Rule:

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Sid:
4060

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Summary:
This event is generated when at attempt is made to connect via the
Remote Desktop Protocol (RDP) as an Administrator.

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Impact:
Policy Violation. Remote RDP access as the Administrator user is not
recommended and may indicate malicious activity.

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Detailed Information:
Remote Desktop Protocol provides remote terminal service access. 
Connecting as the user Administrator is not recommended from outside of
the network.  Other more secure protocols such as secure shell are
preferable for connecting inside the network and then using RDP within
the network.

An exploit for RDP attempts to connect to the internal network with the
Administrator user.

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Attack Scenarios:
An attacker may exploit a vulnerability in RDP using the Administrator
user.

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Ease of Attack:
Simple. Exploit code is available.

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False Positives:
If policy allows remote RDP traffic with the Administrator user, a false
positive event will be generated.

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False Negatives:
Exploit traffic that does not use the Administrator user may not be
detected.

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Corrective Action:
Disallow the use of RDP or disallow access by Administrator

Apply the appropriate vendor supplied patches.

Upgrade to the latest non-affected version of the software.

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Contributors:
Sourcefire Vulnerability Research Team
Judy Novak <judy.novak@sourcefire.com>

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Additional References:

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