Rule: -- Sid: 2176 -- Summary: This event is generated when an attempt is made to access a system file via SMB. -- Impact: Serious. This file contains important operating system information. -- Detailed Information: This event indicates that an attempt was made to access a file containing important operating system information using SMB across the network. -- Affected Systems: Microsoft Windows systems. -- Attack Scenarios: If this file is accessible via SMB the attacker can manipulate the operating system registry settings. -- 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: Microsoft Technet http://support.microsoft.com/support/kb/articles/q153/1/83.asp CVE http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-1999-0562 Winreg http://www.rutherfurd.net/python/winreg/ --
