title: How to determine the process which is sending out icmp ping request under windows
body: <p>By WireSharking the network traffic, I'm finding out my PC is sending out ICMP echo request to a suspicious ip address while I'm not running ping.exe explicitly. There must be some process doing this. And I want to find it out.</p>
  
  <p>I've looked at the identitier field of the outgoing ICMP packet, but haven't found any clue. (All packet's id field value is 0x200, unlikely under *NIX system, this field is fill with the initiator's pid).</p>
  
  <p>I've also used Process Explorer to locate processes which are using icmp.dll, but nothing found.</p>
  
  <p>The running operating system is Windows XP Service Pack 2.</p>
  
  <p>I'll be appreciated if someone helps me out, thanks.</p>