File: imapd-bluedot.rules

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# Sagan imapd-bluedot.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.
#
#*************************************************************


# 10.1.1.1|mail|info|info|16|2014-06-11|23:12:53|imapd-ssl| LOGIN, user=bob, ip=[192.168.8.1], port=[36938], protocol=IMAP

alert any $HOME_NET any -> $EXTERNAL_NET any (msg: "[IMAPD-BLUEDOT] Login from a suspicious source"; program: imapd*; content: "LOGIN,"; bluedot: type ip_reputation, track by_src, none, Malicious,Tor,Honeypot,Proxy; default_proto: tcp; default_dst_port: $IMAP_PORT; classtype: successful-user; parse_src_ip: 1; reference: url, wiki.quadrantsec.com/bin/view/Main/5002075; sid:5002075; rev:4;)

# 10.1.1.1|mail|info|info|16|2014-06-11|23:12:53|imapd-ssl| LOGOUT, user=bob, ip=[192.168.8.1], headers=0, body=0, rcvd=96, sent=470, time=0, starttls=1

alert any $HOME_NET any -> $EXTERNAL_NET any (msg: "[IMAPD-BLUEDOT] Logout from a suspicious source"; program: imapd*; content: "LOGOUT,"; bluedot: type ip_reputation, track by_src, none, Malicious,Tor,Honeypot,Proxy; default_proto: tcp; default_dst_port: $IMAP_PORT; classtype: successful-user; parse_src_ip: 1; reference: url, wiki.quadrantsec.com/bin/view/Main/5002076; sid:5002076; rev:4;)

# 10.1.1.1|mail|info|info|16|2014-06-12|04:06:34|imapd-ssl| TIMEOUT, user=bob, ip=[192.168.8.1], headers=714, body=8944, rcvd=1050, sent=15577, time=2701, starttls=1

alert any $HOME_NET any -> $EXTERNAL_NET any (msg: "[IMAPD-BLUEDOT] Timeout from a suspicious source"; program: imapd*; content: "TIMEOUT,"; bluedot: type ip_reputation, track by_src, none, Malicious,Tor,Honeypot,Proxy; default_proto: tcp; default_dst_port: $IMAP_PORT; classtype: successful-user; parse_src_ip: 1; reference: url, wiki.quadrantsec.com/bin/view/Main/5002077; sid:5002077; rev:4;)

# 10.1.1.1|mail|info|info|16|2014-06-11|23:53:51|imapd-ssl| DISCONNECTED, user=bob, ip=[192.168.8.1], headers=0, body=0, rcvd=357, sent=981, time=10511, starttls=1

alert any $HOME_NET any -> $EXTERNAL_NET any (msg: "[IMAPD-BLUEDOT] Disconnect from a suspicious source"; program: imapd*; content: "DISCONNECTED,"; bluedot: type ip_reputation, track by_src, none, Malicious,Tor,Honeypot,Proxy; default_proto: tcp; default_dst_port: $IMAP_PORT; classtype: successful-user; parse_src_ip: 1; reference: url, wiki.quadrantsec.com/bin/view/Main/5002078; sid:5002078; rev:34)

# 10.7.1.71|mail|debug|debug|17|2014-06-11|23:53:52|imapd-ssl| Connection, ip=[192.168.8.1]

# alert any $HOME_NET any -> $EXTERNAL_NET any (msg: "[IMAPD-BLUEDOT] Connection from a suspicious source"; program: imapd*; content: "Connection,"; bluedot: type ip_reputation, track by_src, none, Malicious,Tor,Honeypot,Proxy; default_proto: tcp; default_dst_port: $IMAP_PORT; classtype: successful-user; parse_src_ip: 1; reference: url, wiki.quadrantsec.com/bin/view/Main/5002079; sid:5002079; rev:4;)