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06-15-2006, 11:27 PM
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#1
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LQ Newbie
Registered: Aug 2004
Posts: 18
Rep: 
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Have i been hacked ?
Using chkrootkit
ROOTDIR is `/'
Checking `amd'... not found
Checking `basename'... not infected
Checking `biff'... not found
Checking `chfn'... not infected
Checking `chsh'... not infected
Checking `cron'... not infected
Checking `date'... not infected
Checking `du'... not infected
Checking `dirname'... not infected
Checking `echo'... not infected
Checking `egrep'... not infected
Checking `env'... not infected
Checking `find'... not infected
Checking `fingerd'... not found
Checking `gpm'... not infected
Checking `grep'... not infected
Checking `hdparm'... not infected
Checking `su'... not infected
Checking `ifconfig'... not infected
Checking `inetd'... not tested
Checking `inetdconf'... not found
Checking `identd'... not found
Checking `init'... not infected
Checking `killall'... not infected
Checking `ldsopreload'... not infected
Checking `login'... not infected
Checking `ls'... not infected
Checking `lsof'... not infected
Checking `mail'... not infected
Checking `mingetty'... not infected
Checking `netstat'... not infected
Checking `named'... not found
Checking `passwd'... not infected
Checking `pidof'... not infected
Checking `pop2'... not found
Checking `pop3'... not found
Checking `ps'... not infected
Checking `pstree'... not infected
Checking `rpcinfo'... not infected
Checking `rlogind'... not found
Checking `rshd'... not found
Checking `slogin'... not infected
Checking `sendmail'... not infected
Checking `sshd'... not infected
Checking `syslogd'... not tested
Checking `tar'... not infected
Checking `tcpd'... not infected
Checking `tcpdump'... not infected
Checking `top'... not infected
Checking `telnetd'... not found
Checking `timed'... not found
Checking `traceroute'... not infected
Checking `vdir'... not infected
Checking `w'... not infected
Checking `write'... not infected
Checking `aliens'... no suspect files
Searching for sniffer's logs, it may take a while... nothing found
Searching for HiDrootkit's default dir... nothing found
Searching for t0rn's default files and dirs... nothing found
Searching for t0rn's v8 defaults... nothing found
Searching for Lion Worm default files and dirs... nothing found
Searching for RSHA's default files and dir... nothing found
Searching for RH-Sharpe's default files... nothing found
Searching for Ambient's rootkit (ark) default files and dirs... nothing found
Searching for suspicious files and dirs, it may take a while...
/usr/lib/jvm/java-1.4.2-sun-1.4.2.11/jre/.systemPrefs /usr/lib/jvm/java-1.4.2-sun-1.4.2.11/jre/.systemPrefs/.systemRootModFile /usr/lib/jvm/java-1.4.2-sun-1.4.2.11/jre/.systemPrefs/.system.lock /usr/lib/perl5/5.8.7/i586-linux-thread-multi/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/DBD/SQLite/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/DBI/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/PDA/Pilot/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Net/Daemon/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/RPC/PlServer/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/SaX/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/URI/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/XML/SAX/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/XML/LibXML/Common/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/XML/LibXML/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/XML/Parser/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/XML/NamespaceSupport/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/ycp/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/HTML/Parser/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/HTML/Tagset/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Gaim/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Glib/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Gtk2/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/PLog/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/AptPkg/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/RRDp/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/RRDs/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/X500/DN/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Term/ReadKey/.packlist /usr/lib/perl5/vendor_peResults of lastlog arrl/5.8.7/i586-linux-thread-multi/auto/Term/ReadLine/Gnu/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Config/Crontab/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Digest/MD4/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Digest/SHA1/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Crypt/SmbHash/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/SDL_perl/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Parse/RecDescent/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/XFree/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Locale/gettext/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/ConfigFile/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/libwww-perl/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/TimeDate/.packlist /usr/lib/perl5/vendor_perl/5.8.7/i586-linux-thread-multi/auto/Bootloader/.packlist
/usr/lib/jvm/java-1.4.2-sun-1.4.2.11/jre/.systemPrefs
Searching for LPD Worm files and dirs... nothing found
Searching for Ramen Worm files and dirs... nothing found
Searching for Maniac files and dirs... nothing found
Searching for RK17 files and dirs... nothing found
Searching for Ducoci rootkit... nothing found
Searching for Adore Worm... nothing found
Searching for ShitC Worm... nothing found
Searching for Omega Worm... nothing found
Searching for Sadmind/IIS Worm... nothing found
Searching for MonKit... nothing found
Searching for Showtee... nothing found
Searching for OpticKit... nothing found
Searching for T.R.K... nothing found
Searching for Mithra... nothing found
Searching for OBSD rk v1... nothing found
Searching for LOC rootkit... nothing found
Searching for Romanian rootkit... nothing found
Searching for Suckit rootkit... nothing found
Searching for Volc rootkit... nothing found
Searching for Gold2 rootkit... nothing found
Searching for TC2 Worm default files and dirs... nothing found
Searching for Anonoying rootkit default files and dirs... nothing found
Searching for ZK rootkit default files and dirs... nothing found
Searching for ShKit rootkit default files and dirs... nothing found
Searching for AjaKit rootkit default files and dirs... nothing found
Searching for zaRwT rootkit default files and dirs... nothing found
Searching for Madalin rootkit default files... nothing found
Searching for Fu rootkit default files... nothing found
Searching for ESRK rootkit default files... nothing found
Searching for anomalies in shell history files... nothing found
Checking `asp'... not infected
Checking `bindshell'... not infected
Checking `lkm'... You have 1 process hidden for ps command
chkproc: Warning: Possible LKM Trojan installed
Checking `rexedcs'... not found
Checking `sniffer'... eth0: PF_PACKET(/sbin/dhcpcd)
Checking `w55808'... not infected
Checking `wted'... chkwtmp: nothing deleted
Checking `scalper'... not infected
Checking `slapper'... not infected
Checking `z2'... user root deleted or never logged from lastlog!
