Please look at this and tell me if I have rootkits installed or these are false alarms. I have 2 servers and both are locked down with apf and BFD with latest patch level.

Thanks.
Shadi

Server 1

Rootkit Hunter 1.2.7 is running

Determining OS... Ready


Checking binaries
* Selftests
Strings (command) [ OK ]


* System tools
Performing 'known good' check...
/bin/cat [ OK ]
/bin/chmod [ OK ]
/bin/chown [ OK ]
/bin/dmesg [ OK ]
/bin/egrep [ OK ]
/bin/env [ OK ]
/bin/fgrep [ OK ]
/bin/grep [ OK ]
/bin/kill [ OK ]
/bin/login [ OK ]
/bin/ls [ OK ]
/bin/mount [ OK ]
/bin/netstat [ OK ]
/bin/ps [ OK ]
/bin/su [ OK ]
/sbin/chkconfig [ OK ]
/sbin/depmod [ OK ]
/sbin/ifconfig [ OK ]
/sbin/init [ OK ]
/sbin/insmod [ OK ]
/sbin/modinfo [ OK ]
/sbin/runlevel [ OK ]
/sbin/sysctl [ OK ]
/sbin/syslogd [ OK ]
/usr/bin/file [ OK ]
/usr/bin/find [ OK ]
/usr/bin/groups [ OK ]
/usr/bin/kill [ OK ]
/usr/bin/killall [ OK ]
/usr/bin/lsattr [ OK ]
/usr/bin/pstree [ OK ]
/usr/bin/sha1sum [ OK ]
/usr/bin/stat [ OK ]
/usr/bin/users [ OK ]
/usr/bin/w [ OK ]
/usr/bin/watch [ OK ]
/usr/bin/who [ OK ]
/usr/bin/whoami [ OK ]


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 'f***`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'... [ Warning! ]

--------------------------------------------------------------------------------
Found parts of this rootkit/trojan by checking the default files and directories
Please inspect the available files, by running this check with the parameter
--createlogfile and check the log file (current file: /dev/null).
--------------------------------------------------------------------------------

Rootkit 'SHV5'... [ Warning! ]

--------------------------------------------------------------------------------
Found parts of this rootkit/trojan by checking the default files and directories
Please inspect the available files, by running this check with the parameter
--createlogfile and check the log file (current file: /dev/null).
--------------------------------------------------------------------------------

Rootkit 'Sin Rootkit'... [ OK ]
Rootkit 'Slapper'... [ OK ]
Rootkit 'Sneakin Rootkit'... [ OK ]
Rootkit 'Suckit Rootkit'... [ OK ]
Rootkit 'SunOS Rootkit'... [ Warning! ]

--------------------------------------------------------------------------------
Found parts of this rootkit/trojan by checking the default files and directories
Please inspect the available files, by running this check with the parameter
--createlogfile and check the log file (current file: /dev/null).
--------------------------------------------------------------------------------

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 ]

* Trojan specific characteristics
shv4
Checking /etc/rc.d/rc.sysinit
Test 1 [ Clean ]
Test 2 [ Clean ]
Test 3 [ Clean ]
Checking /etc/inetd.conf [ Clean ]
Checking /etc/xinetd.conf [ Clean ]

* 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 ]


System checks
* Allround tests
Checking hostname... Found. Hostname is name.removed.for.security
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........................................
........................................
........................................
........................................
........................................
........................................
........................................
........................................
........................................
........................................
...............................
Result rc.d files check [ OK ]
Checking history files
Bourne Shell [ OK ]

* Filesystem checks
Checking /dev for suspicious files... [ Warning! (unusual files found) ]
---------------------------------------------
Unusual files:
/dev/srd0: MS-DOS executable (EXE)
---------------------------------------------
Scanning for hidden files... [ OK ]


Application advisories
* Application scan
Checking Apache2 modules ... [ Not found ]
Checking Apache configuration ... [ OK ]

* Application version scan
- Exim MTA 4.52 [ OK ]
- GnuPG 1.2.1 [ Old or patched version ]
- Apache [unknown] [ OK ]
- Bind DNS 9.2.4 [ OK ]
- OpenSSL 0.9.7a [ Old or patched version ]
- PHP 4.3.11 [ OK ]
- PHP 4.3.11 [ OK ]
- Procmail MTA 3.22 [ OK ]
- OpenSSH 3.6.1p2 [ Old or patched version ]



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) ]


