[Snort-users] Possible Cerber False Negative

Kevin Ross kevross33 at ...14012...
Wed Dec 7 10:38:39 EST 2016


Looking at rule 38885 I don't think it would hit messages like hi008c1030
which I see from Cerber analyis of sample md5

The reason being primarily that dsize is set to 9 in the rule when this is
10 bytes long in these payloads. Pcre regex sets the hex to {6} but this
would be fine without dsize although in this case it will be 7 rather than
6 bytes.

Kind Regards,
Kevin Ross
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