Checking `chkutmp'... The tty of the following user process(es) were not found
in /var/run/utmp !
! RUID PID TTY CMD
! root 5468 tty7 /usr/X11R6/bin/X -nolisten tcp :0 vt7 -auth /var/lib/xdm/authdir/authfiles/A:0-YJoW8t
chkutmp: nothing deleted
Results of lastlog are :
root **Never logged in**
bin **Never logged in**
daemon **Never logged in**
lp **Never logged in**
mail **Never logged in**
news **Never logged in**
uucp **Never logged in**
games **Never logged in**
man **Never logged in**
at **Never logged in**
wwwrun **Never logged in**
ftp **Never logged in**
postfix **Never logged in**
sshd **Never logged in**
ntp **Never logged in**
mdnsd **Never logged in**
messagebus **Never logged in**
haldaemon **Never logged in**
fuck :0 Fri Jun 16 13:01:35 +1000 2006
vscan **Never logged in**
aegis **Never logged in**
clamav **Never logged in**
snort **Never logged in**
results of chkrootkit -x lkm
ROOTDIR is `/'
###
### Output of: /sbin/chkproc -v -v -p 2
###
CWD 5294: /
EXE 5294: /usr/sbin/nscd
CWD 5295: /
EXE 5295: /usr/sbin/nscd
CWD 5296: /
EXE 5296: /usr/sbin/nscd
CWD 5297: /
EXE 5297: /usr/sbin/nscd
CWD 5298: /
EXE 5298: /usr/sbin/nscd
CWD 5299: /
EXE 5299: /usr/sbin/nscd
CWD 5309: /
EXE 5309: /usr/sbin/hpiod
Have I been hacked ?
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06-16-2006, 06:08 AM
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#2
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Moderator
Registered: May 2001
Posts: 29,415
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Searching for suspicious files and dirs, it may take a while...
Dot-files are in the Chkrootkit FAQ To verify see below. Unfortunately AFAIK Chkrootkit doesn't do whitelisting (like Rootkit Hunter does) so you're bound to see these dot-files in the next report.
Checking `lkm'... You have 1 process hidden for ps command
chkproc: Warning: Possible LKM Trojan installed
Chkproc accuracy is mentioned the Chkrootkit FAQ
Checking `z2'... user root deleted or never logged from lastlog!
If you're not the owner of the box: ask the owner. If you are visually inspect lastlog for being rotated.
Output of: /sbin/chkproc -v -v -p 2
EXE 5294: /usr/sbin/nscd
(Good running that manually). Verify nscd is a binary at that location on the filesystem. Then use your integrity checker (or package manager) to verify integrity of the package nscd is in. Sum should match doing "md5sum /proc/5294/exe".
After you've read and done those you'll find you most likely are not hacked. If you need info about additional security measures to take just ask.
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06-21-2006, 12:16 PM
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#3
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Senior Member
Registered: Oct 2004
Location: Houston, TX (usa)
Distribution: MEPIS, Debian, Knoppix,
Posts: 4,727
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I find it hard to vertically scan chkrootkit's output, so I like to filter it a bit:
Code:
chkrootkit \
| sed -r 's,^Checking, & ,;s,^Searching for,& ,;s, *(no[ t]),\t\1,' \
| pr -Te66 | less -S
The "66", which works nicely for me, happens to be $COLUMNS - 24. So, generalizing:
Code:
chkrootkit \
| sed -r 's,^Checking, & ,;s,^Searching for,& ,;s, *(no[ t]),\t\1,' \
| pr -Te$(($COLUMNS-24)) | less -S
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