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SID: 2017887 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 2Dec 20, 2013, 12:00 PM

ET HUNTING SUSPICIOUS SMTP EXE - ZIP file with .com filename inside

alert smtp $EXTERNAL_NET any -> $SMTP_SERVERS any (msg:"ET HUNTING SUSPICIOUS SMTP EXE - ZIP file with .com filename inside"; flow:established; content:"|0D 0A 0D 0A|UEsDB"; pcre:"/^[A-Za-z0-9\/\+\x0D\x0A]+?(uY29t|5jb2|LmNvb)/R"; classtype:bad-unknown; sid:2017887; rev:2; metadata:created_at 2013_12_20, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)

Dec 20, 2013, 12:00 PM

Jul 26, 2019, 12:00 PM

Sep 21, 2024, 3:00 AM

Dec 1, 2025, 11:34 PM

rules/emerging-hunting.rules