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General
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Target
2024-03-28_075a7b2ad4f8f6c5b36377ee28d16f89_virlock
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Size
112KB
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Sample
240328-mshqlagd69
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MD5
075a7b2ad4f8f6c5b36377ee28d16f89
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SHA1
29461828281a1f48162d56595a6d2ebfda128634
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SHA256
3523a6cd753c68872b2eb2beb45f67fb79d2e0f5bcbbe6b5dc78eb7aef82379a
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SHA512
a74d5f6478325398e482169d9962abc71a6b73ba62d6ad9a525932b9047070228e6ac4eee6a48bb77b409fcf306c528b701f5240beabf3253ff4dc5bfaddde96
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SSDEEP
3072:R5OIQ43v1T6YhTdKWJlBJHIolzPresrIJU:6IQ4/1T6YhZKEl7rlz/rO
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-28_075a7b2ad4f8f6c5b36377ee28d16f89_virlock.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-03-28_075a7b2ad4f8f6c5b36377ee28d16f89_virlock.exe
Resource
win10v2004-20240226-en
Malware Config
Targets
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Target
2024-03-28_075a7b2ad4f8f6c5b36377ee28d16f89_virlock
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Size
112KB
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MD5
075a7b2ad4f8f6c5b36377ee28d16f89
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SHA1
29461828281a1f48162d56595a6d2ebfda128634
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SHA256
3523a6cd753c68872b2eb2beb45f67fb79d2e0f5bcbbe6b5dc78eb7aef82379a
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SHA512
a74d5f6478325398e482169d9962abc71a6b73ba62d6ad9a525932b9047070228e6ac4eee6a48bb77b409fcf306c528b701f5240beabf3253ff4dc5bfaddde96
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SSDEEP
3072:R5OIQ43v1T6YhTdKWJlBJHIolzPresrIJU:6IQ4/1T6YhZKEl7rlz/rO
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (82) 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
1