General
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Target
2024-04-25_a38003cb861e0c959293991078f42d53_virlock
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Size
116KB
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Sample
240425-t7m27ach27
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MD5
a38003cb861e0c959293991078f42d53
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SHA1
14a30ff7baa6f3d1a429df1a7f5106b2ef6e277d
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SHA256
b624878162700ef8a520ff0ee403f230cfa6897c1f6ca918f5fc4826cb2ea133
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SHA512
de30d5dc9f9c216da47ab89503fda0bf307729bc4d4280f47b1e68846f0bf688157db7fc499ba50a00bdfd1ef21ccbaabb8d001d5cb02467c50808397455fb89
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SSDEEP
3072:rdJOzbbAqXHkQqom2AidmpwTXIPLgHAZiq:rmzHrf3mbi8p84LOA
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-25_a38003cb861e0c959293991078f42d53_virlock.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-25_a38003cb861e0c959293991078f42d53_virlock.exe
Resource
win10v2004-20240226-en
Malware Config
Targets
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Target
2024-04-25_a38003cb861e0c959293991078f42d53_virlock
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Size
116KB
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MD5
a38003cb861e0c959293991078f42d53
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SHA1
14a30ff7baa6f3d1a429df1a7f5106b2ef6e277d
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SHA256
b624878162700ef8a520ff0ee403f230cfa6897c1f6ca918f5fc4826cb2ea133
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SHA512
de30d5dc9f9c216da47ab89503fda0bf307729bc4d4280f47b1e68846f0bf688157db7fc499ba50a00bdfd1ef21ccbaabb8d001d5cb02467c50808397455fb89
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SSDEEP
3072:rdJOzbbAqXHkQqom2AidmpwTXIPLgHAZiq:rmzHrf3mbi8p84LOA
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (81) 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 Matrix ATT&CK v13
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1