General
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Target
Sigmanly_bea5c2c91e1fa97854c65ece18456b0e
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Size
497KB
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Sample
250414-tv1shsskv2
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MD5
bea5c2c91e1fa97854c65ece18456b0e
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SHA1
2ed560ed6d90b42e79da906625a03e743f742369
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SHA256
8061bb999a0f5d3165742283001a7a68e7905718c928172343bf8456b69f268d
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SHA512
1f67af2e4960b469742bdf55e43d04c9b00a87f31e1272cc7c857275837b3aa7f665cb47ecfb88f99d1a35feddde5d0a96283936ff45cdddb60be3d8caea7a50
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SSDEEP
6144:LgVoyb9e9BhzGcIo6gCJv47raqMFdiksMi9agtuMf9opaiYOmDdnT:com47ciTt9agUG9oCOmD
Behavioral task
behavioral1
Sample
Sigmanly_bea5c2c91e1fa97854c65ece18456b0e.exe
Resource
win10v2004-20250410-en
Malware Config
Targets
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Target
Sigmanly_bea5c2c91e1fa97854c65ece18456b0e
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Size
497KB
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MD5
bea5c2c91e1fa97854c65ece18456b0e
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SHA1
2ed560ed6d90b42e79da906625a03e743f742369
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SHA256
8061bb999a0f5d3165742283001a7a68e7905718c928172343bf8456b69f268d
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SHA512
1f67af2e4960b469742bdf55e43d04c9b00a87f31e1272cc7c857275837b3aa7f665cb47ecfb88f99d1a35feddde5d0a96283936ff45cdddb60be3d8caea7a50
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SSDEEP
6144:LgVoyb9e9BhzGcIo6gCJv47raqMFdiksMi9agtuMf9opaiYOmDdnT:com47ciTt9agUG9oCOmD
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Detect Rhysida ransomware
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Rhysida family
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Clears Windows event logs
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (9590) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Credentials from Password Stores: Windows Credential Manager
Suspicious access to Credentials History.
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Drops startup file
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Hide Artifacts: Hidden Window
Windows that would typically be displayed when an application carries out an operation can be hidden.
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Indicator Removal: Clear Persistence
Clear artifacts associated with previously established persistence like scheduletasks on a host.
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Power Settings
powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.
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Sets desktop wallpaper using registry
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MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
1PowerShell
1Windows Management Instrumentation
1Defense Evasion
Direct Volume Access
1Hide Artifacts
1Hidden Window
1Indicator Removal
4Clear Persistence
1Clear Windows Event Logs
1File Deletion
2Modify Registry
1Credential Access
Credentials from Password Stores
2Credentials from Web Browsers
1Windows Credential Manager
1Unsecured Credentials
1Credentials In Files
1