General
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Target
2025-05-15_042a1bb775a1bf1e158ddd77a2c0ab25_elex_virlock
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Size
783KB
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Sample
250515-dx9kfazyfw
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MD5
042a1bb775a1bf1e158ddd77a2c0ab25
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SHA1
11829aa59f7ea7b7ed4bddd9900a0ebf7a8e7464
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SHA256
efc2e7e8df920c7b2242fb9266e55b987d2150c1dda8a13687eb533a70b993a3
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SHA512
4c650d9d7354b4b7e5ccdad295fa474b06e7a5c63ee8db6b5a1928435641a040364fceaaca632e4e1973869b9f544f280f496c9742abf15aa53c4554c0646747
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SSDEEP
6144:5iNUYoJoUIG06YJWoj7Sgx+gCdPUhOeZx0UkW4UyJx:5JoUIGiJWoj7Sgx+gCdPUhOeZx0UU
Static task
static1
Behavioral task
behavioral1
Sample
2025-05-15_042a1bb775a1bf1e158ddd77a2c0ab25_elex_virlock.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
2025-05-15_042a1bb775a1bf1e158ddd77a2c0ab25_elex_virlock.exe
Resource
win11-20250502-en
Malware Config
Targets
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Target
2025-05-15_042a1bb775a1bf1e158ddd77a2c0ab25_elex_virlock
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Size
783KB
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MD5
042a1bb775a1bf1e158ddd77a2c0ab25
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SHA1
11829aa59f7ea7b7ed4bddd9900a0ebf7a8e7464
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SHA256
efc2e7e8df920c7b2242fb9266e55b987d2150c1dda8a13687eb533a70b993a3
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SHA512
4c650d9d7354b4b7e5ccdad295fa474b06e7a5c63ee8db6b5a1928435641a040364fceaaca632e4e1973869b9f544f280f496c9742abf15aa53c4554c0646747
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SSDEEP
6144:5iNUYoJoUIG06YJWoj7Sgx+gCdPUhOeZx0UkW4UyJx:5JoUIGiJWoj7Sgx+gCdPUhOeZx0UU
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Modifies visibility of file extensions in Explorer
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UAC bypass
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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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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