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Rule:
--
Sid:
238
--
Summary:
This event is generated when a command is sent to a Tribal Flood Network
(TFN) Distributed Denial of Service (DDoS) daemon.
--
Impact:
Attempted DDoS. If the listed source IP is in your network, it may be a
TFN client. If the listed destination IP is in your network, it may be
a TFN daemon.
--
Detailed Information:
The TFN DDoS uses a tiered structure of compromised hosts to coordinate
and participate in a distributed denial of service attack. Clients
communicate with daemons to inform them to launch attacks.
This event is indicative of a client sending commands to a daemon.
--
Affected Systems:
Any TFN compromised host.
--
Attack Scenarios:
After a host becomes a TFN daemon, it will respond to client requests.
--
Ease of Attack:
Simple. TFN code is freely available.
--
False Positives:
None Known.
--
False Negatives:
None Known.
--
Corrective Action:
Perform proper forensic analysis on the suspected compromised host to discover the means of compromise.
Rebuild a confirmed compromised host.
Use a packet-filtering firewall to block inappropriate traffic to the network to prevent hosts from being compromised.
--
Contributors:
Original rule written by Max Vision <vision@whitehats.com>
Sourcefire Research Team
Nigel Houghton <nigel.houghton@sourcefire.com>
Judy Novak <judy.novak@sourcefire.com>
--
Additional References:
CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-0138
Arachnids:
http://www.whitehats.com/info/IDS183
--
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