General
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Target
2025-01-15_2172a1a9abb1dde7ae209b4e036b99a8_virlock
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Size
652KB
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Sample
250115-taxv5axlcz
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MD5
2172a1a9abb1dde7ae209b4e036b99a8
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SHA1
3f3a6aa32365f3f8999ac1742345d44a800fb290
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SHA256
a5c93a4e020f25e56fd1ee531fb7b13f1d65c20029601ddbeca0e138e97fd13c
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SHA512
43cd85ca1f266d597d69f5fbf0168733624cb81852bbe0ecfdfbee095ee6a08687d4b360d68b0e96ccc647b91bae3656431af6f2957b7c927cc24a879386e736
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SSDEEP
12288:vIm6FyWxQ3ZYkeMGgn25PmLWwTLxxj73hhbZu4S2zjaoSQ+aeaUjSrJC88oVFuTJ:vIBFy04NeMGh5PmL9LnhSmz+baRFA6
Static task
static1
Behavioral task
behavioral1
Sample
2025-01-15_2172a1a9abb1dde7ae209b4e036b99a8_virlock.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-01-15_2172a1a9abb1dde7ae209b4e036b99a8_virlock.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
2025-01-15_2172a1a9abb1dde7ae209b4e036b99a8_virlock
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Size
652KB
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MD5
2172a1a9abb1dde7ae209b4e036b99a8
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SHA1
3f3a6aa32365f3f8999ac1742345d44a800fb290
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SHA256
a5c93a4e020f25e56fd1ee531fb7b13f1d65c20029601ddbeca0e138e97fd13c
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SHA512
43cd85ca1f266d597d69f5fbf0168733624cb81852bbe0ecfdfbee095ee6a08687d4b360d68b0e96ccc647b91bae3656431af6f2957b7c927cc24a879386e736
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SSDEEP
12288:vIm6FyWxQ3ZYkeMGgn25PmLWwTLxxj73hhbZu4S2zjaoSQ+aeaUjSrJC88oVFuTJ:vIBFy04NeMGh5PmL9LnhSmz+baRFA6
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Modifies visibility of file extensions in Explorer
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Renames multiple (61) 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
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