analysis Report

2024-11-13 15:41

Sample ID 230317-xkrzeabf2w
Target 1133543545.js
SHA256 786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af
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

786b63ecc1fb8174eb1301a5498ba858ccac1978cb745afde8c8cd22c7c962af

Threat Level: Known bad

The file 1133543545.js 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

Uses Task Scheduler COM API

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-03-17 18:55

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-17 18:55

Reported

2023-03-17 18:57

Platform

win7-20230220-en

Max time kernel

143s

Max time network

150s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\1133543545.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\1133543545.js C:\Windows\system32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1133543545.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\\1133543545.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 1956 wrote to memory of 1408 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 1956 wrote to memory of 1408 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 1956 wrote to memory of 1408 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\1133543545.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\1133543545.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

2023-03-17 18:55

Reported

2023-03-17 18:57

Platform

win10v2004-20230220-en

Max time kernel

148s

Max time network

152s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\1133543545.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-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation C:\Windows\system32\wscript.exe N/A

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1133543545.js C:\Windows\system32\wscript.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1133543545.js C:\Windows\system32\wscript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\system32\wscript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NNS4R1BA4A = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\1133543545.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 1592 wrote to memory of 1984 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 1592 wrote to memory of 1984 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\1133543545.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\1133543545.js

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 ourvjworm.duckdns.org udp
TR 194.55.224.80:7974 ourvjworm.duckdns.org tcp
US 93.184.220.29:80 tcp
US 8.8.8.8:53 80.224.55.194.in-addr.arpa udp
US 8.8.8.8:53 76.38.195.152.in-addr.arpa udp
US 8.8.8.8:53 210.81.184.52.in-addr.arpa udp
US 8.8.8.8:53 123.108.74.40.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 20.42.73.24:443 tcp
NL 173.223.113.164:443 tcp
NL 173.223.113.131:80 tcp
US 204.79.197.203:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
NL 88.221.25.155:80 tcp
US 8.8.8.8:53 86.8.109.52.in-addr.arpa udp
US 8.8.8.8:53 97.238.32.23.in-addr.arpa udp

Files

N/A