Malware Analysis Report

2024-11-15 08:04

Sample ID 230311-z959fabc99
Target e40c02fde9cd71faef1d2c1f3f4cebbf8a98fbd5f219e8c5e04bd780684dfe29
SHA256 e40c02fde9cd71faef1d2c1f3f4cebbf8a98fbd5f219e8c5e04bd780684dfe29
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

e40c02fde9cd71faef1d2c1f3f4cebbf8a98fbd5f219e8c5e04bd780684dfe29

Threat Level: Known bad

The file e40c02fde9cd71faef1d2c1f3f4cebbf8a98fbd5f219e8c5e04bd780684dfe29 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

Uses Task Scheduler COM API

Creates scheduled task(s)

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-03-11 21:26

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2023-03-11 21:26

Reported

2023-03-11 21:31

Platform

win7-20230220-en

Max time kernel

27s

Max time network

31s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\32_94_payment_bv_xls.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\32_94_payment_bv_xls.js C:\Windows\system32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\32_94_payment_bv_xls.js C:\Windows\system32\wscript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\system32\wscript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run\FTQMIP0ARG = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\32_94_payment_bv_xls.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 2004 wrote to memory of 848 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 2004 wrote to memory of 848 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 2004 wrote to memory of 848 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\32_94_payment_bv_xls.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\32_94_payment_bv_xls.js

Network

Country Destination Domain Proto
US 8.8.8.8:53 js9300.duckdns.org udp
EE 91.193.75.174:9300 js9300.duckdns.org tcp

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-03-11 21:26

Reported

2023-03-11 21:33

Platform

win10v2004-20230220-en

Max time kernel

145s

Max time network

152s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\32_94_payment_bv_xls.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-1-5-21-1013461898-3711306144-4198452673-1000\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\32_94_payment_bv_xls.js C:\Windows\system32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\32_94_payment_bv_xls.js C:\Windows\system32\wscript.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\Software\Microsoft\Windows\CurrentVersion\Run C:\Windows\system32\wscript.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1013461898-3711306144-4198452673-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\FTQMIP0ARG = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\32_94_payment_bv_xls.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 1636 wrote to memory of 1136 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\schtasks.exe
PID 1636 wrote to memory of 1136 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\32_94_payment_bv_xls.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\32_94_payment_bv_xls.js

Network

Country Destination Domain Proto
US 209.197.3.8:80 tcp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 210.81.184.52.in-addr.arpa udp
US 8.8.8.8:53 142.145.190.20.in-addr.arpa udp
US 8.8.8.8:53 js9300.duckdns.org udp
EE 91.193.75.174:9300 js9300.duckdns.org tcp
US 8.8.8.8:53 174.75.193.91.in-addr.arpa udp
US 8.8.8.8:53 123.108.74.40.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 199.176.139.52.in-addr.arpa udp
US 8.8.8.8:53 113.238.32.23.in-addr.arpa udp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
US 8.8.8.8:53 86.8.109.52.in-addr.arpa udp
US 8.8.8.8:53 154.25.221.88.in-addr.arpa udp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp

Files

N/A