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mission:log:2015:03:28:digital-exorcism [2015/03/28 11:07] – chronomission:log:2015:03:28:digital-exorcism [2015/03/28 17:46] (current) – chrono
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-~~DRAFT~~ 
- 
 ====== Personal Log: Digital Exorcism ====== ====== Personal Log: Digital Exorcism ======
  
 When you leave the commercial/proprietary software ecosphere and jump into open-source operating systems, you will have to learn how to handle daemons. And once you've created a couple of those daemons yourself, taught them what to do and let them work in production, you gain a lot of experience and confidence in dealing with all kinds of daemons.  When you leave the commercial/proprietary software ecosphere and jump into open-source operating systems, you will have to learn how to handle daemons. And once you've created a couple of those daemons yourself, taught them what to do and let them work in production, you gain a lot of experience and confidence in dealing with all kinds of daemons. 
  
-Yesterday, a couple of friends from the awesome http://co-munity.net/ecobytes project seemed to be in some sort of possible DDoS trouble and asked for my advice and experience to mitigate the issue. Now, to me, it is a very amazing experience to simply get root access to a lot of machines lately, operated by people which I have never physically met but in this case we are connected by [[https://moneyless.org/elf-pavlik-moneyless-2009|elf-pavlik]]. And in today's world, voluntarily giving root access to someone else, is the ultimate token of trust or/and friendship. So I'd like to thank you guys for that vote of confidence. +Yesterday, a couple of friends from the awesome http://co-munity.net/ecobytes project seemed to be in some sort of possible DDoS trouble and asked for my advice and experience to mitigate the issue. Now, to me, it is a very amazing experience to simply get root access to a lot of machines lately, operated by people which I have never physically met but in this case we are connected by [[https://wwelves.org/perpetual-tripper|elf-pavlik]]. And in today's world, voluntarily giving root access to someone else, is the ultimate token of trust or/and friendship. So I'd like to thank you guys for that vote of confidence. 
  
 Since it was supposed to be a DDoS, I've had my input filters clamped too early and saw that something was going on and a lot of traffic was moving but it somehow seemed wrong compared to other DDoS investigations I had to do in the past. After some failed attempts to block/null-route a couple of offensive networks, our analysis focus shifted to traffic distribution where we saw that one of the VMs seemed to be the top talker. And it also became clear that the traffic wasn't coming in, it was going out. I didn't take care to look at flow direction at all because I already assumed it was incoming traffic (DDoS).  Since it was supposed to be a DDoS, I've had my input filters clamped too early and saw that something was going on and a lot of traffic was moving but it somehow seemed wrong compared to other DDoS investigations I had to do in the past. After some failed attempts to block/null-route a couple of offensive networks, our analysis focus shifted to traffic distribution where we saw that one of the VMs seemed to be the top talker. And it also became clear that the traffic wasn't coming in, it was going out. I didn't take care to look at flow direction at all because I already assumed it was incoming traffic (DDoS). 
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 After verifying that the traffic really was outgoing, it was time to find out what is causing this amount of traffic. In the old days, exorcism was a bit more of a good show I think, today, it's just a couple of people sharing the same tmux session, listening to their favorite kind of music and hacking away with a couple of tcpdumps, iftops, netstats and some other shell mumbo-jumbo. rkhunter didn't identify any rootkits. The daemon concealment seemed done like a crude quick-hack. If I'd have to hide something in a system, I'd definitely make it much harder for someone to track.  After verifying that the traffic really was outgoing, it was time to find out what is causing this amount of traffic. In the old days, exorcism was a bit more of a good show I think, today, it's just a couple of people sharing the same tmux session, listening to their favorite kind of music and hacking away with a couple of tcpdumps, iftops, netstats and some other shell mumbo-jumbo. rkhunter didn't identify any rootkits. The daemon concealment seemed done like a crude quick-hack. If I'd have to hide something in a system, I'd definitely make it much harder for someone to track. 
  
-At the time two daemons of the kit were running: /.sshd and /http. sshd was located at /usr/sbin/.sshd and http at /etc/http. Both put some sort of pidfile into /tmp/$foo.lod, by which we were able to identify the running processes in the first place. It also seems to carry replacements for lsof,netstat,ps and ss, each one seems to be a unique binary. With the the exception of bsd-port/jave, the rest of the identified files are basically just copies of the same with a different name and come with this file signature, which already stood out on a more or less up to date 64-bit machine.+At the time two daemons of the kit were running: /.sshd and /http. sshd was located at /usr/sbin/.sshd and http at /etc/http. Both put some sort of pidfile into /tmp/$foo.lod, by which we were able to identify the running processes in the first place. It also seems to carry replacements for lsof,netstat,ps and ss, each one seems to be a unique binary. With the exception of bsd-port/jave, the rest of the identified files are basically just copies of the same with a different name and come with this file signature, which already stood out on a more or less up to date 64-bit machine.
  
 <code> <code>
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-{{tag>trojan ddos security virus linux}}+{{tag>trojan ddos security virus linux research ops}}
  
-{{keywords>Apollo-NG apollo next generation hackerspace hacker space research development makerspace fablab diy community open-resource open resource mobile hackbus hackbase trojan ddos security virus linux}}+{{keywords>Apollo-NG apollo next generation hackerspace hacker space research development makerspace fablab diy community open-resource open resource mobile hackbus hackbase trojan ddos security virus linux research ops}}
  
 ~~DISCUSSION~~ ~~DISCUSSION~~
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