General
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Target
2024-04-03_544db6d59b25248df3c9cf9b9b33b544_virlock
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Size
709KB
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Sample
240403-w945lahb8s
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MD5
544db6d59b25248df3c9cf9b9b33b544
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SHA1
41fcdaa68b616b5ffaff9c4e7a4f76445372102a
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SHA256
6d361226ae035f3b21c1cdbc55ddd68ae2eed78b9bcaaa3ab7373d670cfd70be
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SHA512
e992a614ee2ea8a0bb07648e44b2f86c34bd627567a46d64481f5fded670e3e1667f5e4985a5be87ae4d754d2e7ffa68e76055e950ccca40343c3a2a8e459d36
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SSDEEP
12288:XbccHXQ/j5pGYUd9YTKwdYXspdN9TSR8EJQvct/zrPf5QRNdh3EW9:XbcgQdYYUvYTKapdiRZJJXoh3b
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-03_544db6d59b25248df3c9cf9b9b33b544_virlock.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-03_544db6d59b25248df3c9cf9b9b33b544_virlock.exe
Resource
win10v2004-20240226-en
Malware Config
Targets
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Target
2024-04-03_544db6d59b25248df3c9cf9b9b33b544_virlock
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Size
709KB
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MD5
544db6d59b25248df3c9cf9b9b33b544
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SHA1
41fcdaa68b616b5ffaff9c4e7a4f76445372102a
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SHA256
6d361226ae035f3b21c1cdbc55ddd68ae2eed78b9bcaaa3ab7373d670cfd70be
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SHA512
e992a614ee2ea8a0bb07648e44b2f86c34bd627567a46d64481f5fded670e3e1667f5e4985a5be87ae4d754d2e7ffa68e76055e950ccca40343c3a2a8e459d36
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SSDEEP
12288:XbccHXQ/j5pGYUd9YTKwdYXspdN9TSR8EJQvct/zrPf5QRNdh3EW9:XbcgQdYYUvYTKapdiRZJJXoh3b
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (87) 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