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citrix-zeek-intel.rules
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# Sagan citrix-zeek-intel.rules
# Copyright (c) 2009-2023. Quadrant Information Security <www.quadrantsec.com>
# All rights reserved.
#
# Please submit any custom rules or ideas to [email protected] 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.
#
#*************************************************************
# Citrix applicances/devices/software
# Login from Bro Intel IP (Champ Clark / 04/01/2015)
alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[CITRIX-ZEEK-INTEL] Login from outside Bro Intel listed IP"; content: "SSLVPN LOGIN"; default_proto: tcp; default_dst_port: $HTTPS_PORT; classtype: unsuccessful-user; parse_src_ip: 1; parse_dst_ip: 2; zeek-intel: by_src; reference: url,support.citrix.com/article/CTX123875; sid: 5002262; rev:4;)
#alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[CITRIX-ZEEK-INTEL] AAA LOGIN_FAILED from Bro Intel listed IP"; content: "AAA LOGIN_FAILED"; default_proto: tcp; default_dst_port: $HTTPS_PORT; classtype: unsuccessful-user; parse_src_ip: 1; normalize; zeek-intel: by_src; reference: url,support.citrix.com/article/CTX123875; sid:5002282; rev:5;)
alert any $EXTERNAL_NET any -> $HOME_NET any (msg: "[CITRIX-ZEEK-INTEL] SSLVPN HTTPREQUEST from Bro Intel listed IP"; content: "SSLVPN HTTPREQUEST"; default_proto: tcp; default_dst_port: $HTTPS_PORT; classtype: unsuccessful-user; parse_src_ip: 1; normalize; zeek-intel: by_src; reference: url,support.citrix.com/article/CTX123875; sid:5002286; rev:6;)