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#279867 - 3rd Jan 2009 6:44pm ~.exe virus?
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9986
Loc: Birkenhead
I have a file ~.exe in c:windows\system32 directory/folder - does anybody know anything about his, it runs at boot somehow and tries to access the internet occasionally.

I strongly suspect this is a trojan keylogger (like somebody else on the net), but there is no mention by any of the virus people and only a couple of queries by punters.

It is not helped that google can't search for the tilde character ~

I can stop the process easy enough and it is well and truly blocked from talking to the internet.

For the moment I have renamed the file to stop it being run.

It is 8238 bytes long (9K), the only times it could have come onto my computer is either through an "Adobe Reader" update or a "Mozilla Thunderbird" update (which I might have OK'd without looking too closely), nothing else was given permission to run at about the time the file was created.

The only other funny that has happened recently was Windows Installer popping up sometimes looking for a CD that isn't there and asking me to insert a vdrive CD (I do have vdrive installed, but haven't used it for ages), this happens when I try to run programs that I use all the time from the hard drive, but happens only occasionally.

Any help appreciated.
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In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#279871 - 3rd Jan 2009 6:48pm Re: ~.exe virus? [Re: diggingdeeper]
Mark Online   Reading


Wiki Master

Registered: 9th Nov 2003
Posts: 21048
Loc: Wirral
Check

msconfig

and see if its in the list to run at boot up.
You can probably get rid, run a malware program too.

Start >> RUN >>> msconfig wink (Type in the Run Box)
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#279873 - 3rd Jan 2009 6:52pm Re: ~.exe virus? [Re: Mark]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9986
Loc: Birkenhead
Thanks Mark - I had checked with Spybot startup tool, but YES it is there in msconfig under HKLM/Microsoft/Windows/currentversion/run

But I still don't know if it a goody or a baddy

Spybot and AVG don't recognise it as a baddy and none of the other virus companies mention it in there lists of baddies as far as I can see.


Edited by diggingdeeper (3rd Jan 2009 6:54pm)

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#279877 - 3rd Jan 2009 7:00pm Re: ~.exe virus? [Re: diggingdeeper]
Mark Online   Reading


Wiki Master

Registered: 9th Nov 2003
Posts: 21048
Loc: Wirral
HKLM/Microsoft/Windows/currentversion/run

That's where most of the virus sit,
as it will start.

Get rid mate, if it had a job to do it would have a name simple as.

Dont for get to turn off your system restore,
as the virus can hide in there too.

Turn system restore off,
remove the virus
re-boot
turn system restore back on smile
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#279878 - 3rd Jan 2009 7:01pm Re: ~.exe virus? [Re: diggingdeeper]
Tony_1985 Offline

Forum Master

Registered: 19th Aug 2006
Posts: 2421
Loc: Ellesmere Port
delete it from the registry

reboot

then delete the file


that usually works

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#280092 - 4th Jan 2009 11:33am Re: ~.exe virus? [Re: Tony_1985]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9986
Loc: Birkenhead
What worries me is what other files it has "played" with which is why I am trying to find out about it.

I hate doing a full Windows install - takes hours.
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#280742 - 5th Jan 2009 9:57pm Re: ~.exe virus? [Re: diggingdeeper]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9986
Loc: Birkenhead
AVG was updated today, identified ~.exe in system32 as Trojan.Win32.Agent.AKSO

This is obviously getting round so watch out for it.

Though this trojan was known about Oct2008, it looks like it has been disguised in ~.exe (which is a packed exe file), none of the normal online scanners nor AVG, Spybot or Adaware recognised it as a baddie yesterday.
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#337849 - 23rd Jul 2009 11:13am Re: ~.exe virus? [Re: diggingdeeper]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9986
Loc: Birkenhead
This nasty little b*gg*r is floating around again - I have yet to discover how it gets into my computer - it is the only virus that sneaks in undetected, it is contained immediately so can't actually do anything.

The only programs I have installed recently have been very established ones, downloaded from the program's own site or filehippo or download.com

The lastest installs/updates were Aspell (GNU spelling checker), Duplicate Cleaner update, AVG update, CCleaner update.

Forgot to check the install date of ~.exe which would have told me what it came in with. I was too quick to BLAST it off this planet.

