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General
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Target
2023-08-26_20a25829cbdbfebe400aaf23afae6bb8_ryuk_JC.exe
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Size
7.8MB
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Sample
231012-ccwbmshb8y
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MD5
20a25829cbdbfebe400aaf23afae6bb8
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SHA1
652362c813b9433d0bf9b032d7af074ed2a2a9a3
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SHA256
38697b0beb28935a979b3569793cf8c8393e466935ef1f35c4c7f3eee8b00bda
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SHA512
1d3f1ff37de29a50d78b2289980dfc0b5a4407971af9edeee325fc0cf68f568b1d83e4ea1a6179177bfdb5e0797bf861c5ef956ddea6ac012fb4df4553469685
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SSDEEP
98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzM4:9nwn3
Static task
static1
Behavioral task
behavioral1
Sample
2023-08-26_20a25829cbdbfebe400aaf23afae6bb8_ryuk_JC.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
2023-08-26_20a25829cbdbfebe400aaf23afae6bb8_ryuk_JC.exe
Resource
win10v2004-20230915-en
Malware Config
Targets
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Target
2023-08-26_20a25829cbdbfebe400aaf23afae6bb8_ryuk_JC.exe
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Size
7.8MB
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MD5
20a25829cbdbfebe400aaf23afae6bb8
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SHA1
652362c813b9433d0bf9b032d7af074ed2a2a9a3
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SHA256
38697b0beb28935a979b3569793cf8c8393e466935ef1f35c4c7f3eee8b00bda
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SHA512
1d3f1ff37de29a50d78b2289980dfc0b5a4407971af9edeee325fc0cf68f568b1d83e4ea1a6179177bfdb5e0797bf861c5ef956ddea6ac012fb4df4553469685
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SSDEEP
98304:9E2RpMMHMMMvMMZMMMlmMMMiMMMYJMMHMMM6MMZMMMqNMMzMMMUMMVMMMYJMMzM4:9nwn3
Score10/10-
Modifies WinLogon for persistence
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Drops startup file
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Executes dropped EXE
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Loads dropped DLL
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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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Drops autorun.inf file
Malware can abuse Windows Autorun to spread further via attached volumes.
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Drops file in System32 directory
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