File: 100000169.txt

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Rule: 

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Sid: 
100000169

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Summary: 
The application fingerprinting tool Amap has been detected in HTTP traffic.

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Impact:
An attacker may be attempting to gather information about services on a 
monitored network, in order to discover vulnerabilities in those services.

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Detailed Information:
Amap is an application fingerprinting tool released by a group of security 
experts called THC, "The Hacker's Choice"; it is designed to identify services 
reliably irrespective of the port they are run on. Amap functions by sending 
"triggers" to open ports on a remote system which are designed to elicit a 
response from a particular service. This rule is designed to detect the SSL 
trigger sent by the program.

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Affected Systems:
Any system running an SSL-enabled web server.

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Attack Scenarios:
Attackers will use the Amap application fingerprinting tool.

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Ease of Attack:
Simple, as the program is publicly available and is well-documented.

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False Positives:
None known.

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False Negatives:
None known.

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Corrective Action:
Check system logs and Snort alert logs for suspicious activity.

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Contributors:
rmkml
Sourcefire Research Team

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Additional References

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