Rule History

SID: 2038821 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1 • Sep 13, 2022, 12:00 PM

Message:

ET MALWARE Powershell/PowHeartBeat CnC Checkin - ICMP

Rule:

alert icmp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Powershell/PowHeartBeat CnC Checkin - ICMP"; dsize:32; itype:8; content:"|3b 1d 41 1d|"; startswith; fast_pattern; content:"abcdefghijklmnopqrstuvwxyz"; distance:2; reference:url,www.welivesecurity.com/2022/09/06/worok-big-picture/; classtype:trojan-activity; sid:2038821; rev:1; metadata:attack_target Client_and_Server, created_at 2022_09_13, deployment Perimeter, malware_family PowerShell_PowHeartBeat, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_13;)

Created:

Sep 13, 2022, 12:00 PM

Updated:

Sep 13, 2022, 12:00 PM

DB Created:

Sep 13, 2022, 11:00 PM

DB Updated:

Sep 1, 2025, 8:35 PM

Filename:

rules/emerging-malware.rules