Hello, I have just run rkhunter under manjaro (kde: Plasma) and noted some warnings. Are these anything to worry about, or just false positives. I paste the whole output below. Sorry about the wobbly data, but I cant see a code tag Code: [andrew@Dell-pc ~]$ sudo rkhunter -c [sudo] password for andrew: [ Rootkit Hunter version 1.4.6 ] Checking system commands... Performing 'strings' command checks Checking 'strings' command [ OK ] Performing 'shared libraries' checks Checking for preloading variables [ None found ] Checking for preloaded libraries [ None found ] Checking LD_LIBRARY_PATH variable [ Not found ] Performing file properties checks Checking for prerequisites [ Warning ] /usr/bin/awk [ OK ] /usr/bin/basename [ OK ] /usr/bin/bash [ OK ] /usr/bin/cat [ OK ] /usr/bin/chattr [ OK ] /usr/bin/chmod [ OK ] /usr/bin/chown [ OK ] /usr/bin/chroot [ OK ] /usr/bin/cp [ OK ] /usr/bin/curl [ OK ] /usr/bin/cut [ OK ] /usr/bin/date [ OK ] /usr/bin/depmod [ OK ] /usr/bin/df [ OK ] /usr/bin/diff [ OK ] /usr/bin/dirname [ OK ] /usr/bin/dmesg [ OK ] /usr/bin/du [ OK ] /usr/bin/echo [ OK ] /usr/bin/egrep [ Warning ] /usr/bin/env [ OK ] /usr/bin/fgrep [ Warning ] /usr/bin/file [ OK ] /usr/bin/find [ OK ] /usr/bin/fsck [ OK ] /usr/bin/fuser [ OK ] /usr/bin/grep [ OK ] /usr/bin/groupadd [ OK ] /usr/bin/groupdel [ OK ] /usr/bin/groupmod [ OK ] /usr/bin/groups [ OK ] /usr/bin/grpck [ OK ] /usr/bin/head [ OK ] /usr/bin/id [ OK ] /usr/bin/init [ OK ] /usr/bin/insmod [ OK ] /usr/bin/ip [ OK ] /usr/bin/ipcs [ OK ] /usr/bin/kill [ OK ] /usr/bin/killall [ OK ] /usr/bin/last [ OK ] /usr/bin/lastlog [ OK ] /usr/bin/ldd [ Warning ] /usr/bin/less [ OK ] /usr/bin/logger [ OK ] /usr/bin/login [ OK ] /usr/bin/ls [ OK ] /usr/bin/lsattr [ OK ] /usr/bin/lsmod [ OK ] /usr/bin/mail [ OK ] /usr/bin/md5sum [ OK ] /usr/bin/mktemp [ OK ] /usr/bin/modinfo [ OK ] /usr/bin/modprobe [ OK ] /usr/bin/more [ OK ] /usr/bin/mount [ OK ] /usr/bin/mv [ OK ] /usr/bin/newgrp [ OK ] /usr/bin/nologin [ OK ] /usr/bin/passwd [ OK ] /usr/bin/perl [ OK ] /usr/bin/pgrep [ OK ] /usr/bin/ping [ OK ] /usr/bin/pkill [ OK ] /usr/bin/ps [ OK ] /usr/bin/pstree [ OK ] /usr/bin/pwck [ OK ] /usr/bin/pwd [ OK ] /usr/bin/readlink [ OK ] /usr/bin/rkhunter [ OK ] /usr/bin/rmmod [ OK ] /usr/bin/runcon [ OK ] /usr/bin/runlevel [ OK ] /usr/bin/sed [ OK ] /usr/bin/sh [ OK ] /usr/bin/sha1sum [ OK ] /usr/bin/sha224sum [ OK ] /usr/bin/sha256sum [ OK ] /usr/bin/sha384sum [ OK ] /usr/bin/sha512sum [ OK ] /usr/bin/size [ OK ] /usr/bin/sort [ OK ] /usr/bin/ssh [ OK ] /usr/bin/sshd [ OK ] /usr/bin/stat [ OK ] /usr/bin/strings [ OK ] /usr/bin/su [ OK ] /usr/bin/sudo [ OK ] /usr/bin/sulogin [ OK ] /usr/bin/sysctl [ OK ] /usr/bin/tail [ OK ] /usr/bin/telnet [ OK ] /usr/bin/test [ OK ] /usr/bin/top [ OK ] /usr/bin/touch [ OK ] /usr/bin/tr [ OK ] /usr/bin/uname [ OK ] /usr/bin/uniq [ OK ] /usr/bin/useradd [ OK ] /usr/bin/userdel [ OK ] /usr/bin/usermod [ OK ] /usr/bin/users [ OK ] /usr/bin/vipw [ OK ] /usr/bin/vmstat [ OK ] /usr/bin/w [ OK ] /usr/bin/watch [ OK ] /usr/bin/wc [ OK ] /usr/bin/wget [ OK ] /usr/bin/whatis [ OK ] /usr/bin/whereis [ OK ] /usr/bin/which [ OK ] /usr/bin/who [ OK ] /usr/bin/whoami [ OK ] /usr/bin/numfmt [ OK ] /usr/bin/gawk [ OK ] /usr/bin/kmod [ OK ] /usr/bin/systemctl [ OK ] /usr/bin/vendor_perl/GET [ Warning ] /usr/lib/systemd/systemd [ OK ] /etc/rkhunter.conf [ OK ] [Press <ENTER> to continue] Checking for rootkits... Performing check of known rootkit files and directories 55808 Trojan - Variant A [ Not found ] ADM Worm [ Not found ] AjaKit Rootkit [ Not found ] Adore Rootkit [ Not found ] aPa Kit [ Not found ] Apache Worm [ Not found ] Ambient (ark) Rootkit [ Not found ] Balaur Rootkit [ Not found ] BeastKit Rootkit [ Not found ] beX2 Rootkit [ Not found ] BOBKit Rootkit [ Not found ] cb Rootkit [ Not found ] CiNIK Worm (Slapper.B variant) [ Not found ] Danny-Boy's Abuse Kit [ Not found ] Devil RootKit [ Not found ] Diamorphine LKM [ Not found ] Dica-Kit Rootkit [ Not found ] Dreams Rootkit [ Not found ] Duarawkz Rootkit [ Not found ] Ebury backdoor [ Not found ] Enye LKM [ Not found ] Flea Linux Rootkit [ Not found ] Fu Rootkit [ Not found ] ****`it Rootkit [ Not found ] GasKit Rootkit [ Not found ] Heroin LKM [ Not found ] HjC Kit [ Not found ] ignoKit Rootkit [ Not found ] IntoXonia-NG Rootkit [ Not found ] Irix Rootkit [ Not found ] Jynx Rootkit [ Not found ] Jynx2 Rootkit [ Not found ] KBeast Rootkit [ Not found ] Kitko Rootkit [ Not found ] Knark Rootkit [ Not found ] ld-linuxv.so Rootkit [ Not found ] Li0n Worm [ Not found ] Lockit / LJK2 Rootkit [ Not found ] Mokes backdoor [ Not found ] Mood-NT Rootkit [ Not found ] MRK Rootkit [ Not found ] Ni0 Rootkit [ Not found ] Ohhara Rootkit [ Not found ] Optic Kit (Tux) Worm [ Not found ] Oz Rootkit [ Not found ] Phalanx Rootkit [ Not found ] Phalanx2 Rootkit [ Not found ] Phalanx2 Rootkit (extended tests) [ Not found ] Portacelo Rootkit [ Not found ] R3dstorm Toolkit [ Not found ] RH-Sharpe's Rootkit [ Not found ] RSHA's Rootkit [ Not found ] Scalper Worm [ Not found ] Sebek LKM [ Not found ] Shutdown Rootkit [ Not found ] SHV4 Rootkit [ Not found ] SHV5 Rootkit [ Not found ] Sin Rootkit [ Not found ] Slapper Worm [ Not found ] Sneakin Rootkit [ Not found ] 'Spanish' Rootkit [ Not found ] Suckit Rootkit [ Not found ] Superkit Rootkit [ Not found ] TBD (Telnet BackDoor) [ Not found ] TeLeKiT Rootkit [ Not found ] T0rn Rootkit [ Not found ] trNkit Rootkit [ Not found ] Trojanit Kit [ Not found ] Tuxtendo Rootkit [ Not found ] URK Rootkit [ Not found ] Vampire Rootkit [ Not found ] VcKit Rootkit [ Not found ] Volc Rootkit [ Not found ] Xzibit Rootkit [ Not found ] zaRwT.KiT Rootkit [ Not found ] ZK Rootkit [ Not found ] [Press <ENTER> to continue] Performing additional rootkit checks Suckit Rootkit additional checks [ OK ] Checking for possible rootkit files and directories [ None found ] Checking for possible rootkit strings [ None found ] Performing malware checks Checking running processes for suspicious files [ Skipped ] Checking for login backdoors [ None found ] Checking for sniffer log files [ None found ] Checking for suspicious directories [ None found ] Checking for suspicious (large) shared memory segments [ Warning ] Checking for Apache backdoor [ Not found ] Performing Linux specific checks Checking loaded kernel modules [ OK ] Checking kernel module names [ OK ] [Press <ENTER> to continue] Checking the network... Performing checks on the network ports Checking