Приветствую. Подскажите, кому не трудно, что можно сделать, куда копнуть. Ничего дельного найти не смог в силу мизерного опыта. Буду благодарен за любую помощь.

.SpoilerTarget" type="button">Spoiler: uname -a
Linux ***.**.**.*** 4.15.0-76-generic #86~16.04.1-Ubuntu SMP Mon Jan 20 11:02:50 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

.SpoilerTarget" type="button">Spoiler: ls -la /boot
total 840124

drwxr-xr-x 3 root root 4096 Apr 21 06:55 .

drwxr-xr-x 27 root root 4096 May 6 14:43 ..

-rw------- 1 root root 4049376 Feb 12 2019 System.map-4.15.0-46-generic

-rw------- 1 root root 4049889 Mar 15 2019 System.map-4.15.0-47-generic

-rw------- 1 root root 4051368 Apr 5 2019 System.map-4.15.0-48-generic

-rw-r----- 1 root root 4052501 May 8 2019 System.map-4.15.0-50-generic

-rw------- 1 root root 4050792 May 16 2019 System.map-4.15.0-51-generic

-rw------- 1 root root 4050825 Jun 6 2019 System.map-4.15.0-52-generic

-rw------- 1 root root 4050903 Jun 24 2019 System.map-4.15.0-54-generic

-rw------- 1 root root 4054631 Aug 7 2019 System.map-4.15.0-58-generic

-rw------- 1 root root 4061501 Aug 26 2019 System.map-4.15.0-60-generic

-rw------- 1 root root 4061501 Sep 6 2019 System.map-4.15.0-62-generic

-rw------- 1 root root 4061501 Sep 13 2019 System.map-4.15.0-64-generic

-rw------- 1 root root 4062077 Sep 18 2019 System.map-4.15.0-65-generic

-rw------- 1 root root 4062584 Oct 1 2019 System.map-4.15.0-66-generic

-rw------- 1 root root 4064065 Nov 12 18:23 System.map-4.15.0-70-generic

-rw------- 1 root root 4064436 Nov 26 22:04 System.map-4.15.0-72-generic

-rw-r----- 1 root root 4066237 Dec 18 09:15 System.map-4.15.0-74-generic

-rw-r----- 1 root root 4066237 Jan 20 15:23 System.map-4.15.0-76-generic

-rw------- 1 root root 4067466 Feb 12 08:35 System.map-4.15.0-88-generic

-rw------- 1 root root 4067536 Feb 28 20:24 System.map-4.15.0-91-generic

-rw------- 1 root root 4068326 Apr 1 08:44 System.map-4.15.0-96-generic

-rw-r----- 1 root root 3841523 Jan 5 2018 System.map-4.9.75-timeweb

-rw-r--r-- 1 root root 217004 Feb 12 2019 config-4.15.0-46-generic

-rw-r--r-- 1 root root 217004 Mar 15 2019 config-4.15.0-47-generic

-rw-r--r-- 1 root root 217286 Apr 5 2019 config-4.15.0-48-generic

-rw-r--r-- 1 root root 217286 May 8 2019 config-4.15.0-50-generic

-rw-r--r-- 1 root root 217286 May 16 2019 config-4.15.0-51-generic

-rw-r--r-- 1 root root 217286 Jun 6 2019 config-4.15.0-52-generic

-rw-r--r-- 1 root root 217286 Jun 24 2019 config-4.15.0-54-generic

-rw-r--r-- 1 root root 217262 Aug 7 2019 config-4.15.0-58-generic

-rw-r--r-- 1 root root 217381 Aug 26 2019 config-4.15.0-60-generic

-rw-r--r-- 1 root root 217381 Sep 6 2019 config-4.15.0-62-generic

-rw-r--r-- 1 root root 217381 Sep 13 2019 config-4.15.0-64-generic

-rw-r--r-- 1 root root 217370 Sep 18 2019 config-4.15.0-65-generic

-rw-r--r-- 1 root root 217370 Oct 1 2019 config-4.15.0-66-generic

-rw-r--r-- 1 root root 217488 Nov 12 18:23 config-4.15.0-70-generic

-rw-r--r-- 1 root root 217468 Nov 26 22:04 config-4.15.0-72-generic

-rw-r--r-- 1 root root 217503 Dec 18 09:15 config-4.15.0-74-generic

-rw-r--r-- 1 root root 217503 Jan 20 15:23 config-4.15.0-76-generic

