Malware Analysis Report

2024-11-13 15:41

Sample ID 230316-hy3whabh6s
Target 89287af70d4358830a78439797416ae6.bin
SHA256 f917b74ebec6e00124f08982005430d724c3032847ec38f86e65951aacd59d4d
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

f917b74ebec6e00124f08982005430d724c3032847ec38f86e65951aacd59d4d

Threat Level: Known bad

The file 89287af70d4358830a78439797416ae6.bin was found to be: Known bad.

Malicious Activity Summary

vjw0rm persistence trojan worm

Vjw0rm

Blocklisted process makes network request

Drops startup file

Checks computer location settings

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

2023-03-16 07:09

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-16 07:09

Reported

2023-03-16 07:12

Platform

win7-20230220-en

Max time kernel

149s

Max time network

151s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.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\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.js C:\Windows\system32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.js C:\Windows\system32\wscript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\system32\wscript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000\Software\Microsoft\Windows\CurrentVersion\Run\XT2T5P7628 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.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 2024 wrote to memory of 580 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 2024 wrote to memory of 580 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 2024 wrote to memory of 580 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\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.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\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.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

2023-03-16 07:09

Reported

2023-03-16 07:12

Platform

win10v2004-20230220-en

Max time kernel

141s

Max time network

151s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.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-1-5-21-144354903-2550862337-1367551827-1000\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\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.js C:\Windows\system32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.js C:\Windows\system32\wscript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\system32\wscript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XT2T5P7628 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.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 2548 wrote to memory of 3052 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 2548 wrote to memory of 3052 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\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.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\52534bdae8aa5b9ba4636d4ba0d9ff60d61e1dc3d1984056ab9968d1c97b3b9c.js

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.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 8.8.8.8:53 80.224.55.194.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 76.38.195.152.in-addr.arpa udp
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 177.238.32.23.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 20.189.173.4:443 tcp
US 8.8.8.8:53 63.13.109.52.in-addr.arpa udp
US 209.197.3.8:80 tcp

Files

N/A