General
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Target
2024-04-03_6d632f83ec89a2fc92ad238f512e63c7_virlock
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Size
152KB
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Sample
240403-npwzgsda78
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MD5
6d632f83ec89a2fc92ad238f512e63c7
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SHA1
5fc0bc98206c47ae37ef9e508dd731cffc856570
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SHA256
fd5c5b32fc598588d980a1d4b54f4739bd376da59457f16efb3e8ba0076272b7
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SHA512
20967d1cf11aed1bb66ec8bb3e9ce2628ae9e9eb1acd6d22a9c4bf52a738bdc11fe962e502507d5e4927c029c52b669010f181073e9b182eafd84d13958dbca6
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SSDEEP
3072:ZY4RZr5Cwo16UrsE1MER2SHRXklwSRfoTBdHRZm0DxgRvw:ZY8qwa6c1MniZkXoXHjDxgRv
Behavioral task
behavioral1
Sample
2024-04-03_6d632f83ec89a2fc92ad238f512e63c7_virlock.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-03_6d632f83ec89a2fc92ad238f512e63c7_virlock.exe
Resource
win10v2004-20240226-en
Malware Config
Targets
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Target
2024-04-03_6d632f83ec89a2fc92ad238f512e63c7_virlock
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Size
152KB
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MD5
6d632f83ec89a2fc92ad238f512e63c7
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SHA1
5fc0bc98206c47ae37ef9e508dd731cffc856570
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SHA256
fd5c5b32fc598588d980a1d4b54f4739bd376da59457f16efb3e8ba0076272b7
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SHA512
20967d1cf11aed1bb66ec8bb3e9ce2628ae9e9eb1acd6d22a9c4bf52a738bdc11fe962e502507d5e4927c029c52b669010f181073e9b182eafd84d13958dbca6
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SSDEEP
3072:ZY4RZr5Cwo16UrsE1MER2SHRXklwSRfoTBdHRZm0DxgRvw:ZY8qwa6c1MniZkXoXHjDxgRv
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Modifies visibility of file extensions in Explorer
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Renames multiple (72) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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UPX dump on OEP (original entry point)
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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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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