General
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Target
2025-07-01_65ca4455ba616a13de512471537c3241_elex_virlock
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Size
784KB
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Sample
250701-jx55xadp91
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MD5
65ca4455ba616a13de512471537c3241
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SHA1
11b844b666df58d280e213964b3e8b87dacbff93
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SHA256
4c8f811be36d50d55619cf56719ff575ce8fad442235c9b9f922d17325765e7c
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SHA512
c1feeb335e7eb168b9916266fc7dcaae1edf449c61fe06c131fbd432e5d31b7437f05e0352306fab93a52d627c2c9dd830e8bd3c2b96178bf2770514b9fcc71d
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SSDEEP
6144:aYbhncNF8/ZTq0VJaVOlYB0MEZKxt6fQ/tbHRDMF3aWOHHk:aecN6/U1ChaWOH
Static task
static1
Behavioral task
behavioral1
Sample
2025-07-01_65ca4455ba616a13de512471537c3241_elex_virlock.exe
Resource
win10v2004-20250502-en
Malware Config
Targets
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Target
2025-07-01_65ca4455ba616a13de512471537c3241_elex_virlock
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Size
784KB
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MD5
65ca4455ba616a13de512471537c3241
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SHA1
11b844b666df58d280e213964b3e8b87dacbff93
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SHA256
4c8f811be36d50d55619cf56719ff575ce8fad442235c9b9f922d17325765e7c
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SHA512
c1feeb335e7eb168b9916266fc7dcaae1edf449c61fe06c131fbd432e5d31b7437f05e0352306fab93a52d627c2c9dd830e8bd3c2b96178bf2770514b9fcc71d
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SSDEEP
6144:aYbhncNF8/ZTq0VJaVOlYB0MEZKxt6fQ/tbHRDMF3aWOHHk:aecN6/U1ChaWOH
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Modifies visibility of file extensions in Explorer
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UAC bypass
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Renames multiple (88) 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