recurring infections

T

troy

Msas is seemingly catching trojans on my xp
sys.Trojan.intell32 Trojan is constantly being found
after a scan. removal works but for a short time.
infected registry- HKEY_CLASSES_ROOT\clsid\{357A87ED-3E5D-
437d-B334-DEB7EB4982A3}, for example seems to occur quite
often. I also came back to my pc at one time to find
prompts about dowloading a file, op1.exe from
kaki206.brinkster.net.
is this a possible source? How can i track and or remove?

any help would be great
 
A

AndyManchesta

This Trojan is part of the Smitfraud Infection (Usually
its joined by either SpySherifff or PSGuard) and the
wallpaper gets changed to display a spyware warning, It
can also hook into explorer.exe so it starts with windows.

The CLSID you post relates to Trojan Alemod and this is
where things get nasty, It infects the wininet.dll file
with a file called oleadm32.dll and creates another file
called oleadm.dll so that any http requests sent through
wininet.dll will be passed through this trojan file, The
trojan file then reads the request info and sends details
to a few different domains. It does this by first setting
this registry key

HKLM\SYSTEM\CurrentControlSet\Control\Session
Manager\AllowProtectedRenames = 0x1

It then modifies the system file wininit.ini to swap the
infected wininet.dll (oleadm32.dll) with the real
wininet.dll. It can also set restrictions on the desktop
which blocks the "Remove Button" on Display Properties in
3 area's (Themes,Appearance & Desktop)


Copy the next part to notepad if needed so you can still
view it in safe mode:


Use Smitrem and Ewido (Smitrem to remove Intel32 and
related files if they exist plus perform a disk cleanup &
Ewido to check for any other problems)

Download Smitrem to your desktop

http://noahdfear.geekstogo.com/click counter/click.php?
id=1

Run the installer and then press Start to Extract the
files to the desktop, Do not run it yet.


Download the trial version of Ewido Security Suite here

http://www.ewido.net/en/download/

Install ewido.
During the installation, under "Additional Options"
uncheck "Install background guard" and "Install scan via
context menu".
Launch ewido
On the left side of the main screen click update
Click on Start and let it update.
DO NOT run a scan yet.

Reboot into safe mode (Reboot and keep tapping F8 then
choose safe mode from the list)

Run SmitRem

Open the SmitRem folder and double click the "RunThis"
file to start the tool , Follow the prompts on
screen. Wait for the tool to complete and disk cleanup to
finish.

Next Run Ewido

From the main menu click scanner then Complete system
scan, During the scan it will prompt you to clean files,
click "Remove" for anything detected

Finally reboot back into normal mode

You will need to reload your wallpaper as the SmitRem
tool will reset it, you can do this by right clicking
desktop and choosing properties, First check Theme and
set it to Windows XP then click the Desktop tab and
choose the one you want to use and press apply,

Let us know if you have any problems


Andy
 
A

AndyManchesta

While Im Posting here's the list of files targetted by
SmitRem (the ones that are polite enough to print)


Program Files
---------------

AntiVirusGold
PSGuard
Search Maid
Security IGuard
SpySheriff
Virtual Maid


%systemroot%\system32 / system
-------------------------------

gunist.exe
helper.exe
hhk.dll
hhk.dll.tcf
hookdump.exe
hp***.tmp
intel32.exe
intell32.exe
intmon.exe
intmonp.exe
msmsgs.exe
msole32.exe
ole32vbs.exe
oleadm.dll
oleadm32.dll
oleext.dll
param32.dll
perfcii.ini
pop_up.dll
searchdll.dll
shnlog.exe
svcnt.exe
winnook.exe
wldr.dll
wp.bmp
wppp.html
_delete_on_reboot__intmon.exe
_delete_on_reboot__intel32.exe
_delete_on_reboot__OLEADM.dll


%systemdrive%(Local Disk C: or system partition)
--------------------------------------------------

wp.exe
bsw.exe
wp.bmp
bsw.bmp
winstall.exe


%systemroot% (Windows folder)
----------------------------

desktop.html
popuper.exe
screen.html
sites.ini
uninstIU.exe
zloader3.exe

Then all the Favorites entries, Desktop Icons, Desktop
Shortcuts, StartMenu- Quick Launch , System32-System
icons

Locations looked in for a wininet.dll replacement
--------------------------------------------------

Listed in order of priority

%systemroot%\system32\dllcache
%systemroot%\$hf_mig$\KB890923\SP2QFE
%systemroot%\$hf_mig$\KB867282\SP2QFE
%systemroot%\$hf_mig$\KB883939\SP2QFE
%systemroot%\ServicePackFiles\i386



Thanks to NoAhdfear for a excellent removal tool :)

Andy
 

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