General
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Target
2024-05-15_b8c1e2b7a4edcf990e2b4bd45183a7c0_virlock
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Size
229KB
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Sample
240515-ntk3safg94
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MD5
b8c1e2b7a4edcf990e2b4bd45183a7c0
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SHA1
91b1c05332325e19f5a572ec7ef48705a9a7a4f5
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SHA256
25cef3e2290e846d0c99126f245ff6b04831cc9fc6ab39b1070e4dc5843757e3
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SHA512
5b61208c6c6b75944bf397bb94ccf0baae618719f92b5f1bb0499d328e80d57cc312a22510e1062e79eae4913b3c178364c1e03b3439f246e1b75d1b2bebfc63
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SSDEEP
3072:N40YyBf+a1DOdRrG+QMHt93CJwCI4la816bmRePvQirVcQZ9KsvcFLDMWsZlD4iH:NpJV1mX3CIIH0vnci9K9LINV4iYAMb
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-15_b8c1e2b7a4edcf990e2b4bd45183a7c0_virlock.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-15_b8c1e2b7a4edcf990e2b4bd45183a7c0_virlock.exe
Resource
win10v2004-20240508-en
Malware Config
Targets
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Target
2024-05-15_b8c1e2b7a4edcf990e2b4bd45183a7c0_virlock
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Size
229KB
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MD5
b8c1e2b7a4edcf990e2b4bd45183a7c0
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SHA1
91b1c05332325e19f5a572ec7ef48705a9a7a4f5
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SHA256
25cef3e2290e846d0c99126f245ff6b04831cc9fc6ab39b1070e4dc5843757e3
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SHA512
5b61208c6c6b75944bf397bb94ccf0baae618719f92b5f1bb0499d328e80d57cc312a22510e1062e79eae4913b3c178364c1e03b3439f246e1b75d1b2bebfc63
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SSDEEP
3072:N40YyBf+a1DOdRrG+QMHt93CJwCI4la816bmRePvQirVcQZ9KsvcFLDMWsZlD4iH:NpJV1mX3CIIH0vnci9K9LINV4iYAMb
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (61) 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
1