General
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Target
2024-04-28_163b73412cc4db85da4a38e67babd5c7_virlock
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Size
533KB
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Sample
240428-mescwade82
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MD5
163b73412cc4db85da4a38e67babd5c7
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SHA1
15e74833bf23a33f75d6969bcadd06fa7971ddad
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SHA256
84caa82c2e311f6dfe9e74e4febaa933163ce08231b86a549eeff85555ff9aa7
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SHA512
28309f2478996f8be640be855d5eeda49407dca1285fb726490b16f887856ba3a6fa59e179cf096d3857c6a88c876c41fd7c2c6fb3da9a251a85a8e56178f567
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SSDEEP
12288:y3qfTXvUBVBg6DKajHYzmYuDE/4OV8GW:y3qvUjBlr4zWQ/4OV8
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-28_163b73412cc4db85da4a38e67babd5c7_virlock.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-28_163b73412cc4db85da4a38e67babd5c7_virlock.exe
Resource
win10v2004-20240419-en
Malware Config
Targets
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Target
2024-04-28_163b73412cc4db85da4a38e67babd5c7_virlock
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Size
533KB
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MD5
163b73412cc4db85da4a38e67babd5c7
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SHA1
15e74833bf23a33f75d6969bcadd06fa7971ddad
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SHA256
84caa82c2e311f6dfe9e74e4febaa933163ce08231b86a549eeff85555ff9aa7
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SHA512
28309f2478996f8be640be855d5eeda49407dca1285fb726490b16f887856ba3a6fa59e179cf096d3857c6a88c876c41fd7c2c6fb3da9a251a85a8e56178f567
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SSDEEP
12288:y3qfTXvUBVBg6DKajHYzmYuDE/4OV8GW:y3qvUjBlr4zWQ/4OV8
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (57) 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 Matrix ATT&CK v13
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1