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General
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Target
2024-05-23_a94521cdb67266001bc7cb26a9f69a5f_virlock
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Size
196KB
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Sample
240523-msghjade47
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MD5
a94521cdb67266001bc7cb26a9f69a5f
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SHA1
1f43d1ed84c8364a636f247191b90e210d50e55c
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SHA256
93458ccffbf93e914273f07f982a2b35ca52c29eab962cdb4e4074fd9fee96c4
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SHA512
ac0fb81f63e232d7d3c41a681f912d385ea368aa20023639f284777525a9c0e711b62c92ad3b735756a63337ac7a633b1488954e00fd46dc85a8d2232040edf8
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SSDEEP
3072:RgiWNBtVui51S9sY3N6TmuxHlVaDbR08xft9/j6HTUvhRcK7:SNBtVuibS9syMxFVC08Zr6YD
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-23_a94521cdb67266001bc7cb26a9f69a5f_virlock.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-05-23_a94521cdb67266001bc7cb26a9f69a5f_virlock.exe
Resource
win10v2004-20240426-en
Malware Config
Targets
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Target
2024-05-23_a94521cdb67266001bc7cb26a9f69a5f_virlock
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Size
196KB
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MD5
a94521cdb67266001bc7cb26a9f69a5f
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SHA1
1f43d1ed84c8364a636f247191b90e210d50e55c
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SHA256
93458ccffbf93e914273f07f982a2b35ca52c29eab962cdb4e4074fd9fee96c4
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SHA512
ac0fb81f63e232d7d3c41a681f912d385ea368aa20023639f284777525a9c0e711b62c92ad3b735756a63337ac7a633b1488954e00fd46dc85a8d2232040edf8
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SSDEEP
3072:RgiWNBtVui51S9sY3N6TmuxHlVaDbR08xft9/j6HTUvhRcK7:SNBtVuibS9syMxFVC08Zr6YD
Score10/10-
Modifies visibility of file extensions in Explorer
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Renames multiple (59) 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
1