General
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Target
2025-06-30_a733a3de85de1b61434be452a00c74e6_elex_virlock
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Size
758KB
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Sample
250630-zjph1avpw7
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MD5
a733a3de85de1b61434be452a00c74e6
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SHA1
d04fb1364200caeec1301f0d3ea88da58c00c6ad
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SHA256
903bfc28d695154dfd4ae3d5889f7d90f267758ce48f59222418c3fdeacc4313
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SHA512
6dddf17d3cc3e02086e062c502d60f62bd6203dc18c6263751ce3f202f6b27bffe9a1391ca4ea051f69669b82416f9c41d1fc45071e8359f15164f1c5e4f2f5a
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SSDEEP
12288:YtC5Ug1sG2eA5q+X/GF5YBPVtQpYhlOmN2yEOb1NX7EkUjlqvva:RUUEH51Xm5YBPdDNcq1Ncava
Static task
static1
Behavioral task
behavioral1
Sample
2025-06-30_a733a3de85de1b61434be452a00c74e6_elex_virlock.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
2025-06-30_a733a3de85de1b61434be452a00c74e6_elex_virlock.exe
Resource
win11-20250610-en
Malware Config
Targets
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Target
2025-06-30_a733a3de85de1b61434be452a00c74e6_elex_virlock
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Size
758KB
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MD5
a733a3de85de1b61434be452a00c74e6
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SHA1
d04fb1364200caeec1301f0d3ea88da58c00c6ad
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SHA256
903bfc28d695154dfd4ae3d5889f7d90f267758ce48f59222418c3fdeacc4313
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SHA512
6dddf17d3cc3e02086e062c502d60f62bd6203dc18c6263751ce3f202f6b27bffe9a1391ca4ea051f69669b82416f9c41d1fc45071e8359f15164f1c5e4f2f5a
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SSDEEP
12288:YtC5Ug1sG2eA5q+X/GF5YBPVtQpYhlOmN2yEOb1NX7EkUjlqvva:RUUEH51Xm5YBPdDNcq1Ncava
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Modifies visibility of file extensions in Explorer
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UAC bypass
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Renames multiple (78) 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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Adds Run key to start application
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v16
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