-
Notifications
You must be signed in to change notification settings - Fork 18
/
experimental.rules
37 lines (37 loc) · 4.49 KB
/
experimental.rules
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
#*************************************************************
# Copyright (c) 2003-2015, Emerging Threats
# All rights reserved.
#
# 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 are experimental rules using a combination of Lua and the "xbits" feature included in Suricata 2.1beta and later
#
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPERIMENTAL Flash file download (CWS)"; flow:established,from_server; file_data; content:"CWS"; within:3; xbits:set,ET.pluginfile,track ip_pair, expire 120; flowbits:noalert; classtype:bad-unknown; sid:380000001; rev:1;)
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPERIMENTAL Flash file download (ZWS)"; flow:established,from_server; file_data; content:"ZWS"; within:3; xbits:set,ET.pluginfile,track ip_pair, expire 120; flowbits:noalert; classtype:bad-unknown; sid:380000002; rev:1;)
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPERIMENTAL Possible SilverLight file download"; flow:established,from_server; file_data; content:"PK"; within:2; content:"AppManifest.xaml"; nocase; xbits:set,ET.pluginfile,track ip_pair, expire 120; flowbits:noalert; classtype:bad-unknown; sid:380000003; rev:1;)
#
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPERIMENTAL download with minimal headers after plugin file download (1)"; flow:to_server,established; content:!"Referer|3a|"; http_header; content:!"Accept|3a|"; http_header; xbits:isset,ET.pluginfile,track ip_pair; classtype:bad-unknown; sid:380000010; rev:1;)
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPERIMENTAL download with minimal headers after plugin file download (2)"; flow:to_server,established; content:!"User-Agent|3a|"; http_header; content:!"Referer|3a|"; http_header; xbits:isset,ET.pluginfile,track ip_pair; classtype:bad-unknown; sid:380000011; rev:1;)
#
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPERIMENTAL (data) download with high entropy after plugin file download"; flow:from_server,established; filesize:>10240; filemagic:"data"; filemagic:!" data"; xbits:isset,ET.pluginfile,track ip_pair; luajit:suri-high-entropy.lua; classtype:bad-unknown; sid:380000015; rev:1;)
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPERIMENTAL (data) download with high entropy from dotted-quad host"; flow:from_server,established; filesize:>10240; filemagic:"data"; filemagic:!" data"; flowbits:isset,http.dottedquadhost; luajit:suri-high-entropy.lua; classtype:bad-unknown; sid:380000016; rev:1;)
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPERIMENTAL XORed binary after plugin file download"; flow:from_server,established; file_data; content:!"MZ"; within:2; xbits:isset,ET.pluginfile,track ip_pair; luajit:suri-xor-binary-quick.lua; classtype:bad-unknown; sid:380000017; rev:1;)
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPERIMENTAL PE EXE or DLL binary after plugin file download"; flow:from_server,established; flowbits:isset,ET.http.binary; xbits:isset,ET.pluginfile,track ip_pair; threshold: type both, count 1, seconds 120, track by_src; classtype:bad-unknown; sid:380000018; rev:1;)