General
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Target
2024-02-23_ead34dbd568dab561004d36d88990158_virlock
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Size
565KB
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Sample
240223-rp3ntaba29
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MD5
ead34dbd568dab561004d36d88990158
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SHA1
e2649906fb1b631a0b3795cfd6f853fdd3302cc5
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SHA256
43664f03b4fb5ceb748682c4c8313e45096405b9f6f6ae113d952d104d651736
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SHA512
dfaacb79888ed2c1af33e262208ac8015accc1dbbae4736d692282987b30b2b2edea18713183fa5380f69517775949d1e99c7cd2b8b2e19f22c1705134cf26ee
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SSDEEP
6144:IiQUcffBAhyFp02NOUzoShm4sddqsfcxxEEOVJ4ZujBLNZW5xbqh23fCcb/pr4:+hAhaZOaoShMwzxfHZ4BfWjbwItr4
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-23_ead34dbd568dab561004d36d88990158_virlock.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-23_ead34dbd568dab561004d36d88990158_virlock.exe
Resource
win10v2004-20240221-en
Malware Config
Targets
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Target
2024-02-23_ead34dbd568dab561004d36d88990158_virlock
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Size
565KB
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MD5
ead34dbd568dab561004d36d88990158
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SHA1
e2649906fb1b631a0b3795cfd6f853fdd3302cc5
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SHA256
43664f03b4fb5ceb748682c4c8313e45096405b9f6f6ae113d952d104d651736
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SHA512
dfaacb79888ed2c1af33e262208ac8015accc1dbbae4736d692282987b30b2b2edea18713183fa5380f69517775949d1e99c7cd2b8b2e19f22c1705134cf26ee
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SSDEEP
6144:IiQUcffBAhyFp02NOUzoShm4sddqsfcxxEEOVJ4ZujBLNZW5xbqh23fCcb/pr4:+hAhaZOaoShMwzxfHZ4BfWjbwItr4
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Modifies visibility of file extensions in Explorer
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Renames multiple (79) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Downloads MZ/PE file
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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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Registers COM server for autorun
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Adds Run key to start application
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Checks for any installed AV software in registry
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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
2Registry Run Keys / Startup Folder
2Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Hide Artifacts
1Hidden Files and Directories
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
6