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General
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Target
2024-10-25_4d16e483d4678c1ea1ac16a72742a5cd_virlock
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Size
160KB
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Sample
241025-zcbcssskex
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MD5
4d16e483d4678c1ea1ac16a72742a5cd
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SHA1
565dd8267201c430c03b60a248ee8090a3ed679c
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SHA256
5ee5e28502d007bf4c87baca630e113ca299c3d917c604eecf1c7a088309a3d1
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SHA512
bd6be3b51c9f06ab0e70d5c9daaa115c412f14bffb51bb77a738e5f91c822f06e954f01f447ef16f586feabee44a5d608e3ec474c3c10ed04ce57426f81d9d61
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SSDEEP
3072:M2z5CaJrC9lFiePhsQN1c/JRCZf0iQidwF4wR7MJjhwvh3eDD0WyJT99wVUKi5kr:/zTaFZsuc/JwZ8ipdw/ehWuDhm1Ki5
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-25_4d16e483d4678c1ea1ac16a72742a5cd_virlock.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-25_4d16e483d4678c1ea1ac16a72742a5cd_virlock.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
2024-10-25_4d16e483d4678c1ea1ac16a72742a5cd_virlock
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Size
160KB
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MD5
4d16e483d4678c1ea1ac16a72742a5cd
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SHA1
565dd8267201c430c03b60a248ee8090a3ed679c
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SHA256
5ee5e28502d007bf4c87baca630e113ca299c3d917c604eecf1c7a088309a3d1
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SHA512
bd6be3b51c9f06ab0e70d5c9daaa115c412f14bffb51bb77a738e5f91c822f06e954f01f447ef16f586feabee44a5d608e3ec474c3c10ed04ce57426f81d9d61
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SSDEEP
3072:M2z5CaJrC9lFiePhsQN1c/JRCZf0iQidwF4wR7MJjhwvh3eDD0WyJT99wVUKi5kr:/zTaFZsuc/JwZ8ipdw/ehWuDhm1Ki5
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Modifies visibility of file extensions in Explorer
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Renames multiple (87) 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
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