MalwareBazaar Database

c4ffeine

Foxveil 'cc2' build Mach-O, the FIFTY-THIRD payload served from this one unchanged URL (fat x86_64+arm64, 1,117,984 B), fetched via Tor 2026-09-24 01:42:46 UTC, origin build time 01:03:41, 1 hour 29 minutes after the previous build. The origin is nginx, so each build time is readable from the ETag: the payloads served behind this URL were stamped 2026-09-20 07:02:41, 09:02:47, 11:03:28, 14:01:46, 15:02:41, 16:02:02, 20:05:52, 21:01:38, 2026-09-21 00:01:43, 01:02:53, 04:03:03, 07:04:04, 11:06:32, 12:02:19, 13:02:09, 16:01:36, 17:02:28, 20:05:20, 2026-09-22 02:05:11, 04:01:46, 08:03:11, 09:03:01, 10:02:17, 11:01:44, 12:01:30, 2026-09-23 00:01:36 and 2026-09-24 01:03:41 UTC. The job skips hours rather than running on a fixed interval, and the gaps measured so far run from 25 minutes to 5 hours 59 minutes. Hash sequence on the same URL: a3dabccd14492f4c70658ece96a3ed7b4e275ff9d70c434298bd6f863d1e24b9 (987,264 B, 2026-09-18), ec780ca8df9d10df905f3f77641f88ece7651303843802c37a57c484c6251a42, 610ae82d0d872334ba68718030bdeb0c2d23ce592b4c9022fbb225b0208b884a, 233fd2c05865e6fc7034e61bf98e64f7afeb24c1b3e88539895eeff764ebb740, 336f4bf8eb4d76c91f936beabe3a061b43db46d2cc85e6dc82dd22f9194191fc, 8e7d88f5adef0f2706fbc6df433e3c76d81c4b799389319e60a4639fc1c088a1, f03b8beef33330786b3f3f12e2bf2c352d4f14b8e6d5a78180205c7cccdcefb7, 6f994814774412107510aede65422e66c1e825f57bd3ae5d0f173aa2c54893d5, a2da9aba412172006b2ba30e2168ec030dabcdf8c46e6895ffba1c26834251a6, 382a3e22d91b93c67de463fde451870620e661b8e96f40a4ece80a2d3543a03f, c254bf1cd9ab1496ad01785ed181bd6e314534bb1f079a4bc4616b40a8fd62ee, 5fabab3dc7f8b73ee1343b01ea9e3d7802a41d12e9a03b1c80f66b72b98fd3fa, dbedefe4ca5494b6188085e27b17f0f3133fe2ec7df04cfe69714f8047c994bf, 534b55b6772e5c2669f325bc877056c874a180650253e4bd5844ffaf69c384b6, 9f7bfdbf82d08d21fd6e9f31dc5f5e9e9b541bb39f94fa32992281a463e73173, aacf8388643245011a2b5edc472fafa48277e33b7b7e4de23ba62b1a8e919558 (903,952 B, 2026-09-21 12:02:19), fcf16d3a7cf00b46d53c059afbd20f444eb816763d44ddd90df93059037eafa2 (953,664 B, 2026-09-21 13:02:09), 4701f196c74af42b5ced01592bf4a74d54437b1c63b8aabfe1f92e9beabec769 (936,912 B, 2026-09-21 16:01:36), bb2d62df63ff1726eec5e17cc9e30850c39d0a15353aa267a916bcdb75d709c6 (905,264 B, 2026-09-21 17:02:28), a39eb6928c17a779f4030bf6ac0eeec41f828a64140f2a06cb63b8658e589267 (938,032 B, 2026-09-21 20:05:20), 0356cc5dbb826085c0de5ca038d5888bf29cd4c80b26da987a2b9dc2eee727be (871,984 B, 2026-09-22 02:05:11), e8fdb578177f84033916427efad848f72d8fd43e1672744fc625b5165f2feca7 (2026-09-22 04:01:46), d729286210cc1566ea7eef55258bc20fe94e418cb478ac5544feb288e2fb803c (954,208 B, 2026-09-22 08:03:11), 9bda679c0a2996e9562e2e8477891771c61e872cd226d441d3b17e907c42a762 (937,840 B, 2026-09-22 09:03:01), 03745f11d65fcbea95ff01e32e31f0e0a687679deba39156be37ef977424d551 (904,384 B, 2026-09-22 10:02:17), c59ad0ccb24fd26854831a949138182a707b7f61480b743e118508d4cd424a36 (953,936 B, 2026-09-22 11:01:44), 40372ba52d15fe52679e3c67479b9967e1135a6dc960d390614e9b131c481e3e (1,052,064 B, 2026-09-22 23:02:49), 1707c849c17706537c7db56edf5f08aeb5e2cfa2d3e9c144a96d75a6dac09268 (1,051,808 B, 2026-09-23 23:34:34), then this one. The delivery chain is fixed and only the payload rotates: the stage-1 zsh dropper at the same host (sha256 6e753133e537264247a08587d87b30b8d9a96caea1d6cc92d41fc8058073b8f7) has carried the same ETag since 2026-09-18 12:56:51 (last checked 2026-09-24 01:42 UTC). Earlier builds in the series were unpacked statically and each held the same AMOS AppleScript stealer, with the same 47 handlers, hosts and persistence, decrypted with a key derived from the SHA-256 of the loader's own __text section, so each repack rekeys itself. What rotates is the wrapper: obfuscation volume, PBKDF2 iteration count, encrypted item count and table layout, tokens and the ad-hoc code signing identity. This build compared against the previous one: 45 __text functions against 44, TLSH of __text 83, within the range measured between builds of this family. The encrypted payload table holds 85 items totalling 197,030 bytes of plaintext against 104 items and 193,566 bytes in the previous build, a 1.8 percent move: the same script re-chunked. This build was not unpacked. Host answers HTTP 200 only to a curl User-Agent; browser User-Agents get a Cloudflare 520. Not executed.