GEN:SID | 1:249 |
Message | DDOS mstream client to handler |
Summary | The event is generated when a DDoS mstream client makes contact with an mstream handler.
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Impact | Severe. If the listed source IP is in your network, it is possibly an mstream client. If the listed destination IP is in your network, it is possibly an mstream handler.
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Detailed Information | The mstream DDoS uses a tiered structure of compromised hosts to coordinate and participate in a distributed denial of service attack. At the highest level, clients communicate with handlers to inform them to launch attacks. A client may contact a handler using a TCP SYN packet to destination port 15104.
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Affected Systems | Any mstream compromised host.
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Attack Scenarios | After a host becomes an mstream handler, the client will attempt to communicate with the handler.
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Ease of Attack | Simple. mstream code is freely available.
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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.
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Additional References | CVE: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-0138
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Rule References | cve: 2000-0138
arachnids: 111
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