ET INFO Base64 Encoded powershell.exe in HTTP Response M1

7.0.35.0SID: 2025238Rev: 5Enabled2 views
Sourceet/open
Fileemerging-info.rules
CreatedJanuary 22, 2018
UpdatedMarch 7, 2024
Classificationbad-unknown
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET INFO Base64 Encoded powershell.exe in HTTP Response M1"; flow:established,to_client; http.content_type; content:"text/plain"; startswith; file.data; content:"cG93ZXJzaGVsbC5leG"; fast_pattern; reference:url,otx.alienvault.com/pulse/5a1348416dd9eb0c92d9897a; classtype:bad-unknown; sid:2025238; rev:5; metadata:created_at 2018_01_22, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_07;)

References

urlotx.alienvault.com/pulse/5a1348416dd9eb0c92d9897a

Metadata

created at2018_01_22
confidenceHigh
signature severityInformational
tagDescription_Generated_By_Proofpoint_Nexus
updated at2024_03_07

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