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General
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Target
2024-04-17_befa77d0e7d6c251940ec9f975c6d5b9_virlock
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Size
253KB
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Sample
240417-c6lz3abf25
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MD5
befa77d0e7d6c251940ec9f975c6d5b9
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SHA1
89b9ebb0ad74d28d6e6a70823ed975263d6254f3
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SHA256
85da9228e34d7a8c944352d2a3e71883a2559dab0efac3488c47e6a739b481d8
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SHA512
2e1de27d4640624c4547df57b8acf7b9e7a7957cdbb1157b147b3f8b07c08d568fb85532a6eacb955c8082faddb356e9eeaff895cce6887a5d3c16949c0ca2bf
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SSDEEP
6144:OsO2HVogXW8rApbO3vxJH9Zn6upRwYhObFTK1k8tQwm:muVoaW8rApAH9eKOZTK7E
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-17_befa77d0e7d6c251940ec9f975c6d5b9_virlock.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-17_befa77d0e7d6c251940ec9f975c6d5b9_virlock.exe
Resource
win10v2004-20240412-en
Malware Config
Targets
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Target
2024-04-17_befa77d0e7d6c251940ec9f975c6d5b9_virlock
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Size
253KB
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MD5
befa77d0e7d6c251940ec9f975c6d5b9
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SHA1
89b9ebb0ad74d28d6e6a70823ed975263d6254f3
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SHA256
85da9228e34d7a8c944352d2a3e71883a2559dab0efac3488c47e6a739b481d8
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SHA512
2e1de27d4640624c4547df57b8acf7b9e7a7957cdbb1157b147b3f8b07c08d568fb85532a6eacb955c8082faddb356e9eeaff895cce6887a5d3c16949c0ca2bf
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SSDEEP
6144:OsO2HVogXW8rApbO3vxJH9Zn6upRwYhObFTK1k8tQwm:muVoaW8rApAH9eKOZTK7E
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (89) 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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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
1