File: nfcapd-malware.rules

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# Sagan nfcapd-malware.rules
# Copyright (c) 2009-2017, 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.
#
##############################################################################
# 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

#alert any $HOME_NET any -> $EXTERNAL_NET 16464 (msg: "[NFCAPD-MALWARE] Netflow - ZeroAccess UDP port 16464 detected [5/5]"; program: nfcapd; normalize; content: " UDP,"; content: "/16464, p"; default_proto: udp; default_dst_port: 16464; 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/5001853; sid: 5001853; rev:6;)
#alert any $HOME_NET any -> $EXTERNAL_NET 16465 (msg: "[NFCAPD-MALWARE] Netflow - ZeroAccess UDP port 16465 detected [5/5]"; program: nfcapd; normalize; content: " UDP,"; content: "/16465, p"; default_proto: udp; default_dst_port: 16465; 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/5001854; sid: 5001854; rev:6;)
#alert any $HOME_NET any -> $EXTERNAL_NET 16470 (msg: "[NFCAPD] Netflow - ZeroAccess UDP port 16470 detected [5/5]"; program: nfcapd; normalize; content: " UDP,"; content: "/16470, p"; default_proto: udp; default_dst_port: 16470; 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/5001855; sid: 5001855; rev:5;)
#alert any $HOME_NET any -> $EXTERNAL_NET 16471 (msg: "[NFCAPD-MALWARE] Netflow - ZeroAccess UDP port 16471 detected [5/5]"; program: nfcapd; normalize; content: " UDP,"; content: "/16471, p"; default_proto: udp; default_dst_port: 16471; 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/5001856; sid: 5001856; rev:6;)

# Older TCP port 13620 (pre-Q2 2012)

#alert any $HOME_NET any -> $EXTERNAL_NET any (msg: "[NFCAPD-MALWARE] Netflow - Old ZeroAccess TCP port 13620 detected [5/5]"; program: nfcapd; normalize; content: " TCP,"; content: "/13620, p"; default_proto: tcp; default_dst_port: 13620; 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/5001857; sid: 5001857; rev: 5;)