for backdoor ports [ Skipped ] Performing checks on the network interfaces Checking for promiscuous interfaces [ None found ] Checking the local host... Performing system boot checks Checking for local host name [ Found ] Checking for system startup files [ Found ] Checking system startup files for malware [ None found ] Performing group and account checks Checking for passwd file [ Found ] Checking for root equivalent (UID 0) accounts [ None found ] Checking for passwordless accounts [ None found ] Checking for passwd file changes [ Warning ] Checking for group file changes [ Warning ] Checking root account shell history files [ OK ] Performing system configuration file checks Checking for an SSH configuration file [ Found ] Checking if SSH root access is allowed [ Warning ] Checking if SSH protocol v1 is allowed [ Warning ] Checking for other suspicious configuration settings [ None found ] Checking for a running system logging daemon [ Found ] Checking for a system logging configuration file [ Found ] Performing filesystem checks Checking /dev for suspicious file types [ None found ] Checking for hidden files and directories [ Warning ] [Press <ENTER> to continue] System checks summary ===================== File properties checks... Required commands check failed Files checked: 120 Suspect files: 4 Rootkit checks... Rootkits checked : 409 Possible rootkits: 12 Applications checks... All checks skipped The system checks took: 6 minutes and 58 seconds All results have been written to the log file: /var/log/rkhunter.log One or more warnings have been found while checking the system. Please check the log file (/var/log/rkhunter.log) [andrew@Dell-pc ~]$
The information in the rkhunter.log is slightly more meaningful. My recommendation is not to run the tool if you're not fairly confident with Linux. Also, you can safely ignore those warnings. Among others: https://www.dedoimedo.com/computers/chkrootkit-lkm-warning.html https://www.dedoimedo.com/computers/chkrootkit-suckit-message.html Mrk
I want to run the tool, and learn from the results. I have rkhunter from my repository, but chkrootkit is not available. I will need to find a reliable download site (probably the chkrootkit site, or its repository). A comparison will help me eliminate false positives. I will check your links and hope that they provide a list of false positives. Regards
Someone edited this post and intruduced the code - thank you. I could not see the tags. I assume that you simply put the data between Code: Regards
I have found a way to read the log file: sudo cat /var/log/rkhunter.log. As you say, more information is available. It appears that some of my files have been replaced by executable scripts. I wonder how and why they wer replaced. I can only think that during one of the updates the files may have been replaced
The updates are the most likely thing. Really, no reason to sweat it. If you really want to, you can check the update history and check which packages were updated. But that's just a brain exercise. Mrk
Yes. I can read the pacman.log (using sudo and cat). Out of interest, are the pacman.log and the rkhunter.log overwritten whenever there is an update (pacman), or, whenever rkhunter is run? Regards
