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alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET INFO Suspicious Windows NT version 8 User-Agent"; flow: established,to_server; content:"Windows NT 8"; nocase; http_header; fast_pattern:only; pcre:"/^User-Agent\x3a[^\r\n]+Windows NT 8/Hmi"; classtype:trojan-activity; sid:2015821; rev:1;)

Added 2012-10-19 17:25:52 UTC

We have seen a number of FPs on this related to Nokia Phones. An example stings is below:

User-Agent: Mozilla/5.0 (compatible; MSIE 10.0; Microsoft Windows NT 8.0.10517.0; Trident/6.0; ARM; Touch; IEMobile/10.0; NOKIA; RM-915_nam_usa_228 IOAM/1.0)

-- JohnIves - 2014-03-06

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Topic revision: r2 - 2014-03-06 - JohnIves
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