Rule: -- Sid: 2176 -- Summary: This event is generated when an attempt is made to shutdown a service via SMB. -- Impact: Serious. -- Detailed Information: This event indicates that an attempt was made to shutdown a service on a system using SMB across the network. -- Affected Systems: Microsoft Windows systems. -- Attack Scenarios: An attacker may try to deny services to other users. -- Ease of Attack: Simple. -- False Positives: None known. -- False Negatives: None Known. -- Corrective Action: Check the host for signs of system compromise. Turn off file and print sharing on the target host. Use a packet filtering firewall to disallow SMB access to the host from sources external to the protected network. -- Contributors: Sourcefire Research Team Brian Caswell <bmc@sourcefire.com> Nigel Houghton <nigel.houghton@sourcefire.com> -- Additional References: --