ET VOIP Possible Modified Sipvicious OPTIONS Scan

Query · suricata

content:"OPTIONS "; depth:8;
content:"ccxllrlflgig|22|<sip|3A|100"; nocase; distance:0;
Raw source ET VOIP Possible Modified Sipvicious OPTIONS Scan · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert udp $EXTERNAL_NET any -> $HOME_NET 5060 (
    msg:"ET VOIP Possible Modified Sipvicious OPTIONS Scan";
    content:"OPTIONS "; depth:8;
    content:"ccxllrlflgig|22|<sip|3A|100"; nocase; distance:0;
    reference:url,code.google.com/p/sipvicious/;
    reference:url,blog.sipvicious.org/;
    classtype:attempted-recon;
    sid:2011422; rev:2;
    metadata:created_at 2010_09_28, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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