Removal of Quarantine Attribute from Masqueraded com.apple.trustd Payload
This rule detects suspicious activity involving the modification of file attributes on macOS, specifically targeting the removal of the 'com.apple.quarantine' extended attribute and the manipulation of files associated with 'com.apple.trustd'. Such actions are indicative of an adversary attempting to bypass Gatekeeper security controls or execute masqueraded payloads by stripping quarantine flags or modifying execution permissions.
Sigma
