DOUBLECUP's PNG Payload, (Mon, Aug 24th)
ID: b1596187-f3bb-53af-a272-ed418a781a19
STIX ID: report--b1596187-f3bb-53af-a272-ed418a781a19
Feed Name: SANS ISC Diary
Threat Score
This brief analysis explains that the DOUBLECUP sample does not use true steganography: a PowerShell payload is simply appended to a PNG and begins with CR+LF, enabling extraction with FINDSTR and direct execution via PowerShell; the write-up highlights the trick but shows no evidence of widespread exploitation.
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