-rw-r--r-- 1 root root 217503 Feb 12 08:35 config-4.15.0-88-generic

-rw-r--r-- 1 root root 217465 Feb 28 20:24 config-4.15.0-91-generic

-rw-r--r-- 1 root root 217465 Apr 1 08:44 config-4.15.0-96-generic

-rw-r--r-- 1 root root 163824 Jan 5 2018 config-4.9.75-timeweb

-rw-r--r-- 1 root root 163824 Jan 5 2018 config-4.9.75-timeweb.old

drwxr-xr-x 5 root root 12288 Apr 21 06:55 grub

-rw-r--r-- 1 root root 38087263 May 15 2019 initrd.img-4.15.0-50-generic

-rw-r--r-- 1 root root 38087364 Jun 21 2019 initrd.img-4.15.0-52-generic

-rw-r--r-- 1 root root 38080526 Jul 3 2019 initrd.img-4.15.0-54-generic

-rw-r--r-- 1 root root 38084498 Sep 3 2019 initrd.img-4.15.0-58-generic

-rw-r--r-- 1 root root 38091332 Sep 6 2019 initrd.img-4.15.0-60-generic

-rw-r--r-- 1 root root 38092722 Sep 15 2019 initrd.img-4.15.0-62-generic

-rw-r--r-- 1 root root 38091156 Sep 20 2019 initrd.img-4.15.0-64-generic

-rw-r--r-- 1 root root 38092258 Oct 3 2019 initrd.img-4.15.0-65-generic

-rw-r--r-- 1 root root 38093333 Oct 23 2019 initrd.img-4.15.0-66-generic

-rw-r--r-- 1 root root 38103191 Nov 20 06:47 initrd.img-4.15.0-70-generic

-rw-r--r-- 1 root root 38100730 Dec 11 06:42 initrd.img-4.15.0-72-generic

-rw-r--r-- 1 root root 38108528 Jan 16 07:11 initrd.img-4.15.0-74-generic

-rw-r--r-- 1 root root 38109016 Feb 5 07:06 initrd.img-4.15.0-76-generic

-rw-r--r-- 1 root root 38110808 Feb 26 07:03 initrd.img-4.15.0-88-generic

-rw-r--r-- 1 root root 38115311 Mar 26 07:15 initrd.img-4.15.0-91-generic

-rw-r--r-- 1 root root 38116820 Apr 21 06:55 initrd.img-4.15.0-96-generic

-rw-r--r-- 1 root root 22714999 Jan 10 2018 initrd.img-4.9.75-timeweb

-rw-r--r-- 1 root root 176500 Mar 12 2014 memtest86+.bin

-rw-r--r-- 1 root root 178176 Mar 12 2014 memtest86+.elf

-rw-r--r-- 1 root root 178680 Mar 12 2014 memtest86+_multiboot.bin

-rw------- 1 root root 8141336 May 14 2019 vmlinuz-4.15.0-50-generic

-rw------- 1 root root 8141080 Jun 17 2019 vmlinuz-4.15.0-52-generic

-rw------- 1 root root 8140856 Jun 25 2019 vmlinuz-4.15.0-54-generic

-rw------- 1 root root 8148696 Aug 8 2019 vmlinuz-4.15.0-58-generic

-rw------- 1 root root 8173112 Aug 26 2019 vmlinuz-4.15.0-60-generic

-rw------- 1 root root 8172440 Sep 6 2019 vmlinuz-4.15.0-62-generic

-rw------- 1 root root 8172440 Sep 17 2019 vmlinuz-4.15.0-64-generic

-rw------- 1 root root 8181016 Sep 19 2019 vmlinuz-4.15.0-65-generic

-rw------- 1 root root 8181656 Oct 3 2019 vmlinuz-4.15.0-66-generic

-rw------- 1 root root 8184600 Nov 13 10:24 vmlinuz-4.15.0-70-generic

-rw------- 1 root root 8185592 Nov 27 12:18 vmlinuz-4.15.0-72-generic

-rw------- 1 root root 8187192 Dec 19 14:43 vmlinuz-4.15.0-74-generic

-rw------- 1 root root 8187320 Jan 21 18:48 vmlinuz-4.15.0-76-generic

-rw------- 1 root root 8193496 Feb 12 16:28 vmlinuz-4.15.0-88-generic

-rw------- 1 root root 8193432 Mar 1 13:28 vmlinuz-4.15.0-91-generic

-rw------- 1 root root 8191544 Apr 6 19:08 vmlinuz-4.15.0-96-generic

-rw-r--r-- 1 root root 6761232 Jan 5 2018 vmlinuz-4.9.75-timeweb

.SpoilerTarget" type="button">Spoiler: ls -la --full-time /lib
total 332

drwxr-xr-x 21 root root 4096 2019-03-20 06:39:13.338937021 +0300 .

drwxr-xr-x 27 root root 4096 2020-05-06 14:52:50.318163636 +0300 ..

