Bugtraq mailing list archives
Re: Apache hacks (./atac, d0s.txt)
From: Skip Carter <skip () taygeta com>
Date: Fri, 29 Apr 2005 16:33:49 -0700
My server has been seeing some usual activities today, I don't have much ti= me to get down to the bottom of things, but after I investigated briefly I have decided to disable PERL executable permission for www-data (Apache process's user), also locked /var/tmp so www-data cannot write to it.=20
I found a bunch of processes called ./atac 20 running, and found the following content in /tmp/atac:
Running 'strings' on atac reveals that it does an ssh brute force login attack on remote systems. Interesting enough, our security logs last night showed such an attempt against some of our clients systems, with EXACTLY the same sequence of trial user names! So you have a copy of the tool that was being used against them. Skip -- Dr. Everett (Skip) Carter Phone: 831-641-0645 FAX: 831-641-0647 Taygeta Network Security Services email: skip () taygeta net 1340 Munras Ave., Suite 314 WWW: http://www.taygeta.net/ Monterey, CA. 93940
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Current thread:
- Re: Apache hacks (./atac, d0s.txt) a.list.address () gmail com (May 02)
- Re: Apache hacks (./atac, d0s.txt) Nick Bright (May 02)
- <Possible follow-ups>
- Re: Apache hacks (./atac, d0s.txt) Chris Umphress (May 02)
- Re: Apache hacks (./atac, d0s.txt) Sagiko (May 02)
- Re: Apache hacks (./atac, d0s.txt) Daniel Cid (May 02)
- Re: Apache hacks (./atac, d0s.txt) Luiz Henrique (May 02)
- Re: Apache hacks (./atac, d0s.txt) Skip Carter (May 02)
- Re: Apache hacks (./atac, d0s.txt) Robert Zilbauer (May 02)
- Re: Apache hacks (./atac, d0s.txt) KF (lists) (May 02)
- Re: Apache hacks (./atac, d0s.txt) Jay D. Dyson (May 02)
- Re: Apache hacks (./atac, d0s.txt) Steve Kemp (May 02)