General
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Target
Runtime Broker.exe
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Size
41KB
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Sample
250103-s64swa1nbt
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MD5
3d8c8bdb3f9f8e2176e28bef2c32a872
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SHA1
c94ee52f063a8bcb37878a4a35f01e649a82d452
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SHA256
56abf6e0538aa01c4d703d318d6ab9d9f1d82a56e8327fa051af57c209270721
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SHA512
8ade0497a2f0d203c564fd90f7a370dc5c4c4bc6b2ec32d33da3d57897f4409b2857883aa3bb6c21276960035d07079422aaaf72987b9cce0e10efad77759138
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SSDEEP
768:zgBqG/D6Ykg+h5NMhllLW4pF5PM9lErl6TOwhp3tQj8:S3/D6A+hnErTFy9Wx6TOwPc8
Malware Config
Extracted
xworm
5.0
89uVkC69u7sBIP4Y
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Install_directory
%Temp%
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install_file
update.exe
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pastebin_url
https://pastebin.com/raw/EPNvLhJF
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telegram
https://api.telegram.org/bot7343382434:AAHVbjA3UMvHkIXFmk_EqanDZDs1lJukPtw/sendMessage?chat_id=1867331552
Extracted
gurcu
https://api.telegram.org/bot7343382434:AAHVbjA3UMvHkIXFmk_EqanDZDs1lJukPtw/sendMessage?chat_id=1867331552
Targets
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Target
Runtime Broker.exe
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Size
41KB
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MD5
3d8c8bdb3f9f8e2176e28bef2c32a872
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SHA1
c94ee52f063a8bcb37878a4a35f01e649a82d452
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SHA256
56abf6e0538aa01c4d703d318d6ab9d9f1d82a56e8327fa051af57c209270721
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SHA512
8ade0497a2f0d203c564fd90f7a370dc5c4c4bc6b2ec32d33da3d57897f4409b2857883aa3bb6c21276960035d07079422aaaf72987b9cce0e10efad77759138
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SSDEEP
768:zgBqG/D6Ykg+h5NMhllLW4pF5PM9lErl6TOwhp3tQj8:S3/D6A+hnErTFy9Wx6TOwPc8
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Detect Xworm Payload
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Gurcu family
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Xworm family
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Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Adds Run key to start application
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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1