ET MALWARE Observed DNS Query to DefendNot Domain (dnot .sh)
Sourceet/open
CreatedMarch 6, 2026
UpdatedMarch 6, 2026
Classificationtrojan-activity
alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed DNS Query to DefendNot Domain (dnot .sh)"; dns.query; dotprefix; content:".dnot.sh"; nocase; endswith; reference:url,github.com/es3n1n/defendnot; classtype:trojan-activity; sid:2068055; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_03_06, deployment Perimeter, malware_family DefendNot, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_03_06;)
References
Metadata
attack targetClient_Endpoint
created at2026_03_06
deploymentPerimeter
malware familyDefendNot
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2026_03_06
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