Question regarding Snort Rule 108 for Backdoor QAZ

[Austin Durbin <ADurbin () HawthorneSavings com>]

This afternoon I picked up a dozen Snort alerts for SID 108. I need some
help in understanding this alert. The triggered signature said Unknown
Datagram decoding problem. The documentation for SID 108 points to QAZ.

The payload off the offending packet had a length of 5 with a value of 00 00
00 00 45. If I understand the Signature, it is looking for content:|71 61 7a
77 73|. I don't quite understand how this packet payload would have
triggered the alert. I am rank beginner when It comes to Snort and would
dearly appreciate if someone could help me understand why I got this alert.

I have checked the actual box and there is no trace of QAZ and it would
appear to be a false alarm.




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