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General
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Target
2024-10-21_75f8ebb1017dba2c5c59b0b00e820afb_virlock
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Size
640KB
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Sample
241021-bwd12atcqj
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MD5
75f8ebb1017dba2c5c59b0b00e820afb
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SHA1
d7a509ae91a28ca4a41d3289a129b877f80627a1
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SHA256
986ae6086058d69ddc3473b9e7c2648577a596567ee20b1c3fd7981b52503f44
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SHA512
b5c4a919ed90301bc9965ebc383d80619537252a87e4716e0dd81f148ee579857fc604923fb3f2870a0a4660ee5881cf6c4656216f46430be29a75c9b0a3eae3
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SSDEEP
12288:0d+KlO1DJkh2YqSOdiFTbx0l56czMRmX33lgQpuTpi1mzlYnahtN5X5A2JX29znb:IYDA2Y3OMTbC2dkn9puADlp
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-21_75f8ebb1017dba2c5c59b0b00e820afb_virlock.exe
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
2024-10-21_75f8ebb1017dba2c5c59b0b00e820afb_virlock.exe
Resource
win10v2004-20241007-en
Malware Config
Targets
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Target
2024-10-21_75f8ebb1017dba2c5c59b0b00e820afb_virlock
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Size
640KB
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MD5
75f8ebb1017dba2c5c59b0b00e820afb
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SHA1
d7a509ae91a28ca4a41d3289a129b877f80627a1
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SHA256
986ae6086058d69ddc3473b9e7c2648577a596567ee20b1c3fd7981b52503f44
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SHA512
b5c4a919ed90301bc9965ebc383d80619537252a87e4716e0dd81f148ee579857fc604923fb3f2870a0a4660ee5881cf6c4656216f46430be29a75c9b0a3eae3
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SSDEEP
12288:0d+KlO1DJkh2YqSOdiFTbx0l56czMRmX33lgQpuTpi1mzlYnahtN5X5A2JX29znb:IYDA2Y3OMTbC2dkn9puADlp
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Modifies visibility of file extensions in Explorer
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Renames multiple (80) 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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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