ET MALWARE Observed DNS Query to XWorm Payload Delivery Domain
Sourceet/open
CreatedDecember 26, 2025
UpdatedDecember 26, 2025
Classificationtrojan-activity
alert dns $HOME_NET any -> any any (msg:"ET MALWARE Observed DNS Query to XWorm Payload Delivery Domain"; dns.query; bsize:49; content:"09c1d5c3-1a6e-4c05-8e4e-eff75c6b5dd6.usrfiles.com"; nocase; reference:md5,c1961e2c5b2e2dc6c431723ec26ce5ba; classtype:trojan-activity; sid:2066473; rev:1; metadata:attack_target Client_Endpoint, created_at 2025_12_26, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_12_26;)
References
| md5 | c1961e2c5b2e2dc6c431723ec26ce5ba |
Metadata
attack targetClient_Endpoint
created at2025_12_26
deploymentPerimeter
confidenceHigh
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2025_12_26
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