A specific site received 91 ICMP_ECHO packets within 90 minutes from 47 different sites. 77 of the ICMP_ECHO packets had an ICMP ID:39612 and Seq:57072. 13 of the ICMP_ECHO packets had an ICMP ID:0…

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Options

• AThe packets were sent by a worm spoofing the IP addresses of 47 infected sites
• BICMP ID and Seq numbers were most likely set by a tool and not by the operating system
• CAll 77 packets came from the same LAN segment and hence had the same ICMP ID and Seq number
• D13 packets were from an external network and probably behind a NAT, as they had an ICMP ID 0

• A
  4% (2)
• B
  82% (40)
• C
  4% (2)
• D
  10% (5)

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