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| GEN:SID | 1:241 |
| Message | DDOS shaft synflood |
| Summary | This event is generated when a DDoS Shaft handler agent launchs a SYN flood against a target. |
| Impact | Attempted DDoS. If the listed source IP is in your network, it may be a Shaft agent. If the listed destination IP is in your network, your host may be a target of a DDoS SYN flood. |
| Detailed Information | The Shaft DDoS uses a tiered structure of compromised hosts to coordinate and participate in a distributed denial of service attack. Agents are hosts that are directed to launch attacks. One type of attack that may be launched is a SYN flood of a target. The SYN packets have a telltale initial sequence number of 674711609. |
| Affected Systems | Any Shaft compromised host. |
| Attack Scenarios | A Shaft agent may attack a target using a SYN flood. |
| Ease of Attack | Simple. Shaft 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 | Arachnids: http://www.whitehats.com/info/IDS253 Miscellaneous: http://biocserver.cwru.edu/~jose/shaft_analysis/ |
| Rule References | arachnids: 253 cve: 2000-0138 |
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DID:461745
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