Although AVG recognised this virus previously, it has gone undetected again so must have been reformed, it is definately the sneakiest trojan around, I do suggest checking if it exists on your computers c:\windows\system32\~.exe

If you find it delete it, there maybe some .dat file in the same directory starting with _c these seem to be its data collection files, I have read about them but never seen them (because on my computer ~.exe is prevented from functioning)

more info

here - clicky

Please no lectures on AVG, F-secure, Avast, Norton etc - they ALL missed this trojan last time it came around in 2008, AVG was the first to correctly recognise it although F-secure was the first that could fix it (unbelievably, before it could detect it).

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#337870 - 23rd Jul 2009 12:51pm Re: ~.exe virus? [Re: diggingdeeper]
Shadow_Omega Offline

Wise One

Registered: 29th Apr 2009
Posts: 871
Loc: Leasowe
perhaps you should try the free version of malaware anti malware if Norton and the likes missed it. i had a similar virus a year back and malaware removed it completly. you can find there website here http://www.malwarebytes.org/

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#337895 - 23rd Jul 2009 2:24pm Re: ~.exe virus? [Re: Shadow_Omega]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
AVG is utter shite at best, and if you are running multiple instances of AV software it is little suprise they are failing to detect virus's.

smile

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#337927 - 23rd Jul 2009 3:34pm Re: ~.exe virus? [Re: diggingdeeper]
topofthepops Offline

Addict

Registered: 2nd Nov 2008
Posts: 218
Loc: Wallasey
AVG used to have a function to make a "boot from floppy or CD", but I can't find it in the latest version? I remember having to do one for a friend and could only make a floppy, but then copied this to a CD, as the friends pc didn't have a floppy drive.

You used to be able to use this bootable floppy or CD to boot the pc with, then run the anti virus programe from there, like in DOS mode. First make sure the BIOS setting is enabled (for the needed floppy or CD) as the 1st boot.

I think F-secure does one? If you can do this I'm sure it will make a better job of finding the hidden file that recreates the ~.exe file.

Hope this helps

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#337929 - 23rd Jul 2009 3:49pm Re: ~.exe virus? [Re: diggingdeeper]
topofthepops Offline

Addict

Registered: 2nd Nov 2008
Posts: 218
Loc: Wallasey
Originally Posted By: diggingdeeper
Thanks Mark - I had checked with Spybot startup tool, but YES it is there in msconfig under HKLM/Microsoft/Windows/currentversion/run

But I still don't know if it a goody or a baddy

Spybot and AVG don't recognise it as a baddy and none of the other virus companies mention it in there lists of baddies as far as I can see.


A good little programe that gives extra info for whats running on your pc Process Explorer v11.33, By Mark Russinovich. It doesn't install, you just run it.

I don't know if we are allowed to do direct links for files but here it is if you want to try it:

Process Explorer in a zip file

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#337943 - 23rd Jul 2009 5:49pm Re: ~.exe virus? [Re: topofthepops]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9986
Loc: Birkenhead
It did turn out to be a Trojan, as I suspected by the way it tried to behave - it was formally identified on 4th Jan 2009, the day after I was playing with it (or it was trying to play with me!).

It concerns me that I have security very well clamped down on my computers AND I am very careful what I run on my computer (I have been an IT professional for 32 years) yet this little blighter still sneaked in TWICE now - if it has infiltrated my computer with the care I take, there must be an awful lot of computers infected by it out there.

To put peoples mind at rest, most firewalls will stop this Trojan from talking back home, BUT I don't know if Windows Firewall will, it is partly disguised as a microsoft program and may be trusted by the microsoft system, I can't find out without risking my system and having to do an 8 hour recovery, not my favourite past-time.
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#337990 - 23rd Jul 2009 8:15pm Re: ~.exe virus? [Re: diggingdeeper]
topofthepops Offline

Addict

Registered: 2nd Nov 2008
Posts: 218
Loc: Wallasey
Do you know if you have completley "bannished" it yet?

I'm as careful as you said you are & I have been lucky upto now & never had a virus/trojan etc. Maybe I shouldn't have said that doh

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#338003 - 23rd Jul 2009 9:08pm Re: ~.exe virus? [Re: topofthepops]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9986
Loc: Birkenhead
Originally Posted By: topofthepops
Do you know if you have completley "bannished" it yet?

I'm as careful as you said you are & I have been lucky upto now & never had a virus/trojan etc. Maybe I shouldn't have said that doh
It doesn't make any difference, on my computers it is completely blocked from doing anything. I have deleted the file and done a complete registry clean. It isn't one of these persistent little things (seen enough of those in my job, heal six files and by then another ten have got infected), it just is very sneaky how it gets on! Got to admit, I am very impressed that it has got me twice, six months apart, nothing else has ever got in.
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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