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nfcapd.rules
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nfcapd.rules
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# Sagan nfcapd.rules
# Copyright (c) 2009-2015, 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.
#
##############################################################################
# These rules are intended to catch malware via the NetFlow protocol. This
# requires that your system has "nfdump" tools install. In particular, the
# Quadrant modified "nfdump", that allows the program "nfcapd" to receive
# decode and send to the Sagan FIFO Netflow data.
#
# For more information see:
#
# https://wiki.quadrantsec.com/twiki/bin/view/Main/SaganNetflow
# Example log string sent to the FIFO from the modified "nfcapd":
# source_ip: 10.10.0.1/80, destination_ip: 173.165.207.65/16464, protocol: UDP, duration: 5.400, flags: |.AP.SF|, tos: 0, packets: 312, bytes: 4222451716, last_time: 2013-11-30 01:10:24, vlan_src: 32767, vlan_dst: 0
# Possible IRC traffic
alert tcp $HOME_NET any -> $EXTERNAL_NET 6667 (msg: "[NFCAPD] Possible IRC detected [5/5]"; program: nfcapd; content: "/6667, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001984; sid: 5001984; rev: 2;)
# 6697 - IRC over SSL
alert tcp $HOME_NET any -> $EXTERNAL_NET 6697 (msg: "[NFCAPD] Possible IRC over SSL detected [5/5]"; program: nfcapd; content: "/6697, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001985; sid: 5001985; rev: 3;)
# 6660-6669, 7000
alert tcp $HOME_NET any -> $EXTERNAL_NET 6660 (msg: "[NFCAPD] Possible IRC - Port 6660 [5/5]"; program: nfcapd; content: "/6660, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001986; sid: 5001986; rev: 2;)
alert tcp $HOME_NET any -> $EXTERNAL_NET 6661 (msg: "[NFCAPD] Possible IRC - Port 6661 [5/5]"; program: nfcapd; content: "/6661, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001987; sid: 5001987; rev: 2;)
alert tcp $HOME_NET any -> $EXTERNAL_NET 6662 (msg: "[NFCAPD] Possible IRC - Port 6662 [5/5]"; program: nfcapd; content: "/6662, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001988; sid: 5001988; rev: 2;)
alert tcp $HOME_NET any -> $EXTERNAL_NET 6663 (msg: "[NFCAPD] Possible IRC - Port 6663 [5/5]"; program: nfcapd; content: "/6663, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001989; sid: 5001989; rev: 2;)
alert tcp $HOME_NET any -> $EXTERNAL_NET 6664 (msg: "[NFCAPD] Possible IRC - Port 6664 [5/5]"; program: nfcapd; content: "/6664, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001990; sid: 5001990; rev: 2;)
alert tcp $HOME_NET any -> $EXTERNAL_NET 6665 (msg: "[NFCAPD] Possible IRC - Port 6665 [5/5]"; program: nfcapd; content: "/6665, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001991; sid: 5001991; rev: 2;)
alert tcp $HOME_NET any -> $EXTERNAL_NET 6666 (msg: "[NFCAPD] Possible IRC - Port 6666 [5/5]"; program: nfcapd; content: "/6666, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001992; sid: 5001992; rev: 2;)
alert tcp $HOME_NET any -> $EXTERNAL_NET 6998 (msg: "[NFCAPD] Possible IRC - Port 6668 [5/5]"; program: nfcapd; content: "/6668, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001993; sid: 5001993; rev: 2;)
alert tcp $HOME_NET any -> $EXTERNAL_NET 6999 (msg: "[NFCAPD] Possible IRC - Port 6669 [5/5]"; program: nfcapd; content: "/6669, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001994; sid: 5001994; rev: 2;)
alert tcp $HOME_NET any -> $EXTERNAL_NET 7000 (msg: "[NFCAPD] Possible IRC - Port 7000 [5/5]"; program: nfcapd; content: "/7000, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001995; sid: 5001995; rev: 2;)
# SSH
alert tcp $HOME_NET any -> $EXTERNAL_NET 22 (msg: "[NFCAPD] SSH Traffic Detected [5/5]"; program: nfcapd; content: "/22, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001996; sid: 5001996; rev: 2;)
alert tcp $HOME_NET any -> $EXTERNAL_NET 2222 (msg: "[NFCAPD] Possible SSH Traffic Detected - Port 2222 [5/5]"; program: nfcapd; content: "/2222, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001997; sid: 5001997; rev: 2;)
# Telnet
alert tcp $HOME_NET any -> $EXTERNAL_NET 23 (msg: "[NFCAPD] Telnet Traffic Detected [5/5]"; program: nfcapd; content: "/23, protocol|3a| TCP,"; classtype: suspicious-traffic; parse_src_ip: 1; parse_dst_ip: 2; parse_port; threshold: type limit, track by_src, count 5, seconds 120; after: track by_src, count 5, seconds 300; reference: url, wiki.quadrantsec.com/bin/view/Main/5001998; sid: 5001998; rev: 2;)