Rule History

SID: 2035061 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 3 • Jan 16, 2020, 12:00 PM

Message:

ET MALWARE Group 21 Payload CnC Checkin

Rule:

alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Group 21 Payload CnC Checkin"; flow:established,to_server; dsize:<400; content:"|3a 3a|MAC|3a 3a|"; startswith; content:"|3a 3a|HOSTNAME/USERNAME|3a 3a|"; within:100; fast_pattern; content:"|3a 3a|U-FILE|3a 3a|"; within:100; reference:md5,6a271282fe97322d49e9692891332ad7; classtype:trojan-activity; sid:2035061; rev:3; metadata:created_at 2020_01_16, confidence High, signature_severity Major, updated_at 2020_08_19;)

Created:

Jan 16, 2020, 12:00 PM

Updated:

Aug 19, 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