ET DELETED Hostile Microsoft Rich Text File (RTF) with corrupted listoverride

Query · suricata

flow:from_server,established;
flowbits:set,ETPRO.RTF;
content:"|7b 5c 2a 5c|listoverridetable";
content:"|5c|listoverride|5c|"; fast_pattern:only;
pcre:"/\x5clistoverride\x5c((?!\x5cls\d{1,4}\s*\}).)+?\x5clistoverride\x5c/s";

Rule dependencies

Feeds into

Raw source ET DELETED Hostile Microsoft Rich Text File (RTF) with corrupted listoverride · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
#alert http $EXTERNAL_NET any -> $HOME_NET any (
#    msg:"ET DELETED Hostile Microsoft Rich Text File (RTF) with corrupted listoverride";
#    flow:from_server,established;
#    flowbits:set,ETPRO.RTF;
#    content:"|7b 5c 2a 5c|listoverridetable";
#    content:"|5c|listoverride|5c|"; fast_pattern:only;
#    pcre:"/\x5clistoverride\x5c((?!\x5cls\d{1,4}\s*\}).)+?\x5clistoverride\x5c/s";
#    reference:cve,2012-0183;
#    classtype:attempted-user;
#    sid:2039511; rev:3;
#    metadata:created_at 2017_11_29, signature_severity Unknown, updated_at 2022_10_24;
#)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.