General
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Target
https://github.com/kh4sh3i/Ransomware-Samples
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Sample
230417-27zpzsab5w
Score
10/10
Malware Config
Targets
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Target
https://github.com/kh4sh3i/Ransomware-Samples
Score10/10-
Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
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Downloads MZ/PE file
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Modifies Installed Components in the registry
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Modifies extensions of user files
Ransomware generally changes the extension on encrypted files.
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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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Loads dropped DLL
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Modifies system executable filetype association
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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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Registers COM server for autorun
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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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Legitimate hosting services abused for malware hosting/C2
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Drops file in System32 directory
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