General
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Target
2024-04-07_0c131b51e74f221161f6a59c1ea55ab9_virlock
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Size
158KB
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Sample
240407-3cqn9shg44
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MD5
0c131b51e74f221161f6a59c1ea55ab9
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SHA1
de1e1148b26fd0afe1a9d80918c4adcd2469d87a
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SHA256
9088d6a1546ddfe83f0ddd30995a7fac08ee96ead9cb948761e272ee80ec260c
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SHA512
3a25d5b7e61c2f0e1675b5a6e85e15a563de1ff1aadbd81628563a477e4ad760082b722a6ad541ed77b2244a8098fb27b2f43cfa01e2d1e1aa115b9a6dd60b61
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SSDEEP
3072:JWe7YQiw+OEYQZknckQ39jNKjSZsem/W2nS/nehrOi:JWe7fiwdgZYQtsjk/t2r
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-07_0c131b51e74f221161f6a59c1ea55ab9_virlock.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-07_0c131b51e74f221161f6a59c1ea55ab9_virlock.exe
Resource
win10v2004-20240226-en
Malware Config
Targets
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Target
2024-04-07_0c131b51e74f221161f6a59c1ea55ab9_virlock
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Size
158KB
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MD5
0c131b51e74f221161f6a59c1ea55ab9
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SHA1
de1e1148b26fd0afe1a9d80918c4adcd2469d87a
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SHA256
9088d6a1546ddfe83f0ddd30995a7fac08ee96ead9cb948761e272ee80ec260c
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SHA512
3a25d5b7e61c2f0e1675b5a6e85e15a563de1ff1aadbd81628563a477e4ad760082b722a6ad541ed77b2244a8098fb27b2f43cfa01e2d1e1aa115b9a6dd60b61
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SSDEEP
3072:JWe7YQiw+OEYQZknckQ39jNKjSZsem/W2nS/nehrOi:JWe7fiwdgZYQtsjk/t2r
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (88) 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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Deletes itself
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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