Rule History

SID: 2017362 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 4 • Aug 21, 2013, 12:00 PM

Message:

ET MALWARE Win32/Napolar.A Getting URL

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Napolar.A Getting URL"; flow:established,to_server; http.method; content:"GET"; http.user_agent; bsize:108; content:"Mozilla/5.0 (Windows NT 6.1|3b| WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.71 Safari/537.36"; fast_pattern; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; content:!"|0d 0a|Accept|0d 0a|"; content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|"; startswith; reference:md5,9a8cee88d7440f25be8404b71cb584de; reference:md5,b70f8d0afa82c222f55f7a18d2ad0b81; classtype:trojan-activity; sid:2017362; rev:4; metadata:created_at 2013_08_21, malware_family Win32_Napolar_A, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_12;)

Created:

Aug 21, 2013, 12:00 PM

Updated:

Mar 12, 2024, 12:00 PM

DB Created:

Aug 21, 2013, 12:00 PM

DB Updated:

Nov 20, 2025, 10:34 PM

Filename:

rules/emerging-malware.rules