Tamper With Sophos AV Registry Keys

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About the rule

Rule Type

Standard

Rule Description

Detects tamper attempts to sophos av functionality via registry key modification

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Registry value modified" AND (OBJECTNAME contains "\Sophos Endpoint Defense\TamperProtection\Config\SAVEnabled,\Sophos Endpoint Defense\TamperProtection\Config\SEDEnabled,\Sophos\SAVService\TamperProtection\Enabled" OR ((OBJECTNAME endswith "\Sophos Endpoint Defense\TamperProtection\Config" AND OBJECTVALUENAME startswith "SAVEnabled") OR (OBJECTNAME endswith "\Sophos Endpoint Defense\TamperProtection\Config" AND OBJECTVALUENAME startswith "SEDEnabled") OR (OBJECTNAME endswith "\Sophos\SAVService\TamperProtection" AND OBJECTVALUENAME startswith "Enabled"))) AND (INFORMATION = "DWORD (0x00000000)" OR (CHANGES = 0 AND NEWTYPE = "REG_DWORD")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Nasreddine Bencherchali (Nextron Systems)