ET MALWARE JS ZimReaper C2 DNS-label pixel Exfiltration over HTTP

7.0.3 5.0SID: 2071246Rev: 1Enabled11 viewsHistory

Fileemerging-malware.rules

CreatedJuly 21, 2026

UpdatedJuly 21, 2026

Classificationtrojan-activity

alert http [$HOME_NET,$SMTP_SERVERS] any -> any any (msg:"ET MALWARE JS ZimReaper C2 DNS-label pixel Exfiltration over HTTP"; reference:url,www.proofpoint.com/us/blog/threat-insight/ta488-targets-zimbra-mailservers-half-click-exploits; classtype:trojan-activity; sid:2071246; rev:1; metadata:attack_target Client_Endpoint, created_at 2026_07_21, deployment Perimeter, malware_family ZimReaper, confidence High, signature_severity Major, tag c2, updated_at 2026_07_21, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1048, mitre_technique_name Exfiltration_Over_Alternative_Protocol;)

Detection details are hidden.

References

url	www.proofpoint.com/us/blog/threat-insight/ta488-targets-zimbra-mailservers-half-click-exploits

Metadata

attack targetClient_Endpoint

created at2026_07_21

deploymentPerimeter

malware familyZimReaper

confidenceHigh

signature severityMajor

tagc2

updated at2026_07_21

mitre tactic idTA0010

mitre tactic nameExfiltration

mitre technique idT1048

mitre technique nameExfiltration_Over_Alternative_Protocol

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