General
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Target
2024-10-16_d3e80676315f36ebd805caeba83406b0_ryuk
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Size
27.2MB
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Sample
241016-b2bg4azhlr
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MD5
d3e80676315f36ebd805caeba83406b0
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SHA1
93682e0fe364674df4fe0d8d2e38d11f05ea9f4f
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SHA256
435815bf9aa9bff43d1714001d0dce774bf1c720ac7fe54652b9c97429939fbb
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SHA512
cd3207d92b477d2f1d4ee26ad3633bc847737c5d34f27261d0cdafc6e00ba2fb8b5a47db50b6e4cc1dc0026d82728c1003f4ac5296a15beebad29c9fec788eca
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SSDEEP
786432:p5P00PMH6RNkQs3MJWvB8ipuz/nRZ7hjSpT:pB00PMaHscJWvB8ipunNe
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-16_d3e80676315f36ebd805caeba83406b0_ryuk.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-16_d3e80676315f36ebd805caeba83406b0_ryuk.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
2024-10-16_d3e80676315f36ebd805caeba83406b0_ryuk
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Size
27.2MB
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MD5
d3e80676315f36ebd805caeba83406b0
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SHA1
93682e0fe364674df4fe0d8d2e38d11f05ea9f4f
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SHA256
435815bf9aa9bff43d1714001d0dce774bf1c720ac7fe54652b9c97429939fbb
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SHA512
cd3207d92b477d2f1d4ee26ad3633bc847737c5d34f27261d0cdafc6e00ba2fb8b5a47db50b6e4cc1dc0026d82728c1003f4ac5296a15beebad29c9fec788eca
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SSDEEP
786432:p5P00PMH6RNkQs3MJWvB8ipuz/nRZ7hjSpT:pB00PMaHscJWvB8ipunNe
Score8/10-
Drops file in Drivers directory
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Sets service image path in registry
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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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Impair Defenses: Safe Mode Boot
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Loads dropped DLL
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Modifies file permissions
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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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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
File and Directory Permissions Modification
1Impair Defenses
1Safe Mode Boot
1Modify Registry
2Pre-OS Boot
1Bootkit
1