lrwxrwxrwx 1 root root 21 2016-02-16 13:18:42.115126992 +0300 cpp -> /etc/alternatives/cpp

drwxr-xr-x 3 root root 4096 2019-03-20 06:39:13.478937018 +0300 crda

drwxr-xr-x 2 root root 4096 2017-02-21 03:33:36.203966177 +0300 discover

drwxr-xr-x 2 root root 4096 2017-02-21 03:34:26.419965014 +0300 drbd

drwxr-xr-x 72 root root 32768 2019-07-20 13:16:38.864405916 +0300 firmware

drwxr-xr-x 2 root root 4096 2017-02-21 03:30:18.631970753 +0300 hdparm

drwxr-xr-x 2 root root 4096 2018-07-05 06:45:20.437203377 +0300 ifupdown

drwxr-xr-x 2 root root 4096 2019-01-16 06:49:08.667034612 +0300 init

-rwxr-xr-x 1 root root 71528 2017-06-13 18:47:43.000000000 +0300 klibc-gLiulUM5C1Zpwc25rCxX8UZ6S-s.so

lrwxrwxrwx 1 root root 17 2014-01-09 02:32:00.000000000 +0400 libip4tc.so.0 -> libip4tc.so.0.1.0

-rw-r--r-- 1 root root 27392 2014-01-09 02:32:05.000000000 +0400 libip4tc.so.0.1.0

lrwxrwxrwx 1 root root 17 2014-01-09 02:32:00.000000000 +0400 libip6tc.so.0 -> libip6tc.so.0.1.0

-rw-r--r-- 1 root root 31520 2014-01-09 02:32:05.000000000 +0400 libip6tc.so.0.1.0

lrwxrwxrwx 1 root root 16 2014-01-09 02:32:00.000000000 +0400 libiptc.so.0 -> libiptc.so.0.0.0

-rw-r--r-- 1 root root 5816 2014-01-09 02:32:05.000000000 +0400 libiptc.so.0.0.0

lrwxrwxrwx 1 root root 20 2014-01-09 02:32:00.000000000 +0400 libxtables.so.10 -> libxtables.so.10.0.0

-rw-r--r-- 1 root root 47712 2014-01-09 02:32:06.000000000 +0400 libxtables.so.10.0.0

drwxr-xr-x 3 root root 4096 2017-02-21 03:29:05.103972456 +0300 lsb

drwxr-xr-x 2 root root 4096 2020-04-21 06:54:38.683867507 +0300 modprobe.d

drwxr-xr-x 24 root root 4096 2020-04-21 06:54:37.623867532 +0300 modules

drwxr-xr-x 2 root root 4096 2017-02-21 03:32:07.783968225 +0300 modules-load.d

drwxr-xr-x 3 root root 4096 2018-05-30 06:25:18.758465321 +0300 plymouth

drwxr-xr-x 3 root root 4096 2016-02-16 13:17:51.699128162 +0300 recovery-mode

drwxr-xr-x 3 root root 4096 2019-04-12 07:07:29.311777451 +0300 systemd

drwxr-xr-x 15 root root 4096 2016-02-16 13:01:39.123150686 +0300 terminfo

drwxr-xr-x 4 root root 4096 2019-04-12 07:07:52.995928901 +0300 udev

drwxr-xr-x 2 root root 4096 2017-02-21 03:33:25.463966426 +0300 ufw

drwxr-xr-x 4 root root 16384 2019-04-12 07:07:29.515675446 +0300 x86_64-linux-gnu

drwxr-xr-x 2 root root 20480 2017-02-21 03:33:22.667966491 +0300 xtables

.SpoilerTarget" type="button">Spoiler: mount
/dev/sda1 on / type ext4 (rw,noatime,discard)

proc on /proc type proc (rw,noexec,nosuid,nodev,hidepid=1)

sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)

none on /sys/fs/cgroup type tmpfs (rw)

none on /sys/fs/fuse/connections type fusectl (rw)

none on /sys/kernel/debug type debugfs (rw)

none on /sys/kernel/security type securityfs (rw)

udev on /dev type devtmpfs (rw,mode=0755)

devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)

none on /tmp type tmpfs (rw,noexec,nosuid,nodev,noatime,size=4g)

tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)

none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)

shm on /run/shm type tmpfs (rw,nosuid,nodev,size=1g)

none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)

none on /sys/fs/pstore type pstore (rw)

none on /var/spool/exim4 type tmpfs (rw,noexec,nosuid,nodev,noatime,size=1g)

systemd on /sys/fs/cgroup/systemd type cgroup (rw,noexec,nosuid,nodev,relatime,name=systemd)

/dev/drbd0 on /home type ext4 (rw,nosuid,noatime,nodiratime,usrjquota=aquota.use r,jqfmt=vfsv0,usrquota,discard,_netdev)

/tmp on /var/tmp type none (rw,bind,_netdev)

/tmp on /var/tmp type none (rw,bind,_netdev)

none on /run/shm type tmpfs (rw,nosuid,nodev,size=1g)

