-
Notifications
You must be signed in to change notification settings - Fork 35
/
Copy pathcrowdstrike.rules
45 lines (35 loc) · 4.33 KB
/
crowdstrike.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
38
39
40
41
42
43
44
# Sagan crowdstrike.rules
# Copyright (c) 2009-2020. 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.
#
#*************************************************************
alert any $HOME_NET any -> $EXTERNAL_NET any (msg:"[CROWDSTRIKE] CrowdStrike High Severity Event Reported "; content: "DetectionSummaryEvent"; nocase; content: "SeverityName=|22|High"; nocase; parse_src_ip:1; classtype:exploit-attempt; reference: url,wiki.quadrantsec.com/bin/view/Main/5004756; sid:5004756; rev:1;)
alert any $HOME_NET any -> $EXTERNAL_NET any (msg:"[CROWDSTRIKE] CrowdStrike Critical Severity Event Reported "; content: "DetectionSummaryEvent"; nocase; content: "SeverityName=|22|Critical"; nocase; content: !"BullPlugin.exe"; nocase; parse_src_ip:1; classtype:suspicious-traffic; reference: url,wiki.quadrantsec.com/bin/view/Main/5004757; sid:5004757; rev:1;)
alert any $HOME_NET any -> $EXTERNAL_NET any (msg:"[CROWDSTRIKE] CrowdStrike Low Severity Event Reported "; content: "DetectionSummaryEvent"; nocase; content: "SeverityName=|22|Low"; nocase; content:!"BullPlugin"; nocase; parse_src_ip:1; classtype:exploit-attempt; reference: url,wiki.quadrantsec.com/bin/view/Main/5004758; sid:5004758; rev:1;)
alert any $HOME_NET any -> $EXTERNAL_NET any (msg:"[CROWDSTRIKE] CrowdStrike Medium Severity Event Reported "; content: "DetectionSummaryEvent"; nocase; content: "SeverityName=|22|Medium"; nocase; parse_src_ip:1; classtype:suspicious-traffic; reference: url,wiki.quadrantsec.com/bin/view/Main/5004759; sid:5004759; rev:1;)
# Added by Joseph Suain @ Quadrant (2020/11/10)
alert any $HOME_NET any -> $EXTERNAL_NET any (msg:"[CROWDSTRIKE] CrowdStrike Remote Response Session Start Event Reported"; content: "RemoteResponseSessionStartEvent"; nocase; parse_src_ip:1; classtype:suspicious-traffic; reference: url,wiki.quadrantsec.com/bin/view/Main/5004785; sid:5004785; rev:1;)
alert any $HOME_NET any -> $EXTERNAL_NET any (msg:"[CROWDSTRIKE] CrowdStrike Remote Response Session End Event Reported"; content: "RemoteResponseSessionEndEvent"; nocase; parse_src_ip:1; classtype:suspicious-traffic; reference: url,wiki.quadrantsec.com/bin/view/Main/5004786; sid:5004786; rev:1;)
alert any $HOME_NET any -> $EXTERNAL_NET any (msg:"[CROWDSTRIKE] CrowdStrike Quarantine Files in Detection Summary Event reported"; content: "Quarantined Files In A Detection Summary Event"; nocase; parse_src_ip:1; classtype:suspicious-traffic; reference: url,wiki.quadrantsec.com/bin/view/Main/5005232; sid:5005232; rev:1;)
alert any $HOME_NET any -> $EXTERNAL_NET any (msg:"[CROWDSTRIKE] CrowdStrike Detection Summary Event Reported"; content: "DetectionSummaryEvent"; nocase; parse_src_ip:1; classtype:suspicious-traffic; reference: url,wiki.quadrantsec.com/bin/view/Main/5005233; sid:5005233; rev:1;)