ET DELETED SiameseKitten/Lyceum/Hexane MSIL/Shark Response - 1 Byte XOR Key
Sourceet/open
CreatedAugust 22, 2021
UpdatedSeptember 8, 2021
Classificationcommand-and-control
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED SiameseKitten/Lyceum/Hexane MSIL/Shark Response - 1 Byte XOR Key"; flow:established,from_server; file.data; base64_decode:offset 0; base64_data; content:"|6e 4b 5e 4b|"; content:"|27 20|"; classtype:command-and-control; sid:2033761; rev:3; metadata:attack_target Client_Endpoint, created_at 2021_08_22, deployment Perimeter, deprecation_reason Performance, malware_family Shark, performance_impact Significant, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_08;)
Metadata
attack targetClient_Endpoint
created at2021_08_22
deploymentPerimeter
deprecation reasonPerformance
malware familyShark
performance impactSignificant
signature severityMajor
tagDescription_Generated_By_Proofpoint_Nexus
updated at2021_09_08
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