General
- Target 2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry
- Size 238KB
- Sample240803-ewn3sashrn
- SHA256 4e758d011d1d615ebd05c6ffe441dedf5d371efb1dca1c624ec896f56de19979
Score
10/10
Malware Config
Targets
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- Target 2024-08-02_86faf18098e56c8c610b960d684a21d8_wannacry
- Size 238KB
- SHA256 4e758d011d1d615ebd05c6ffe441dedf5d371efb1dca1c624ec896f56de19979
Score10/10-
Chaos
Ransomware family first seen in June 2021.
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Chaos Ransomware
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Deletes shadow copies
Ransomware often targets backup files to inhibit system recovery.
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Modifies boot configuration data using bcdedit
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Renames multiple (194) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Deletes backup catalog
Uses wbadmin.exe to inhibit system recovery.
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Disables Task Manager via registry modification
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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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Executes dropped EXE
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Reads user/profile data of web browsers
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application
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Drops desktop.ini file(s)
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Sets desktop wallpaper using registry
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Direct Volume Access
1Indicator Removal
3File Deletion
3Modify Registry
2