---------------------------- Scan results ----------------------------

MD5
MD5 compared: 115
Incorrect MD5 checksums: 0

File scan
Scanned files: 342
Possible infected files: 3
Possible rootkits: SHV4 SHV5 SunOS Rootkit

Application scan
Vulnerable applications: 3

Scanning took 81 seconds

-----------------------------------------------------------------------

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)

-----------------------------------------------------------------------



Server 2:



Rootkit Hunter 1.2.7 is running

Determining OS... Ready


Checking binaries
* Selftests
Strings (command) [ OK ]


* System tools
Performing 'known good' check...
/bin/cat [ OK ]
/bin/chmod [ OK ]
/bin/chown [ OK ]
/bin/dmesg [ BAD ]
/bin/egrep [ OK ]
/bin/env [ OK ]
/bin/fgrep [ OK ]
/bin/grep [ OK ]
/bin/kill [ BAD ]
/bin/login [ BAD ]
/bin/ls [ OK ]
/bin/mount [ BAD ]
/bin/netstat [ OK ]
/bin/ps [ OK ]
/bin/su [ OK ]
/sbin/chkconfig [ OK ]
/sbin/depmod [ OK ]
/sbin/ifconfig [ OK ]
/sbin/init [ OK ]
/sbin/insmod [ OK ]
/sbin/modinfo [ OK ]
/sbin/runlevel [ OK ]
/sbin/sysctl [ OK ]
/sbin/syslogd [ OK ]
/usr/bin/file [ OK ]
/usr/bin/find [ OK ]
/usr/bin/groups [ OK ]
/usr/bin/kill [ OK ]
/usr/bin/killall [ OK ]
/usr/bin/lsattr [ OK ]
/usr/bin/pstree [ OK ]
/usr/bin/sha1sum [ OK ]
/usr/bin/stat [ OK ]
/usr/bin/users [ OK ]
/usr/bin/w [ OK ]
/usr/bin/watch [ OK ]
/usr/bin/who [ OK ]
/usr/bin/whoami [ OK ]
--------------------------------------------------------------------------------
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).
--------------------------------------------------------------------------------


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 'f***`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 ]

* 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 [ Clean ]

* 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 ]


System checks
* Allround tests
Checking hostname... Found. Hostname is name.removed.for.security
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........................................
........................................
........................................
........................................
........................................
........................................
........................................
........................................
........................................
........................................
........................................
........................................
........................................
.....................
Result rc.d files check [ OK ]
Checking history files
Bourne Shell [ OK ]

* Filesystem checks
Checking /dev for suspicious files... [ OK ]
Scanning for hidden files... [ OK ]


Application advisories
* Application scan
Checking Apache2 modules ... [ Not found ]
Checking Apache configuration ... [ OK ]

* Application version scan
- Exim MTA 4.52 [ OK ]
- GnuPG 1.2.1 [ Old or patched version ]
- Apache [unknown] [ OK ]
- Bind DNS 9.2.4 [ OK ]
- OpenSSL 0.9.7a [ Old or patched version ]
- PHP 4.3.2 [ Old or patched version ]
- PHP 4.3.11 [ OK ]
- Procmail MTA 3.22 [ OK ]
- OpenSSH 3.6.1p2 [ Old or patched version ]



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) ]


---------------------------- Scan results ----------------------------

MD5
MD5 compared: 115
Incorrect MD5 checksums: 4

File scan
Scanned files: 342
Possible infected files: 0

Application scan
Vulnerable applications: 4

Scanning took 96 seconds

-----------------------------------------------------------------------

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)

-----------------------------------------------------------------------

I would say the box is comprimised

The first box is compromised. The second box is normal for RHEL3u6 because the databases haven't been updated for one of the newest packages from RHN.

I cannot reload OS at this point in time. Is there a cleanup procedure or utility for the 3 rootkits ?

Thanks.

Once the server has been compromised all data on it should be treated as suspect. You need to get an OS reload then restore your most recent backups.

Even on server 2 I myself would say it's compromised.

The "login" file is throwing a red flag, so you may never know when a particular user logs on or not. "dmesg" are some of your system messages, that's throwing up a red flag too.

Check your /etc/passwd see if theirs any suspicious accounts in their.

But IMO Server 1 I would say IS compromised.

Provided server 2 has been upgraded to update 6, it is normal for those 4 items to be bad as Blue|Fusion mentioned above.

I would look into The Planet OS Hardening after you get an OS relead, they do a really good job on it .

I would not look at the MD5 checksums. The only thing useful with RKHunter in a redhat system is pretty much it's rootkit checker. I've spoken with the script writer personally.