Groups > alt.comp.os.windows-10 > #187122

Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection

From	"Carlos E.R." <robin_listas@es.invalid>
Newsgroups	alt.comp.os.windows-10, alt.comp.os.windows-11, comp.os.linux.advocacy
Subject	Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection
Date	2025-09-01 02:44 +0200
Message-ID	<bs6folxhen.ln2@Telcontar.valinor> (permalink)
References	(7 earlier) <KrYrQ.82041$KK53.64029@fx44.iad> <108qljn$1kvjl$8@dont-email.me> <pbhsQ.74215$j831.22295@fx40.iad> <20icolxl72.ln2@Telcontar.valinor> <109083h$2utm9$1@dont-email.me>

Cross-posted to 3 groups.

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On 2025-08-31 03:21, Lawrence D’Oliveiro wrote:
> On Sun, 31 Aug 2025 02:35:46 +0200, Carlos E.R. wrote:
> 
>> One of the reasons, there is never only one, is that rar has error
>> recovery. Meaning that you could create a rar archive divided into
>> several floppies (or CDs), and if some sectors were damaged, or lost in
>> transmission, the whole thing could still be correctly decompressed.
> 
> That division of data into blocks with redundancy to cope with some
> proportion of missing/damaged blocks is called an “erasure code”. E.g.
> fountain codes <https://errorcorrectionzoo.org/c/fountain> provide this
> sort of function.

Or "forward error correction". The NASA knows a lot about this, it is 
used in transmissions from the remote craft.

And oh, yes, I verified long ago that the feature did work as intended 
with floppies (rar).

> 
> That’s orthogonal to packing up files into an archive and applying
> compression, though. It can be useful to have one without the other.

Certainly.

> 
> I was looking through the standard Debian repo for some utility that
> provides such redundant segmentation, and I couldn’t find one.

par and par2, maybe. parchive.

-- 
Cheers, Carlos.

Thread

Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Symon <symon@notice.org> - 2025-08-27 09:14 +0200
  Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection "Mr. Man-wai Chang" <toylet.toylet@gmail.com> - 2025-08-27 23:25 +0800
    Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-27 23:22 +0000
      Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Hank Rogers <Hank@nospam.invalid> - 2025-08-27 19:21 -0500
        Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-28 00:41 +0000
          Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection CrudeSausage <crude@sausa.ge> - 2025-08-28 08:45 -0400
            Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-28 22:36 +0000
              Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection CrudeSausage <crude@sausa.ge> - 2025-08-29 08:39 -0400
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-30 00:16 +0000
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Hank Rogers <Hank@nospam.invalid> - 2025-08-29 20:02 -0500
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-30 03:35 +0000
          Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection pothead <pothead@snakebite.com> - 2025-08-28 15:45 +0000
        Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Paul <nospam@needed.invalid> - 2025-08-28 03:28 -0400
        Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Daniel70 <daniel47@somewhere.someplaceelse> - 2025-08-28 20:19 +1000
          Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Paul <nospam@needed.invalid> - 2025-08-28 07:54 -0400
            Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection "Carlos E.R." <robin_listas@es.invalid> - 2025-08-28 14:57 +0200
              Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection CrudeSausage <crude@sausa.ge> - 2025-08-28 09:02 -0400
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection "Carlos E.R." <robin_listas@es.invalid> - 2025-08-28 23:17 +0200
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-28 22:35 +0000
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection CrudeSausage <crude@sausa.ge> - 2025-08-29 08:38 -0400
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Paul <nospam@needed.invalid> - 2025-08-29 10:35 -0400
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection CrudeSausage <crude@sausa.ge> - 2025-08-29 10:55 -0400
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection "Carlos E.R." <robin_listas@es.invalid> - 2025-08-31 02:35 +0200
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-31 01:21 +0000
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Char Jackson <none@none.invalid> - 2025-08-31 12:58 -0500
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-31 22:46 +0000
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 02:44 +0200
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Paul <nospam@needed.invalid> - 2025-09-01 07:56 -0400
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection "Carlos E.R." <robin_listas@es.invalid> - 2025-09-01 14:21 +0200
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Char Jackson <none@none.invalid> - 2025-09-01 16:26 -0500
              Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-28 22:34 +0000
            Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-28 22:32 +0000
              Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Paul <nospam@needed.invalid> - 2025-08-28 19:18 -0400
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-29 00:50 +0000
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Paul <nospam@needed.invalid> - 2025-08-28 22:44 -0400
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-29 04:02 +0000
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Paul <nospam@needed.invalid> - 2025-08-29 00:53 -0400
                Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-29 05:31 +0000
        Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection CrudeSausage <crude@sausa.ge> - 2025-08-28 08:44 -0400
          Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection chrisv <chrisv@nospam.invalid> - 2025-08-28 16:30 -0500
            Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection CrudeSausage <crude@sausa.ge> - 2025-08-29 08:35 -0400
          Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-28 22:29 +0000
            Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection CrudeSausage <crude@sausa.ge> - 2025-08-29 08:36 -0400
              Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-30 05:39 +0000
              Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Paul <nospam@needed.invalid> - 2025-08-30 07:25 -0400
          Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Paul <nospam@needed.invalid> - 2025-08-28 19:40 -0400
            Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-08-29 00:51 +0000
            Re: Linux Malware Delivered via Malicious RAR Filenames Evades Antivirus Detection "Carlos E.R." <robin_listas@es.invalid> - 2025-09-02 12:45 +0200

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