Rule History

SID: 2020957 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 2 • Apr 21, 2015, 12:00 PM

Message:

ET MALWARE Windows nbtstat -s Microsoft Windows DOS prompt command exit OUTBOUND

Rule:

alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Windows nbtstat -s Microsoft Windows DOS prompt command exit OUTBOUND"; flow:established,to_server; content:"NetBIOS Connection Table"; fast_pattern; content:"Local Name"; distance:0; content:"State"; distance:0; content:"In/Out"; distance:0; content:"Remote Host"; distance:0; content:"Input"; distance:0; content:"Output"; distance:0; classtype:trojan-activity; sid:2020957; rev:2; metadata:created_at 2015_04_21, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)

Created:

Apr 21, 2015, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Apr 21, 2015, 12:00 PM

DB Updated:

Oct 21, 2025, 10:35 PM

Filename:

rules/emerging-malware.rules