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DOUBLECUP Malware Uses PNG Files to Deliver Payloads
- Engineer — Learn: DOUBLECUP embeds payloads inside PNG files as an obfuscation layer rather than true steganography; worth understanding the technique when reviewing file-upload handling and egress filtering in your pipelines, but no patch or config change is required today.
- SOC/IR — Learn: The write-up surfaces a payload-delivery method using PNG files, which could inform tuning detections around suspicious image-file execution chains; however, the summary is too truncated to extract IOCs or a concrete detection rule — monitor the full SANS diary for actionable indicators.
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