🐾 - 🚨 Suspicious TCP Keep-Alive ACK from external server - 🥷 Possible QuasarRAT 🪟 C2 activity - TA0011 - Suricata Rule 3321407 (pawpatrules)

🐾 - 🚨 Suspicious TCP Keep-Alive ACK from external server - 🥷 Possible QuasarRAT 🪟 C2 activity - TA0011

SID: 3321407Rev: 4Enabled61 views

FilePAW-PATRULES_MALWARES.rules

CreatedJanuary 3, 2025

UpdatedJanuary 4, 2025

Classificationcommand-and-control

alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"🐾 - 🚨 Suspicious TCP Keep-Alive ACK from external server - 🥷 Possible QuasarRAT 🪟 C2 activity - TA0011"; flow:to_client, stateless; tcp.flags:A,FSRPUCE; window:8192; reference:url,https://attack.mitre.org/tactics/TA0011/; reference:url,https://malpedia.caad.fkie.fraunhofer.de/details/win.quasar_rat; metadata:attack_target Client_and_Server, signature_severity Major, affected_product Windows_XP_Vista_7_8_10_11_Server_32_64_Bit, mitre_tactic_id TA0011, mitre_tactic_name Command_and_Control, former_category MALWARE, malware_family QuasarRAT, created_at 2025_01_04, updated_at 2025_01_04; sid:3321407; rev:4; classtype:command-and-control; noalert;)

References

url	https://attack.mitre.org/tactics/TA0011/
url	https://malpedia.caad.fkie.fraunhofer.de/details/win.quasar_rat

Metadata

attack targetClient_and_Server

signature severityMajor

affected productWindows_XP_Vista_7_8_10_11_Server_32_64_Bit

mitre tactic idTA0011

mitre tactic nameCommand_and_Control

former categoryMALWARE

malware familyQuasarRAT

created at2025_01_04

updated at2025_01_04

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