General
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Target
2024-04-03_d7b51b0316573842c186157b726534ed_virlock
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Size
345KB
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Sample
240403-mf1ewace69
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MD5
d7b51b0316573842c186157b726534ed
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SHA1
f3088590f40e76f791300a4adf387d3e2f15497a
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SHA256
9c9c43c72328f51ab9faf34746a63b2428090fc9c731ff3d783d18a434a9844a
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SHA512
71c3ec7bbe8c0da35d27d75337b3236308de351690fbe967c15764ef7da9aa847c50a394e821c87038e9fb450069912817ad45da0d0c121d1857cf70427deda8
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SSDEEP
3072:Mxl9HWkk7F9IUbnJv7zeMYVo/6+7YhkEWXaZLaQ/nUXfvZ+ZPwBk8X5sL:Mxl9bk7FeUJ7z1eRhkvXaZnUewJo
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-03_d7b51b0316573842c186157b726534ed_virlock.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-04-03_d7b51b0316573842c186157b726534ed_virlock.exe
Resource
win10v2004-20240226-en
Malware Config
Targets
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Target
2024-04-03_d7b51b0316573842c186157b726534ed_virlock
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Size
345KB
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MD5
d7b51b0316573842c186157b726534ed
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SHA1
f3088590f40e76f791300a4adf387d3e2f15497a
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SHA256
9c9c43c72328f51ab9faf34746a63b2428090fc9c731ff3d783d18a434a9844a
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SHA512
71c3ec7bbe8c0da35d27d75337b3236308de351690fbe967c15764ef7da9aa847c50a394e821c87038e9fb450069912817ad45da0d0c121d1857cf70427deda8
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SSDEEP
3072:Mxl9HWkk7F9IUbnJv7zeMYVo/6+7YhkEWXaZLaQ/nUXfvZ+ZPwBk8X5sL:Mxl9bk7FeUJ7z1eRhkvXaZnUewJo
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (77) 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