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General
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Target
2024-04-05_5833a10bca0cc3f8abfa83cb9a0f0732_virlock
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Size
371KB
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Sample
240405-pqfjkaca9z
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MD5
5833a10bca0cc3f8abfa83cb9a0f0732
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SHA1
057f4950d76b429ad8e3311d245b54ec3871c69c
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SHA256
2e0d6dac0f35836e65cc9b92e0305bc6dae2d5a7c98a28e28c461ba9eb0a24d7
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SHA512
8a8d39ec4d18614634ce64d3afcbda06146f3b55e13fc670e8d3b9306020c19e8fe29a294e306522952a9bccb2f54ee506dd0e487f95856c8fcf08ac5880c596
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SSDEEP
6144:heDE1eWBqolLPHCdQ5EIKH1oSICUCK78JC8S6Z:EDEsolrHyQ8/Z
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-05_5833a10bca0cc3f8abfa83cb9a0f0732_virlock.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-05_5833a10bca0cc3f8abfa83cb9a0f0732_virlock.exe
Resource
win10v2004-20240226-en
Malware Config
Targets
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Target
2024-04-05_5833a10bca0cc3f8abfa83cb9a0f0732_virlock
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Size
371KB
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MD5
5833a10bca0cc3f8abfa83cb9a0f0732
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SHA1
057f4950d76b429ad8e3311d245b54ec3871c69c
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SHA256
2e0d6dac0f35836e65cc9b92e0305bc6dae2d5a7c98a28e28c461ba9eb0a24d7
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SHA512
8a8d39ec4d18614634ce64d3afcbda06146f3b55e13fc670e8d3b9306020c19e8fe29a294e306522952a9bccb2f54ee506dd0e487f95856c8fcf08ac5880c596
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SSDEEP
6144:heDE1eWBqolLPHCdQ5EIKH1oSICUCK78JC8S6Z:EDEsolrHyQ8/Z
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (86) 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