Rule History

SID: 2020441 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 4 • Feb 17, 2015, 12:00 PM

Message:

ET MALWARE Arid Viper APT Possible User-Agent (SK)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Arid Viper APT Possible User-Agent (SK)"; flow:established,to_server; http.header; content:"|0d 0a|REMOTE_USER|3a 20|"; http.user_agent; content:"SK"; nocase; fast_pattern; bsize:2; http.header_names; content:!"Referer|0d 0a|"; reference:url,trendmicro.com/cloud-content/us/pdfs/security-intelligence/white-papers/wp-operation-arid-viper.pdf; classtype:targeted-activity; sid:2020441; rev:4; metadata:created_at 2015_02_17, confidence Medium, signature_severity Major, updated_at 2020_09_29;)

Created:

Feb 17, 2015, 12:00 PM

Updated:

Sep 29, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

May 30, 2025, 12:04 AM

Filename:

rules/emerging-malware.rules