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| GEN:SID | 1:247 |
| Message | DDOS mstream client to handler |
| Summary | This event is generated when an mstream DDoS client communicates with a handler. |
| Impact | Severe. If the listed source IP is in your network, it may be an mstream client. If the listed destination IP is in your network, it may be an mstream handler. |
| 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 communicate with a handler using a TCP packet to destination port 12754 with a string of ">" in the payload. |
| Affected Systems | Any mstream compromised host. |
| Attack Scenarios | After a host becomes an mstream client, it will attempt to communicate with handlers. |
| Ease of Attack | Simple. mstream code is freely available. |
| 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. |
| Additional References | CVE: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-0138 |
| Rule References | cve: 2000-0138 |
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DID:483030
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