Rule History

SID: 2027048 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 2 • Mar 6, 2019, 12:00 PM

Message:

ET MALWARE Py/MechaFlounder CnC Activity - Reporting Sleep Command Success

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Py/MechaFlounder CnC Activity - Reporting Sleep Command Success"; flow:established,to_server; content:!"HTTP|2f|"; content:"2A2A72756E74696D65206368616E67656420746F2072756E74696D65"; fast_pattern; reference:url,unit42.paloaltonetworks.com/new-python-based-payload-mechaflounder-used-by-chafer/; classtype:command-and-control; sid:2027048; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2019_03_06, deployment Perimeter, malware_family MechaFlounder, performance_impact Low, confidence High, signature_severity Major, tag APT, tag Chafer, tag Python, updated_at 2019_07_26;)

Created:

Mar 6, 2019, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

May 30, 2025, 12:04 AM

Filename:

rules/emerging-malware.rules