full-disclosure - Re: Hacked servers mining for bitcoins?

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Date: Tue, 19 Jul 2011 20:21:54 +0100
From: Chris M <chris@...lroute.net>
To: "Zach C." <fxchip@...il.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Hacked servers mining for bitcoins?

Yes, it is well known that certain individuals are using compromised *nix
servers particularly to run bitcoin miners into pools. Its only been
happening for.. a long time.

On Tue, Jul 19, 2011 at 8:20 PM, Zach C. <fxchip@...il.com> wrote:

> Hmm -- that's interesting. I wonder if it would be possible/feasible to
> build a botnet in this fashion that would overtake legitimate bitcoin nodes
> in terms of CPU power. (You probably know what would happen then)
> On Jul 19, 2011 12:11 PM, "Robin" <robin@...ec.net> wrote:
> > Had to deal with a server today that had been hacked (still running
> > realVNC 4.0, so there's that lovely bypass exploit released 4 years
> > ago). This server was an exchange/domain controller for a small business.
> >
> > Not much seemed to have been done to it. From the looks of it, all the
> > attacker had done was make themselves a new account (domain user, local
> > admin, username 'sys'), and had then logged into it, downloaded the
> > Ufasoft bitcoin miner from a russian file sharing site, and then run it.
> > The file was called `mmc.exe`, and was saved in the new account's `My
> > Documents`. No other attempts to hide what was being done.
> >
> > Has anyone seen this before? Can you make more money from generating
> > bitcoins on a hacked server than sending spam from it? The value of
> > bitcoin is usually offset by the cost of generating it, but if you're
> > using other people's resources to do it, it suddenly seems much more
> > attractive. This looked like a fairly amateur attempt, so it could be a
> > one-off skiddy, but maybe others will follow...
> >
> > ~Robin
> >
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