General
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Target
2025-05-02_621e1ec8dc24d55baf76786a734da648_elex_virlock
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Size
313KB
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Sample
250502-nc1f5szxby
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MD5
621e1ec8dc24d55baf76786a734da648
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SHA1
d7574a1546844d07206f965be31e3c07cc4a69bd
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SHA256
4d8d1c96ebf194d984a3d260a814e3ba29d446fc2dc9445cad79811cb904a03f
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SHA512
b19e6f4a392a85cae5490dcbbf35aae690b7819e6004060dd2593a7b0bb76c00192d6c7b1ef408fdfb046c4a57dda1dfec98aa43b59ba169dc5693b75a0cbf92
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SSDEEP
6144:oZ1PqdcdNeYa9PiToCfB0DYW7fGw0k7CHdTY/3HQjXqxQkdiUDotbH:oZJJdNeYa9QQqw0k7qU/3yqb5C
Static task
static1
Behavioral task
behavioral1
Sample
2025-05-02_621e1ec8dc24d55baf76786a734da648_elex_virlock.exe
Resource
win10v2004-20250410-en
Behavioral task
behavioral2
Sample
2025-05-02_621e1ec8dc24d55baf76786a734da648_elex_virlock.exe
Resource
win11-20250410-en
Malware Config
Targets
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Target
2025-05-02_621e1ec8dc24d55baf76786a734da648_elex_virlock
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Size
313KB
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MD5
621e1ec8dc24d55baf76786a734da648
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SHA1
d7574a1546844d07206f965be31e3c07cc4a69bd
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SHA256
4d8d1c96ebf194d984a3d260a814e3ba29d446fc2dc9445cad79811cb904a03f
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SHA512
b19e6f4a392a85cae5490dcbbf35aae690b7819e6004060dd2593a7b0bb76c00192d6c7b1ef408fdfb046c4a57dda1dfec98aa43b59ba169dc5693b75a0cbf92
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SSDEEP
6144:oZ1PqdcdNeYa9PiToCfB0DYW7fGw0k7CHdTY/3HQjXqxQkdiUDotbH:oZJJdNeYa9QQqw0k7qU/3yqb5C
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Modifies visibility of file extensions in Explorer
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UAC bypass
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Renames multiple (95) 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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Adds Run key to start application
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v16
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Hide Artifacts
1Hidden Files and Directories
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
4Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1