Rule: -- Sid: 217 -- Summary: This event is generated when an attacker attempts to connect to a Telnet server using the phrase "hax0r". This is a known password for the sm4ck Linux rootkit. -- Impact: Possible theft of data and control of the targeted machine leading to a compromise of all resources the machine is connected to. -- Detailed Information: This Trojan affects Linux operating systems: Due to the nature of this Trojan it is unlikely that the attacker's client IP address has been spoofed. -- Attack Scenarios: This Trojan may be delivered to the target in a number of ways. This event is indicative of an existing infection being activated. Initial compromise may be due to the exploitation of another vulnerability and the attacker is leaving another way into the machine for further use. -- Ease of Attack: This is Trojan activity, the target machine may already be compromised. -- False Positives: None Known -- False Negatives: None Known -- Corrective Action: Disallow Telnet access from external sources. Use SSH as opposed to Telnet for access from external locations Delete the Trojan and kill any associated processes. -- Contributors: Original rule writer unknown Sourcefire Vulnerability Research Team Nigel Houghton -- Additional References: --
