Rule History

SID: 2049394 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1 • Nov 29, 2023, 12:00 PM

Message:

ET MALWARE Marai Variant Activity (Inbound)

Rule:

alert tcp-pkt $EXTERNAL_NET 1024: -> $HOME_NET any (msg:"ET MALWARE Marai Variant Activity (Inbound)"; flow:established,to_client; dsize:21; content:"|00 15 00 00 00 3c 0a 01 d1 de 72 00 18 01 07 05 32 35 35 36 35|"; fast_pattern; reference:md5,6f413d0c340d75ed0d97d5e430bae3ea; reference:md5,63bf76c58d2d895d01d3fd5e39c597aa; reference:url,www.akamai.com/blog/security-research/new-rce-botnet-spreads-mirai-via-zero-days; classtype:trojan-activity; sid:2049394; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_11_29, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_29; target:dest_ip;)

Created:

Nov 29, 2023, 12:00 PM

Updated:

Nov 29, 2023, 12:00 PM

DB Created:

Nov 29, 2023, 10:00 PM

DB Updated:

Aug 18, 2025, 8:35 PM

Filename:

rules/emerging-malware.rules