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To: cygwin@cygwin.com
From: Ernie Rael <err@raelity.com>
Subject: sshd.exe infected with IDP.Generic?
Message-ID: <14cda058-251c-21f2-e153-edf37ef9ef91@raelity.com>
Date: Fri, 10 Jul 2020 12:01:16 -0700
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On Win7. To get an elevated shell, I typically do "$ ssh xxx@yyy". And 
not very often.

Below is an excerpt of something potentially horrible that just happened.

Note the

    rm *

I exited the shell. I did the "ssh..." again (yeah I'm crazy), in a 
different bash window. And this time avast reported that it stashed 
sshd.exe into the virus chest.

I'm not sure who/what the culprit is, or what's going on. But it does 
look like there was (is?) some kind of infection somewhere on my system. 
I had used ftp earlier to put a file to a remote, but...?

I didn't realize that netstat was a windows command (not that I wouldn't 
have used it).

I've got the sshd.exe file. It has a date of Feb 18. So

  * Can I check if the bits in sshd.exe are as expected?
  * Any suggestions on cleaning up and/or restoring sanity? (I'm running
    a full virus scan right now, should be amusing...)
  * How can I get sshd.exe back? Is there a cygwin command to check that
    the packages are all as they should be?

-ernie

=============== EXCERPT ==========================

>
> $ ssh xxx@yyy
> Last login: Mon May 18 21:37:37 2020 from 192.168.0.11
>       ____________________, ______________________________________
>    .QQQQQQQQQQQQQQQQQQQQQQQQL_ |                                      |
>  .gQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ__ 
> |                                      |
>  ........
>
> ADMIN ~
> $ netstat -b -a | less
>
>
> ######################### worked but had to ^Z/kill to get out
>
> ADMIN ~
> $
>
> ADMIN ~
> $
>
> ADMIN ~
> $ rm *
> rm: cannot remove 'play': Is a directory
> rm: cannot remove 'system': Is a directory
>
> ADMIN erra@spirit ~
> $
>
>
> ADMIN ~/play
> $ netstat -b -a | less
>
> ######################### let netstat complete normally, got out of 
> less ok
>
>
> ADMIN ~/play
> $ client_loop: send disconnect: Connection reset by peer

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