Malware Analysis Report

2025-06-15 21:05

Sample ID 220825-m3d56abhcp
Target SZGefsAYXZ_Tadexax2223.js
SHA256 136916061bfeb5df05b83ba428bcd2005dccbce2035b2b28a029274bf95a25b4
Tags
vjw0rm 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

136916061bfeb5df05b83ba428bcd2005dccbce2035b2b28a029274bf95a25b4

Threat Level: Known bad

The file SZGefsAYXZ_Tadexax2223.js was found to be: Known bad.

Malicious Activity Summary

vjw0rm trojan worm

Vjw0rm

Blocklisted process makes network request

Drops startup file

Checks computer location settings

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2022-08-25 10:59

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2022-08-25 10:59

Reported

2022-08-25 11:01

Platform

win7-20220812-en

Max time kernel

144s

Max time network

155s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\SZGefsAYXZ_Tadexax2223.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 opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SZGefsAYXZ_Tadexax2223.js C:\Windows\system32\wscript.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SZGefsAYXZ_Tadexax2223.js C:\Windows\system32\wscript.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1656 wrote to memory of 1128 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 1656 wrote to memory of 1128 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 1656 wrote to memory of 1128 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\SZGefsAYXZ_Tadexax2223.js

C:\Windows\System32\wscript.exe

"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\DrKzuLzfJN.js"

Network

Country Destination Domain Proto
NL 185.157.162.75:2223 185.157.162.75 tcp

Files

memory/1656-54-0x000007FEFB941000-0x000007FEFB943000-memory.dmp

memory/1128-55-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\DrKzuLzfJN.js

MD5 6603a31cf804b8bfc789e62685a39291
SHA1 0d3918e67b92a5ced1a9ec8bc30d3103c53b1201
SHA256 a2d293790800a34a0b959815f28bc8cc8e1dea3729699936a710aed4fd8d0193
SHA512 77c5ff393d6e1485e3e41b4535f4fc58078f45f585f0b9ad515e0efa5b1796337ca40fe946aff5dd9c71cabd2442c69a828e237a039d10908192933f01f0854f

Analysis: behavioral2

Detonation Overview

Submitted

2022-08-25 10:59

Reported

2022-08-25 11:01

Platform

win10v2004-20220812-en

Max time kernel

144s

Max time network

150s

Command Line

wscript.exe C:\Users\Admin\AppData\Local\Temp\SZGefsAYXZ_Tadexax2223.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
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-1-5-21-2295526160-1155304984-640977766-1000\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\SZGefsAYXZ_Tadexax2223.js C:\Windows\system32\wscript.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SZGefsAYXZ_Tadexax2223.js C:\Windows\system32\wscript.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3756 wrote to memory of 1904 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe
PID 3756 wrote to memory of 1904 N/A C:\Windows\system32\wscript.exe C:\Windows\System32\wscript.exe

Processes

C:\Windows\system32\wscript.exe

wscript.exe C:\Users\Admin\AppData\Local\Temp\SZGefsAYXZ_Tadexax2223.js

C:\Windows\System32\wscript.exe

"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\DrKzuLzfJN.js"

Network

Country Destination Domain Proto
US 8.252.51.254:80 tcp
US 209.197.3.8:80 tcp
US 209.197.3.8:80 tcp
NL 185.157.162.75:2223 tcp
US 52.242.97.97:443 tcp
NL 185.157.162.75:2223 185.157.162.75 tcp
US 52.168.117.170:443 tcp
US 8.253.183.120:80 tcp
NL 104.80.225.205:443 tcp
NL 40.126.32.74:443 tcp
US 8.8.8.8:53 151.122.125.40.in-addr.arpa udp
US 209.197.3.8:80 tcp
NL 40.126.32.133:443 tcp
NL 20.190.160.17:443 tcp

Files

memory/1904-132-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Roaming\DrKzuLzfJN.js

MD5 6603a31cf804b8bfc789e62685a39291
SHA1 0d3918e67b92a5ced1a9ec8bc30d3103c53b1201
SHA256 a2d293790800a34a0b959815f28bc8cc8e1dea3729699936a710aed4fd8d0193
SHA512 77c5ff393d6e1485e3e41b4535f4fc58078f45f585f0b9ad515e0efa5b1796337ca40fe946aff5dd9c71cabd2442c69a828e237a039d10908192933f01f0854f