Re: Snort SID Help 1:28039:5

[Vincent Zhen <vincent.zhen () nyu edu>]

snort.rules: alert udp $HOME_NET any -> any 53 (msg:"INDICATOR-COMPROMISE
Suspicious .pw dns query"; flow:to_server; content:!"|01|u|02|pw";
content:"|01 00 00 01 00 00 00 00 00 00|"; depth:10; offset:2;
content:"|02|pw|00|"; distance:0; fast_pattern; metadata:policy
balanced-ips alert, policy security-ips drop, service dns;
classtype:trojan-activity; sid:28039; rev:5;)

On Fri, Mar 11, 2016 at 10:04 AM, Matt Brichetto <
M_Brichetto () cuinterface com> wrote:

> Hello Fellow Snort Users,
>
>
>
> I get the following alert below on a LAN to LAN address. Everyone once and
> awhile we get this, but there seems to be no info on the rule. Has this
> rule been deprecated or something along those lines. I really don’t know
> how to troubleshoot this or if it is a false positive.
>
>
>
>
>
>
>
>
>
> EVENT # :
>
> 172511
>
> EVENTLOG :
>
> Application
>
> *EVENT TYPE :*
>
> *WARNING (2)*
>
> SOURCE :
>
> snort
>
> EVENT ID :
>
> 1
>
> TIME :
>
> 3/11/2016 9:25:55 AM
>
> MESSAGE :
>
> [1:28039:5] INDICATOR-COMPROMISE Suspicious .pw dns query [Classification:
> A Network Trojan was Detected] [Priority: 1] {UDP} 192.168.22.16:17159 ->
> 192.168.22.4:53
>
>
>
>
>
> Thanks,
>
>
>
> *Matt Brichetto*
> Network Administrator
>
>
>
>
>
>   ­­
>
>
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-- 
Vincent Zhen
Network Security Analyst, NYU Technology Security Services
New York University
726 Broadway, New York, NY 10003

------------------------------------------------------------------------------
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Accelerate data analysis in your applications with
Intel Data Analytics Acceleration Library.
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