//***.**.**.***/on_demand on /mnt/on_demand_storage-cs3-old type cifs (ro,noexec,nosuid,nodev)

//***.**.**.***/homes on /mnt/backup type cifs (ro,noexec,nosuid,nodev)

//***.**.**.***/on_demand on /mnt/on_demand_storage-cs2 type cifs (ro,noexec,nosuid,nodev)

//***.**.**.***/on_demand on /mnt/on_demand_storage-cs1 type cifs (ro,noexec,nosuid,nodev)

.SpoilerTarget" type="button">Spoiler: df -h
Filesystem Size Used Avail Use% Mounted on

/dev/sda1 46G 33G 11G 76% /

none 4.0K 0 4.0K 0% /sys/fs/cgroup

udev 32G 12K 32G 1% /dev

/tmp 4.0G 400M 3.7G 10% /var/tmp

tmpfs 6.3G 872K 6.3G 1% /run

none 5.0M 4.0K 5.0M 1% /run/lock

shm 1.0G 36K 1.0G 1% /run/shm

none 100M 8.0K 100M 1% /run/user

none 1.0G 736K 1.0G 1% /var/spool/exim4

/dev/drbd0 1.3T 1.3T 38G 98% /home

none 1.0G 36K 1.0G 1% /run/shm

.SpoilerTarget" type="button">Spoiler: cat /etc/issue
Ubuntu 14.04.6 LTS \n \l

.SpoilerTarget" type="button">Spoiler: cat /etc/crontab
# /etc/crontab: system-wide crontab

# Unlike any other crontab you don't have to run the `crontab'

# command to install the new version when you edit this file

# and files in /etc/cron.d. These files also have username fields,

# that none of the other crontabs do.

SHELL=/bin/sh

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

# m h dom mon dow user command

17 * * * * root cd / && run-parts --report /etc/cron.hourly

25 6 * * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )

47 6 * * 7 root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )

52 6 1 * * root test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )

#

.SpoilerTarget" type="button">Spoiler: cat /proc/version
Linux version 4.15.0-76-generic (buildd@lgw01-amd64-023) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.12)) #86~16.04.1-Ubuntu SMP Mon Jan 20 11:02:50 UTC 2020

.SpoilerTarget" type="button">Spoiler: find / -type f -perm -u+s -exec ls -la {} \; 2>/dev/null
-rwsr-xr-x 1 root root 30800 May 15 2015 /bin/fusermount

-rwsr-xr-x 1 root root 94792 Nov 24 2016 /bin/mount

-rwsr-xr-x 1 root root 69120 Nov 24 2016 /bin/umount

-rwsr-xr-x 1 root root 36936 May 17 2017 /bin/su

-rwsr-xr-x 1 root root 36592 May 17 2017 /usr/bin/newgrp

-rwsr-xr-x 1 root root 75256 Oct 21 2013 /usr/bin/mtr

-rwsr-xr-x 1 root root 23104 Mar 15 2014 /usr/bin/traceroute6.iputils

-rwsr-xr-x 1 root root 46424 May 17 2017 /usr/bin/chfn

-rwsr-sr-x 1 daemon daemon 51464 Oct 21 2013 /usr/bin/at

-rwsr-xr-x 1 root root 35712 Nov 8 2009 /usr/bin/tcptraceroute.mt

-rwsr-xr-x 1 root root 23304 Mar 27 2019 /usr/bin/pkexec

-rwsr-xr-x 1 root root 41336 May 17 2017 /usr/bin/chsh

-rwsr-xr-x 1 root root 72280 May 17 2017 /usr/bin/gpasswd

-rwsr-xr-x 1 root root 47032 May 17 2017 /usr/bin/passwd

-rwsr-xr-x 1 root root 155008 May 29 2017 /usr/bin/sudo

-rwsr-sr-x 1 libuuid libuuid 18904 Nov 24 2016 /usr/sbin/uuidd

-r-sr-x--- 1 root customers 983424 Feb 10 2018 /usr/sbin/exim4

-rwsr-xr-- 1 root dip 347296 Jun 12 2018 /usr/sbin/pppd

-rwsr-xr-x 1 root root 440416 Mar 4 2019 /usr/lib/openssh/ssh-keysign

-rwsr-xr-- 1 root messagebus 310800 Dec 7 2016 /usr/lib/dbus-1.0/dbus-daemon-launch-helper

-rwsr-xr-x 1 root root 10240 Mar 27 2017 /usr/lib/eject/dmcrypt-get-device

-rwsr-xr-x 1 root root 14808 Mar 27 2019 /usr/lib/policykit-1/polkit-agent-helper-1

-rwsr-xr-x 1 root root 35608 Jun 28 2013 /sbin/mount.cifs