Hello,
I was not reading my system logs regularly (that's bad!). Today I
noticed the following:
----------
Rootkit Hunter 1.2.8 is running
Sat, 21 Apr 2007 13:30:40 +0300
Determining OS... Ready
Checking binaries
* Selftests
Strings (command) [ OK ]
* System tools
Info: prelinked files found
Performing 'known good' check...
/bin/cat [ BAD ]
/bin/chmod [ BAD ]
/bin/chown [ BAD ]
/bin/date [ BAD ]
/bin/dmesg [ BAD ]
/bin/env [ BAD ]
/bin/grep [ BAD ]
/bin/kill [ BAD ]
/bin/login [ BAD ]
/bin/ls [ BAD ]
/bin/more [ BAD ]
/bin/mount [ BAD ]
/bin/netstat [ BAD ]
/bin/ps [ BAD ]
/bin/su [ BAD ]
/sbin/chkconfig [ BAD ]
/sbin/depmod [ BAD ]
/sbin/ifconfig [ BAD ]
/sbin/init [ BAD ]
/sbin/insmod [ BAD ]
/sbin/ip [ BAD ]
/sbin/lsmod [ BAD ]
/sbin/modinfo [ BAD ]
/sbin/modprobe [ BAD ]
/sbin/rmmod [ BAD ]
/sbin/runlevel [ BAD ]
/sbin/sulogin [ BAD ]
/sbin/sysctl [ BAD ]
/sbin/syslogd [ BAD ]
/usr/bin/chattr [ BAD ]
/usr/bin/du [ BAD ]
/usr/bin/file [ BAD ]
/usr/bin/find [ BAD ]
/usr/bin/head [ BAD ]
/usr/bin/killall [ BAD ]
/usr/bin/lsattr [ BAD ]
/usr/bin/passwd [ BAD ]
/usr/bin/pstree [ BAD ]
/usr/bin/sha1sum [ BAD ]
/usr/bin/stat [ BAD ]
/usr/bin/top [ BAD ]
/usr/bin/users [ BAD ]
/usr/bin/vmstat [ BAD ]
/usr/bin/w [ BAD ]
/usr/bin/watch [ BAD ]
/usr/bin/wc [ BAD ]
/usr/bin/wget [ BAD ]
/usr/bin/whereis [ BAD ]
/usr/bin/who [ BAD ]
/usr/bin/whoami [ BAD ]
--------------------------------------------------------------------------------
Rootkit Hunter found some bad or unknown hashes. This can be happen due
replaced
binaries or updated packages (which give other hashes). Be sure your
hashes are
fully updated (rkhunter --update). If you're in doubt about these
hashes, contact
the author (fill in the contact form).
--------------------------------------------------------------------------------
[Press <ENTER> to continue]
Check rootkits
* Default files and directories
Rootkit '55808 Trojan - Variant A'... [ OK ]
ADM Worm... [ OK ]
Rootkit 'AjaKit'... [ OK ]
Rootkit 'aPa Kit'... [ OK ]
Rootkit 'Apache Worm'... [ OK ]
Rootkit 'Ambient (ark) Rootkit'... [ OK ]
Rootkit 'Balaur Rootkit'... [ OK ]
Rootkit 'BeastKit'... [ OK ]
Rootkit 'beX2'... [ OK ]
Rootkit 'BOBKit'... [ OK ]
Rootkit 'CiNIK Worm (Slapper.B variant)'... [ OK ]
Rootkit 'Danny-Boy's Abuse Kit'... [ OK ]
Rootkit 'Devil RootKit'... [ OK ]
Rootkit 'Dica'... [ OK ]
Rootkit 'Dreams Rootkit'... [ OK ]
Rootkit 'Duarawkz'... [ OK ]
Rootkit 'Flea Linux Rootkit'... [ OK ]
Rootkit 'FreeBSD Rootkit'... [ OK ]
Rootkit 'Fuck`it Rootkit'... [ OK ]
Rootkit 'GasKit'... [ OK ]
Rootkit 'Heroin LKM'... [ OK ]
Rootkit 'HjC Kit'... [ OK ]
Rootkit 'ignoKit'... [ OK ]
Rootkit 'ImperalsS-FBRK'... [ OK ]
Rootkit 'Irix Rootkit'... [ OK ]
Rootkit 'Kitko'... [ OK ]
Rootkit 'Knark'... [ OK ]
Rootkit 'Li0n Worm'... [ OK ]
Rootkit 'Lockit / LJK2'... [ OK ]
Rootkit 'MRK'... [ OK ]
Rootkit 'Ni0 Rootkit'... [ OK ]
Rootkit 'RootKit for SunOS / NSDAP'... [ OK ]
Rootkit 'Optic Kit (Tux)'... [ OK ]
Rootkit 'Oz Rootkit'... [ OK ]
Rootkit 'Portacelo'... [ OK ]
Rootkit 'R3dstorm Toolkit'... [ OK ]
Rootkit 'RH-Sharpe's rootkit'... [ OK ]
Rootkit 'RSHA's rootkit'... [ OK ]
Sebek LKM [ OK ]
Rootkit 'Scalper Worm'... [ OK ]
Rootkit 'Shutdown'... [ OK ]
Rootkit 'SHV4'... [ OK ]
Rootkit 'SHV5'... [ OK ]
Rootkit 'Sin Rootkit'... [ OK ]
Rootkit 'Slapper'... [ OK ]
Rootkit 'Sneakin Rootkit'... [ OK ]
Rootkit 'Suckit Rootkit'... [ OK ]
Rootkit 'SunOS Rootkit'... [ OK ]
Rootkit 'Superkit'... [ OK ]
Rootkit 'TBD (Telnet BackDoor)'... [ OK ]
Rootkit 'TeLeKiT'... [ OK ]
Rootkit 'T0rn Rootkit'... [ OK ]
Rootkit 'Trojanit Kit'... [ OK ]
Rootkit 'Tuxtendo'... [ OK ]
Rootkit 'URK'... [ OK ]
Rootkit 'VcKit'... [ OK ]
Rootkit 'Volc Rootkit'... [ OK ]
Rootkit 'X-Org SunOS Rootkit'... [ OK ]
Rootkit 'zaRwT.KiT Rootkit'... [ OK ]
* Suspicious files and malware
