General
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Target
2025-05-19_db85235cef0bce8ca94df2eec1a80419_elex_virlock
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Size
2.5MB
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Sample
250519-m8fk6sfj61
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MD5
db85235cef0bce8ca94df2eec1a80419
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SHA1
42558e4f9e3be67f6be5772e6a61114af870fea3
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SHA256
5735bd96ae67cf917bfe18a804ed25b38e464d6c4a26f7fa1164d581be7f4972
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SHA512
18afaa3d08d79b54d34a01840f31f75241fd01f2cb870cea59720dc9f08d2ad3549d0896fe63a4b2deabd78d2ae3b7e09cfc0c8fcdf4c541714acc38fd285b20
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SSDEEP
49152:R4uhVddimxj1JjgDb1gQlmdINaHbidD4zWZMXg:VhVqmxj1Jjgn9lmdMgq8zbg
Static task
static1
Behavioral task
behavioral1
Sample
2025-05-19_db85235cef0bce8ca94df2eec1a80419_elex_virlock.exe
Resource
win10v2004-20250502-en
Malware Config
Targets
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Target
2025-05-19_db85235cef0bce8ca94df2eec1a80419_elex_virlock
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Size
2.5MB
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MD5
db85235cef0bce8ca94df2eec1a80419
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SHA1
42558e4f9e3be67f6be5772e6a61114af870fea3
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SHA256
5735bd96ae67cf917bfe18a804ed25b38e464d6c4a26f7fa1164d581be7f4972
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SHA512
18afaa3d08d79b54d34a01840f31f75241fd01f2cb870cea59720dc9f08d2ad3549d0896fe63a4b2deabd78d2ae3b7e09cfc0c8fcdf4c541714acc38fd285b20
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SSDEEP
49152:R4uhVddimxj1JjgDb1gQlmdINaHbidD4zWZMXg:VhVqmxj1Jjgn9lmdMgq8zbg
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Modifies visibility of file extensions in Explorer
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UAC bypass
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Renames multiple (75) 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