General
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Target
abd49fd6f57d4f0ffef794257692c61b2089ee412ae27fe36a9ffee41f9d5e14
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Size
1.1MB
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Sample
221110-jkrrrafhf6
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MD5
ad539ebdf9e34e02be487134cf9a6713
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SHA1
b5af8a12c5a6ed369debaad7eab59e3cb1715e2d
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SHA256
abd49fd6f57d4f0ffef794257692c61b2089ee412ae27fe36a9ffee41f9d5e14
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SHA512
386291d7dd9fa62f7514e784a238bd7a5099a0d2edd8af6085c61e3953a6914faf3dc299f07d56bed3b5b337a18c8b636c84f88693d3bc2512f8dfd51e711492
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SSDEEP
24576:g3BzKGHF0bxTCFvXwKt/aISpu4Qc6F3v1HT2BzN2tgGS3YzYhoHWxVGI8WIQbQ:KV4xTCwu4Qc6/F87gIwQ
Behavioral task
behavioral1
Sample
abd49fd6f57d4f0ffef794257692c61b2089ee412ae27fe36a9ffee41f9d5e14.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
abd49fd6f57d4f0ffef794257692c61b2089ee412ae27fe36a9ffee41f9d5e14.exe
Resource
win10v2004-20220812-en
Malware Config
Extracted
C:\ProgramData\Service\SURTR_README.hta
surtr
Targets
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Target
abd49fd6f57d4f0ffef794257692c61b2089ee412ae27fe36a9ffee41f9d5e14
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Size
1.1MB
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MD5
ad539ebdf9e34e02be487134cf9a6713
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SHA1
b5af8a12c5a6ed369debaad7eab59e3cb1715e2d
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SHA256
abd49fd6f57d4f0ffef794257692c61b2089ee412ae27fe36a9ffee41f9d5e14
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SHA512
386291d7dd9fa62f7514e784a238bd7a5099a0d2edd8af6085c61e3953a6914faf3dc299f07d56bed3b5b337a18c8b636c84f88693d3bc2512f8dfd51e711492
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SSDEEP
24576:g3BzKGHF0bxTCFvXwKt/aISpu4Qc6F3v1HT2BzN2tgGS3YzYhoHWxVGI8WIQbQ:KV4xTCwu4Qc6/F87gIwQ
Score10/10-
Deletes NTFS Change Journal
The USN change journal is a persistent log of all changes made to local files used by Windows Server systems.
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Detects Surtr Payload
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Modifies boot configuration data using bcdedit
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Disables Task Manager via registry modification
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Disables use of System Restore points
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Drops startup file
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Adds Run key to start application
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Drops desktop.ini file(s)
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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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 v6
Persistence
Hidden Files and Directories
1Registry Run Keys / Startup Folder
1Scheduled Task
1Defense Evasion
Bypass User Account Control
1Disabling Security Tools
1File Deletion
3Hidden Files and Directories
1Modify Registry
2