[ctx]ctxseccontext security: attacks on the harness and context layer of AI agents, plus exploited-now news, hunting and playbooks.

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research (SANS ISC diary, Nov 13, 2026; sample from Nov 11) · published here

Hunt: Macfinger ClickFix fake CAPTCHA pushes the 'DownTheDRAIN' macOS infostealer, which can redirect crypto wallet contents

  • Lure domain: quill-kraee-um2gf[.]pro
  • Payload URLs: hxxp://45.150.32[.]130/37339606cba4522a?force=1 (bash installer), hxxp://45.150.32[.]130/4be1066a49e75?force=1 (Mach-O)
  • C2: HTTP POST to hxxp://171.22.131[.]24:8133/api/t
  • SHA-256: 58e503cc2e6aacc6bdba54f40a7edebf7a5362bef0a9039769baaba8c472c4db (installer), 8b5026d841aa93758ec3cb55c276f84d3ec1cf459810e0d9aa5624e2776f2fcd (downloaded binary), c34cc30cb1cff5c47d77e62a3ba63e9a183989ec1ccdf7929beb1bcae0d41f23 (saved binary)
  • Behavior: Terminal spawning curl/bash to a bare IP with ?force=1; an executable named com.apple.update in ~/Library/Caches.

Sources: SANS ISC: Macfinger ClickFix campaign sends DownTheDRAIN infostealer for macOS (Brad Duncan, Nov 13, 2026)