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General
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Target
2024-03-04_4a3143bcb1176da995d8b0256c1efbd4_virlock
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Size
255KB
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Sample
240304-qmyreacc79
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MD5
4a3143bcb1176da995d8b0256c1efbd4
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SHA1
b596490f0fa1a3f9fb616a5544cd7b82451a3885
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SHA256
1bce0259ca5712bac00a1c51e3289bf1f51e2e43c9c491d877f2890a4e6b0dcd
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SHA512
663ed697cbd20a462b0294cefa9fb180ff65da4c7bf8a3953fd5ca6b9234dba083918e7139bdd266e9c6505c2cf799c3ff0a32b44571f774a7dfe699b5120b16
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SSDEEP
6144:ZAMu/LfXQ6G9SLfu7HXLh1jlbcrAMc18/DUhnzEH:iVQ6GcfuzLh1jlbcrAMc18/DGnwH
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-04_4a3143bcb1176da995d8b0256c1efbd4_virlock.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-04_4a3143bcb1176da995d8b0256c1efbd4_virlock.exe
Resource
win10v2004-20240226-en
Malware Config
Targets
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Target
2024-03-04_4a3143bcb1176da995d8b0256c1efbd4_virlock
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Size
255KB
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MD5
4a3143bcb1176da995d8b0256c1efbd4
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SHA1
b596490f0fa1a3f9fb616a5544cd7b82451a3885
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SHA256
1bce0259ca5712bac00a1c51e3289bf1f51e2e43c9c491d877f2890a4e6b0dcd
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SHA512
663ed697cbd20a462b0294cefa9fb180ff65da4c7bf8a3953fd5ca6b9234dba083918e7139bdd266e9c6505c2cf799c3ff0a32b44571f774a7dfe699b5120b16
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SSDEEP
6144:ZAMu/LfXQ6G9SLfu7HXLh1jlbcrAMc18/DUhnzEH:iVQ6GcfuzLh1jlbcrAMc18/DGnwH
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (82) 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