My computer is sending ICMP packets to arbitrary destinations. I can't understand the reason. Dump of one of the packet is :
Internet Control Message Protocol
Type: 3 (Destination unreachable)
Code: 3 (Port unreachable)
Checksum: 0x811b [correct]
Internet Protocol, Src: 80.167.113.76 (80.167.113.76), Dst: 192.168.1.2 (192.168.1.2)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 131
Identification: 0x0631 (1585)
Flags: 0x00
0... .... = Reserved bit: Not set
.0.. .... = Don't fragment: Not set
..0. .... = More fragments: Not set
Fragment offset: 0
Time to live: 111
Protocol: UDP (17)
Header checksum: 0xc19b [correct]
[Good: True]
[Bad: False]
Source: 80.167.113.76 (80.167.113.76)
Destination: 192.168.1.2 (192.168.1.2)
User Datagram Protocol, Src Port: 61846 (61846), Dst Port: 25660 (25660)
Source port: 61846 (61846)
Destination port: 25660 (25660)
Length: 111
Checksum: 0x4b45 [validation disabled]
[Good Checksum: False]
[Bad Checksum: False]
Data (103 bytes)
Data: 64313a6164323a696432303abe916abba14b8cb8a7167ce0...
What is meant by these arbitrary ICMP packets? I am afraid of rootkit. Kindly help.
operating system : windows 7 ultimate