General
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Target
2024-10-19_f1b43cad80ad7e5cbed31fd3f828b49c_virlock
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Size
347KB
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Sample
241019-1mkjws1blf
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MD5
f1b43cad80ad7e5cbed31fd3f828b49c
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SHA1
b4e5364d1296c00c1e329f7e66f15bc7ec3ce78d
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SHA256
ba2a9b99833d0584a4db41b766b526fc7e27c37b3e3c1552e5d957598d725b5f
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SHA512
6f9e50251a9594c9edfa1c4449c28d92dd5bf4aaa1d552bae31422e7ab5edff3d5300fea61cd4650c65b407fc1ccb58b51fdeff3f03f5dbcd6187335fc2757e8
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SSDEEP
6144:MVLb7+PjyB5+SjKFqOLMeFveBXE7qNqvh:CLb7ajaCqQReiqNY
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-19_f1b43cad80ad7e5cbed31fd3f828b49c_virlock.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-19_f1b43cad80ad7e5cbed31fd3f828b49c_virlock.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
2024-10-19_f1b43cad80ad7e5cbed31fd3f828b49c_virlock
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Size
347KB
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MD5
f1b43cad80ad7e5cbed31fd3f828b49c
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SHA1
b4e5364d1296c00c1e329f7e66f15bc7ec3ce78d
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SHA256
ba2a9b99833d0584a4db41b766b526fc7e27c37b3e3c1552e5d957598d725b5f
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SHA512
6f9e50251a9594c9edfa1c4449c28d92dd5bf4aaa1d552bae31422e7ab5edff3d5300fea61cd4650c65b407fc1ccb58b51fdeff3f03f5dbcd6187335fc2757e8
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SSDEEP
6144:MVLb7+PjyB5+SjKFqOLMeFveBXE7qNqvh:CLb7ajaCqQReiqNY
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Modifies visibility of file extensions in Explorer
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Renames multiple (89) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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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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Adds Run key to start application
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Hide Artifacts
1Hidden Files and Directories
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
4Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1