Rule History

SID: 2022640 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 2 • Mar 23, 2016, 12:00 PM

Message:

ET MALWARE PE EXE or DLL Windows file download Text M2

Rule:

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE PE EXE or DLL Windows file download Text M2"; flow:established,from_server; file_data; content:"4D5A"; nocase; within:4; content:"50450000"; distance:0; content:"21546869732070726f6772616d"; nocase; fast_pattern; classtype:trojan-activity; sid:2022640; rev:2; metadata:created_at 2016_03_23, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)

Created:

Mar 23, 2016, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Mar 23, 2016, 12:00 PM

DB Updated:

Oct 6, 2025, 4:34 PM

Filename:

rules/emerging-malware.rules