Suspicious storagekitd Spawning Third-Party Filesystem Binary from Library Filesystems (via process_creation)

ATT&CK techniques

Priv Esc → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
- T1548Abuse Elevation Control Mechanism
Defense Evasion
- T1548Abuse Elevation Control Mechanism
- T1553Subvert Trust Controls
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects the SIP-heritable daemon storagekitd spawning a third-party filesystem binary located under /Library/Filesystems, the core behavior of the macOS System Integrity Protection bypass tracked as CVE-2024-44243. Adversaries abuse storagekitd com.apple.rootless.install.heritable entitlement to run attacker-controlled newfs and fsck helpers with SIP-bypassing privileges, making early detection critical for stopping kernel extension loading and rootkit installation.

Reporting behind it

Related detections9 linkedT1548 — drag to rearrange

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Malicious macOS Credential Verification via dscl authonly

Suspicious storagekitd Spawning Third-Party Filesystem Binary from Library Filesystems (via process_creation)

Pivot detection · T1548 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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