ET MALWARE Quad7 Botnet - Outbound zylogin Telnet Prompt from Compromised Endpoint - Suricata Rule 2064294 (et/open)

ET MALWARE Quad7 Botnet - Outbound zylogin Telnet Prompt from Compromised Endpoint

SID: 2064294Rev: 13 viewsHistory

Sourceet/open

CreatedSeptember 4, 2025

UpdatedSeptember 4, 2025

Classificationtrojan-activity

alert tcp $HOME_NET 3256 -> any any (msg:"ET MALWARE Quad7 Botnet - Outbound zylogin Telnet Prompt from Compromised Endpoint"; flow:established,to_client; content:"zylogin|3a|"; fast_pattern; startswith; reference:url,blog.sekoia.io/a-glimpse-into-the-quad7-operators-next-moves-and-associated-botnets/; classtype:trojan-activity; sid:2064294; rev:1; metadata:attack_target Networking_Equipment, tls_state plaintext, created_at 2025_09_04, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_09_04; target:src_ip;)

References

url	blog.sekoia.io/a-glimpse-into-the-quad7-operators-next-moves-and-associated-botnets/

Metadata

attack targetNetworking_Equipment

tls stateplaintext

created at2025_09_04

deploymentPerimeter

performance impactLow

confidenceHigh

signature severityMajor

tagDescription_Generated_By_Proofpoint_Nexus

updated at2025_09_04

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