Malware Analysis Report

2025-04-13 23:04

Sample ID 250324-exaxjswyd1
Target RobloxPlayerInstaller-B22GWFHWX3.exe
SHA256 eef18c81faeee1877aa9cd8d8aef18b643a434fd3da221cc724070ec863e5fcd
Tags
xenorat discovery rat trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

eef18c81faeee1877aa9cd8d8aef18b643a434fd3da221cc724070ec863e5fcd

Threat Level: Known bad

The file RobloxPlayerInstaller-B22GWFHWX3.exe was found to be: Known bad.

Malicious Activity Summary

xenorat discovery rat trojan

Detect XenoRat Payload

Xenorat family

XenorRat

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Modifies registry class

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-03-24 04:18

Signatures

Detect XenoRat Payload

Description Indicator Process Target
N/A N/A N/A N/A

Xenorat family

xenorat

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-03-24 04:18

Reported

2025-03-24 04:21

Platform

win11-20250313-en

Max time kernel

140s

Max time network

144s

Command Line

"C:\Users\Admin\AppData\Local\Temp\RobloxPlayerInstaller-B22GWFHWX3.exe"

Signatures

Detect XenoRat Payload

Description Indicator Process Target
N/A N/A N/A N/A

XenorRat

trojan rat xenorat

Xenorat family

xenorat

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\Panther\UnattendGC\setuperr.log C:\Windows\System32\oobe\UserOOBEBroker.exe N/A
File opened for modification C:\Windows\Panther\UnattendGC\diagerr.xml C:\Windows\System32\oobe\UserOOBEBroker.exe N/A
File opened for modification C:\Windows\Panther\UnattendGC\diagwrn.xml C:\Windows\System32\oobe\UserOOBEBroker.exe N/A
File opened for modification C:\Windows\Panther\UnattendGC\setupact.log C:\Windows\System32\oobe\UserOOBEBroker.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\RobloxPlayerInstaller-B22GWFHWX3.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1136229799-3442283115-138161576-1000_Classes\Local Settings\MuiCache C:\Windows\system32\BackgroundTransferHost.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1136229799-3442283115-138161576-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Content\CachePrefix C:\Windows\system32\BackgroundTransferHost.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1136229799-3442283115-138161576-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:" C:\Windows\system32\BackgroundTransferHost.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1136229799-3442283115-138161576-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\History\CachePrefix = "Visited:" C:\Windows\system32\BackgroundTransferHost.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\RobloxPlayerInstaller-B22GWFHWX3.exe

"C:\Users\Admin\AppData\Local\Temp\RobloxPlayerInstaller-B22GWFHWX3.exe"

C:\Windows\system32\svchost.exe

C:\Windows\system32\svchost.exe -k LocalService -p -s NPSMSvc

C:\Windows\system32\BackgroundTransferHost.exe

"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.13

C:\Windows\System32\oobe\UserOOBEBroker.exe

C:\Windows\System32\oobe\UserOOBEBroker.exe -Embedding

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe

C:\Users\Admin\AppData\Local\Microsoft\OneDrive\18.151.0729.0013\FileCoAuth.exe -Embedding

Network

Country Destination Domain Proto
N/A 127.0.0.1:4444 tcp
GB 104.86.110.90:443 tcp
N/A 127.0.0.1:4444 tcp
US 104.208.16.91:443 browser.pipe.aria.microsoft.com tcp
GB 95.100.153.157:443 www.bing.com tcp
N/A 127.0.0.1:4444 tcp
N/A 127.0.0.1:4444 tcp
N/A 127.0.0.1:4444 tcp
GB 95.100.153.143:443 www.bing.com tcp
GB 23.206.79.163:443 cxcs.microsoft.net tcp
N/A 127.0.0.1:4444 tcp
N/A 127.0.0.1:4444 tcp
GB 142.250.180.3:80 c.pki.goog tcp
N/A 127.0.0.1:4444 tcp
N/A 127.0.0.1:4444 tcp
N/A 127.0.0.1:4444 tcp
N/A 127.0.0.1:4444 tcp
N/A 127.0.0.1:4444 tcp

Files

memory/2904-0-0x000000007492E000-0x000000007492F000-memory.dmp

memory/2904-1-0x0000000000DF0000-0x0000000000E02000-memory.dmp

memory/2904-2-0x0000000074920000-0x00000000750D1000-memory.dmp

memory/2904-3-0x000000007492E000-0x000000007492F000-memory.dmp

memory/2904-4-0x0000000074920000-0x00000000750D1000-memory.dmp

C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\BackgroundTransferApi\54c341a2-2566-4649-8d27-f2616f035cfc.down_data

MD5 5683c0028832cae4ef93ca39c8ac5029
SHA1 248755e4e1db552e0b6f8651b04ca6d1b31a86fb
SHA256 855abd360d8a8d6974eba92b70cbd09ce519bc8773439993f9ab37cb6847309e
SHA512 aba434bd29be191c823b02ea9b639beb10647bbe7759bbffdaa790dfb1ec2c58d74c525ef11aacda209e4effe322d1d3a07b115446c8914b07a3bce4d8a0e2c3