Author Topic: Early code drop from avast 5 for you to test :-)  (Read 46999 times)

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Offline igor

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Re: Early code drop from avast 5 for you to test :-)
« Reply #15 on: July 15, 2006, 10:53:13 PM »
I believe the current version (protecting avast! processes) prevents code injection as well (though they are probably multiple ways to do that) - so I'd say the answer would be yes.

Offline RejZoR

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Re: Early code drop from avast 5 for you to test :-)
« Reply #16 on: July 19, 2006, 10:23:28 AM »
Wow, interesting toy it is :) To my surprise it's extremelly resistant.
avast! processes aren't even listed in Advanced Process Termination tool (you can't terminate stuff thats not listed) , tempering with them in Task Manager is impossible.
Process Explorer also can't do a thing. I have to test two more things and then i'll report back again :)
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ross

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Re: Early code drop from avast 5 for you to test :-)
« Reply #17 on: July 19, 2006, 02:03:03 PM »
IceSword 1.16en can terminate all of the processes apparently.  :-\

Offline Lisandro

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Re: Early code drop from avast 5 for you to test :-)
« Reply #18 on: July 24, 2006, 03:47:08 PM »
How to uninstall the Avast! Process Termination Prevention?

I've sent a comment / bug report to vlk@avast.com

I think I found a bug or a non-good interaction with IDS monitor...
Maybe I'm wrong but some processes are 'running' hidden in background and the GUI does not appear  ??? ::)

For instance, here, trying to install a new ClamWin version...  :P
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Offline Vlk

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Re: Early code drop from avast 5 for you to test :-)
« Reply #19 on: July 24, 2006, 07:33:33 PM »
Quote
IceSword 1.16en can terminate all of the processes apparently.

Well, IceSword operates in kernel mode (it's an anti-rootkit tool) and for that reason, it can do whatever patching it needs to. Either we kill it first, or it kills us, it's as simple as that (it's a cat & mouse game).

In avast 5, the anti-termination feature will be accompanied by a comprehensive behavior blocker, and one of the behavior blocker triggers will be installation of kernel-mode code. So, it will at least warn you that an application (IceSword in this case) is attempting to load some code into the kernel, and you will be given a chance to block that (and of course, the program will then deny to load and no process killing will take place).


Thanks :)
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Offline Lisandro

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Re: Early code drop from avast 5 for you to test :-)
« Reply #20 on: July 24, 2006, 07:52:45 PM »
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Offline RejZoR

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Re: Early code drop from avast 5 for you to test :-)
« Reply #21 on: July 24, 2006, 07:54:32 PM »
Just delete registry entries that you imported, delete the driver and reboot the system. Thats it. Behavior blocker will again keep an eye on these two parts in case someone or something wants to temper with the protection driver.
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Offline Dwarden

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Re: Early code drop from avast 5 for you to test :-)
« Reply #22 on: July 25, 2006, 04:41:52 PM »
Quote
IceSword 1.16en can terminate all of the processes apparently.

Well, IceSword operates in kernel mode (it's an anti-rootkit tool) and for that reason, it can do whatever patching it needs to. Either we kill it first, or it kills us, it's as simple as that (it's a cat & mouse game).

In avast 5, the anti-termination feature will be accompanied by a comprehensive behavior blocker, and one of the behavior blocker triggers will be installation of kernel-mode code. So, it will at least warn you that an application (IceSword in this case) is attempting to load some code into the kernel, and you will be given a chance to block that (and of course, the program will then deny to load and no process killing will take place).


Thanks :)
Vlk


Hi Vlk,

 it's just me or does this sound like sort of HIPS (aka ProcessGuard / System Safety Monitor ? )
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Offline RejZoR

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Re: Early code drop from avast 5 for you to test :-)
« Reply #23 on: July 25, 2006, 04:57:10 PM »
It will be something like Panda TruPrevent or Kaspersky Proactive Defense Module.
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Offline Vlk

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Re: Early code drop from avast 5 for you to test :-)
« Reply #24 on: July 25, 2006, 05:58:17 PM »
HIPS is a good word, too. Yes, you got it right ;)
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Offline Lisandro

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Re: Early code drop from avast 5 for you to test :-)
« Reply #25 on: July 25, 2006, 07:34:23 PM »
Vlk, the problem occured when using Kerio and the Application Behavior Blocking monitor (one application started by another).
It's not only with the second option (HIPS) that is only available in the paid version of Kerio.
On the freeware version, even without HIPS, avast antikill feature 'conflicts' with the Application Behavior Blocking.
I don't know if this will be a problem or not... With Comodo firewall, which does not have this feature, no problem.

Will this feature conflict with System Safe Monitor as stated above?
« Last Edit: July 25, 2006, 07:38:14 PM by Tech »
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mouniernetwork

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Re: Early code drop from avast 5 for you to test :-)
« Reply #26 on: August 23, 2006, 10:27:22 PM »
Sure sounds very exiting this avast 5  ;D
I 'm going to try the protection myself.  ::)

MounierNetwork

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Re: Early code drop from avast 5 for you to test :-)
« Reply #27 on: August 29, 2006, 06:37:52 PM »
Hello,

I just tested the antikill feature and it works great  ; ;)
The only thing is that it actually works twoo well in disabling the shutdown of the process named ashdisp.exe,etc... this can be exploited by a malware which would be named ashdisp.exe or any other file name that is protected by the driver. :P
Try it,take any application and change its name to ashdisp.exe and you won't be able to shut it down.
Maybe specifing the path and the filenames would be better that way the files would have to be replaced by the virus which is inpossible or maybe checking the md5 for which file to protect.

I hope this helps  ;)

Al968

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Re: Early code drop from avast 5 for you to test :-)
« Reply #28 on: August 29, 2006, 08:58:12 PM »
ashDisp.exe is the avast icon and interface to the on-access providers, it doesn't actually have any security function other than it is a pain in the rear when it isn't there. It is just a windows startup item and not a full blown avast service.
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mouniernetwork

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Re: Early code drop from avast 5 for you to test :-)
« Reply #29 on: August 29, 2006, 11:05:03 PM »
yes I do know that but I do not see the relation with my previous post.
As I mentioned in my previous post the problem is that if a malware has the same filename that any avast application have such as :
ashServ.exe
ashWebSv.exe
 ashMaiSv.exe   
ashDisp.exe
aswUpdSv.exe
avast.setup
aswServ.exe
aswWebSv.exe 
aswMaiSv.exe   
aswDisp.exe
AvAgent.exe

then avast nor any program will be able to stop it.
please do download macfee stinger,rename it aswMaiSv.exe, then   run it and try to stop it using the task manager.
You won't be able to because of the new antikill.

Hope this clarifies my previous post  ;)

Al968