Scanning for known rootkit strings [ OK ]
Scanning for known rootkit files [ OK ]
Testing running processes... [ OK ]
Miscellaneous Login backdoors [ OK ]
Miscellaneous directories [ OK ]
Software related files [ OK ]
Sniffer logs [ OK ]
[Press <ENTER> to continue]
* Trojan specific characteristics
shv4
Checking /etc/rc.d/rc.sysinit
Test 1 [ Clean ]
Test 2 [ Clean ]
Test 3 [ Clean ]
Checking /etc/inetd.conf [ Not found ]
Checking /etc/xinetd.conf [ Skipped ]
* Suspicious file properties
chmod properties
Checking /bin/ps [ Clean ]
Checking /bin/ls [ Clean ]
Checking /usr/bin/w [ Clean ]
Checking /usr/bin/who [ Clean ]
Checking /bin/netstat [ Clean ]
Checking /bin/login [ Clean ]
Script replacements
Checking /bin/ps [ Clean ]
Checking /bin/ls [ Clean ]
Checking /usr/bin/w [ Clean ]
Checking /usr/bin/who [ Clean ]
Checking /bin/netstat [ Clean ]
Checking /bin/login [ Clean ]
* OS dependant tests
Linux
Checking loaded kernel modules... [ OK ]
Checking files attributes [ OK ]
Checking LKM module path [ OK ]
Networking
* Check: frequently used backdoors
Port 2001: Scalper Rootkit [ OK ]
Port 2006: CB Rootkit [ OK ]
Port 2128: MRK [ OK ]
Port 14856: Optic Kit (Tux) [ OK ]
Port 47107: T0rn Rootkit [ OK ]
Port 60922: zaRwT.KiT [ OK ]
* Interfaces
Scanning for promiscuous interfaces [ OK ]
[Press <ENTER> to continue]
System checks
* Allround tests
Checking hostname... Found. Hostname is hst-1-98.siriusbg.com
Checking for passwordless user accounts... OK
Checking for differences in user accounts... OK. No changes.
Checking for differences in user groups... OK. No changes.
Checking boot.local/rc.local file...
- /etc/rc.local [ OK ]
- /etc/rc.d/rc.local [ OK ]
- /usr/local/etc/rc.local [ Not found ]
- /usr/local/etc/rc.d/rc.local [ Not found ]
- /etc/conf.d/local.start [ Not found ]
- /etc/init.d/boot.local [ Not found ]
Checking rc.d files...
Processing........................................
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Result rc.d files check [ OK ]
Checking history files
Bourne Shell [ OK ]
* Filesystem checks
Checking /dev for suspicious files... [ OK ]
Scanning for hidden files... [ Warning! ]
---------------
/dev/.udev /etc/.pwd.lock
---------------
Please inspect: /dev/.udev (directory)
[Press <ENTER> to continue]
Application advisories
* Application scan
Checking Apache2 modules ... [ Not found ]
Checking Apache configuration ... [ OK ]
Security advisories
* Check: Groups and Accounts
Searching for /etc/passwd... [ Found ]
Checking users with UID '0' (root)... [ OK ]
* Check: SSH
Searching for sshd_config...
Found /etc/ssh/sshd_config
Checking for allowed root login... [ OK
(Remote root login disabled) ]
Checking for allowed protocols... [ OK (Only
SSH2 allowed) ]
* Check: Events and Logging
Search for syslog configuration... [ OK ]
Checking for running syslog slave... [ OK ]
Checking for logging to remote system... [ OK (no
remote logging) ]
[Press <ENTER> to continue]
---------------------------- Scan results ----------------------------
MD5
MD5 compared: 50
Incorrect MD5 checksums: 50
File scan
Scanned files: 342
Possible infected files: 0
Application scan
Scanning took 905 seconds
------------------- Sat, 21 Apr 2007 13:45:45 +0300 -------------------
Do you have some problems, undetected rootkits, false positives, ideas
or suggestions?
Please e-mail me by filling in the contact form (@http://www.rootkit.nl)
-----------------------------------------------------------------------
In the logs I found exactly the same results since one month ago.
Does that mean I have been hacked and all those binaries are replaced?
The secure logs are full with unaccepted ssh connections. The only
successful connections for this period are from a known IP, but
unfortunately I have no older logs.
Thanks for any clues!
Regards,
Peter
home site: http://bgwebdeveloper.com
