General
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Target
2024-10-16_871695fdef1bd8462baa1fcf55ce78ba_virlock
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Size
195KB
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Sample
241016-t9n29szerd
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MD5
871695fdef1bd8462baa1fcf55ce78ba
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SHA1
6880c724f410aab75c811ee5ed2da1d01c893364
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SHA256
d73489f8ab6317abf9fd463f4c1416468ef3c6102c987feab306a1f7b2472057
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SHA512
127a52cf9198f1d13506825dcaa0910e45845d9c57cb2a5950e7e27200c45df3dd679e84a503782d016006944c989e2a33af6bc4cfa69eaff0ecc10c8e3c5650
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SSDEEP
3072:z+j3qyp1GEu8jbL1Ez9vyhgN4JwtkSeUUnNOs77XI/vY1EjTysV:3cQhSbhCZNNHkP4nY1EjhV
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-16_871695fdef1bd8462baa1fcf55ce78ba_virlock.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2024-10-16_871695fdef1bd8462baa1fcf55ce78ba_virlock.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
2024-10-16_871695fdef1bd8462baa1fcf55ce78ba_virlock
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Size
195KB
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MD5
871695fdef1bd8462baa1fcf55ce78ba
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SHA1
6880c724f410aab75c811ee5ed2da1d01c893364
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SHA256
d73489f8ab6317abf9fd463f4c1416468ef3c6102c987feab306a1f7b2472057
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SHA512
127a52cf9198f1d13506825dcaa0910e45845d9c57cb2a5950e7e27200c45df3dd679e84a503782d016006944c989e2a33af6bc4cfa69eaff0ecc10c8e3c5650
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SSDEEP
3072:z+j3qyp1GEu8jbL1Ez9vyhgN4JwtkSeUUnNOs77XI/vY1EjTysV:3cQhSbhCZNNHkP4nY1EjhV
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Modifies visibility of file extensions in Explorer
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Renames multiple (57) 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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Deletes itself
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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