File: windows-owa-geoip.rules

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# Sagan windows-owa-geoip.rules
# Copyright (c) 2009-2016, Quadrant Information Security <www.quadrantsec.com>
# All rights reserved.
#
# Please submit any custom rules or ideas to sagan-submit@quadrantsec.com or the sagan-sigs mailing list
#
#*************************************************************
#  Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
#  following conditions are met:
#
#  * Redistributions of source code must retain the above copyright notice, this list of conditions and the following
#    disclaimer.
#  * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
#    following disclaimer in the documentation and/or other materials provided with the distribution.
#  * Neither the name of the nor the names of its contributors may be used to endorse or promote products derived
#    from this software without specific prior written permission.
#
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES,
#  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
#  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
#  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
#  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

# 10.1.2.1|user|notice|notice|0d|2015-04-23|00:39:14|SERVER.local  IISWebLog       0       2015-04-23| 00:31:33 10.1.2.1 POST /ews/exchange.asmx - 443 - 12.12.12.12 MS-WebServices/1.0 - - 401 0 0 0  

alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTPS_PORT (msg: "[WINDOWS-OWA-GEOIP] Login failure - Brute force [5/5]"; content: "/ews/exchange.asmx"; nocase; country_code: track by_src, isnot $HOME_COUNTRY; classtype: suspicious-traffic; fwsam: src, 1 day; parse_src_ip: 1; parse_dst_ip: 2; reference: url,wiki.quadrantsec.com/bin/view/Main/5002265; sid: 5002265; rev:1;)