General
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Target
2025-01-15_41ac2ad1544a08a63e4b7c3b4d379999_virlock
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Size
653KB
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Sample
250115-vmbn4azqgr
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MD5
41ac2ad1544a08a63e4b7c3b4d379999
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SHA1
1cf17ad86a3eae00f5e54eb9042d0464252d19c3
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SHA256
6c58c711c8aeef4b2210a8363143d1682538a44387117044ff60dda628246ab4
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SHA512
2fe37994bb9b53385d9e870842c0f0b835479b597469b48ba1af95bdeb30050855a133db17cccfd9ef4e4642b5329d5522afbd9833a674bfbaa36a832ee50fc3
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SSDEEP
12288:HSOCPqHTCJAIIAri7mQJvFi67hu/4Jq5qOMme5VH0S9InsATQK8ZDQSbIHku8ik+:HtxzyZizgehuDe5VvQ/
Static task
static1
Behavioral task
behavioral1
Sample
2025-01-15_41ac2ad1544a08a63e4b7c3b4d379999_virlock.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2025-01-15_41ac2ad1544a08a63e4b7c3b4d379999_virlock.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
2025-01-15_41ac2ad1544a08a63e4b7c3b4d379999_virlock
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Size
653KB
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MD5
41ac2ad1544a08a63e4b7c3b4d379999
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SHA1
1cf17ad86a3eae00f5e54eb9042d0464252d19c3
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SHA256
6c58c711c8aeef4b2210a8363143d1682538a44387117044ff60dda628246ab4
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SHA512
2fe37994bb9b53385d9e870842c0f0b835479b597469b48ba1af95bdeb30050855a133db17cccfd9ef4e4642b5329d5522afbd9833a674bfbaa36a832ee50fc3
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SSDEEP
12288:HSOCPqHTCJAIIAri7mQJvFi67hu/4Jq5qOMme5VH0S9InsATQK8ZDQSbIHku8ik+:HtxzyZizgehuDe5VvQ/
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Modifies visibility of file extensions in Explorer
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Renames multiple (60) 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
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