Rule History

SID: 2019930 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 1 • Dec 13, 2014, 12:00 PM

Message:

ET MALWARE Possible Net Crawler SMB Share Access ascii (Operation Cleaver)

Rule:

alert tcp any any -> any [139,445] (msg:"ET MALWARE Possible Net Crawler SMB Share Access ascii (Operation Cleaver)"; flow:established,to_server; content:"|FF|SMB"; offset:4; depth:4; byte_test:1,&,0x80,6,relative; content:"_AutoShare$"; distance:0; reference:md5,8994e16b14cde144a9cebdff685d8676; reference:url,www0.cylance.com/assets/Cleaver/Cylance_Operation_Cleaver_Report.pdf; classtype:trojan-activity; sid:2019930; rev:1; metadata:created_at 2014_12_13, confidence Medium, signature_severity Major, updated_at 2019_07_26;)

Created:

Dec 13, 2014, 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