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33 Ways to Check for Trojans etc.

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Name: murve
Date: June 27, 2002 at 08:15:31 Pacific
Comment:

Here are the 33 start up places from which a TROJAN, VIRUS, WORM, can run.

1) %windir%\Start Menu\Programs\StartUp
2) %windir%\All Users\Start Menu\Programs\StartUp
3-4) the load= and run = lines in win.ini
5-9) the Run, RunOnce, RunOnceEx, RunServices and RunServicesOnce keys
under Hkey_Local_Machine\Software\Microsoft\Windows\CurrentVersion
10-11) the Run and RunOnce keys under

Hkey_Current_User\Software\Microsoft\Windows\CurrentVersion
12) subkeys (Static VxDs) under
Hkey_Local_Machine\System\CurrentControlSet\Services\VxD\
13-14) the [386enh] and [boot] sections of system.ini (this includes the
scrnsave.exe= line in system.ini which can be used to run things on your
system (like the infamous McafeeScreenScan))
15) the IOSUBSYS folder (drivers load automatically)
16) the VMM32 folder (drivers that take precedence over those built into vmm32.vxd)
17) config.sys
18) autoexec.bat
19) winstart.bat
Bonus item - files can be deleted or renamed from the wininit.ini file.

20] [HKEY_CLASSES_ROOT\exefile\shell\open\command] @="\"%1\" %*"
21] [HKEY_CLASSES_ROOT\comfile\shell\open\command] @="\"%1\" %*"
22] [HKEY_CLASSES_ROOT\batfile\shell\open\command] @="\"%1\" %*"
23] [HKEY_CLASSES_ROOT\htafile\Shell\Open\Command] @="\"%1\" %*"
24] [HKEY_CLASSES_ROOT\piffile\shell\open\command] @="\"%1\" %*"
25]
[HKEY_LOCAL_MACHINE\Software\CLASSES\batfile\shell\open\command]
@="\"%1\" %*"
26]
[HKEY_LOCAL_MACHINE\Software\CLASSES\comfile\shell\open\command]
@="\"%1\" %*"
27]
[HKEY_LOCAL_MACHINE\Software\CLASSES\exefile\shell\open\command]
@="\"%1\" %*"
28]
[HKEY_LOCAL_MACHINE\Software\CLASSES\htafile\Shell\Open\Command]
@="\"%1\" %*"
29]
[HKEY_LOCAL_MACHINE\Software\CLASSES\piffile\shell\open\command]
@="\"%1\" %*"

The key should have a value of Value "%1 %*".

Backdoor example:
[HKEY_CLASSES_ROOT\exefile\shell\open\command] @="\"trojan.exe%1\" %*"

With such registry entries, the trojan.exe is executed each time
an exe/pif/com/bat/hta is executed.


30] system.ini
[boot]
Shell=Explorer.exe trojan.exe

31]
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunServices]

32] [HKEY_CURRENT_USER\Software\Mirabilis\ICQ\Agent\Apps\test]
"Path"="test.exe" "Startup"="c:\\test"
"Parameters"="" "Enable"="Yes"

33] [HKEY_CURRENT_USER\Software\Mirabilis\ICQ\Agent\Apps\
This key includes all the APPS which are executed IF ICQNET
Detects an Internet Connection.

Think this might help anyone with Trojans
all the best and cheers,
murve



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Response Number 1
Name: WhitPhil
Date: June 27, 2002 at 08:25:28 Pacific
Reply:

And/or download and run the Startuplog from http://home.earthlink.net/~rmbox/Reticulated/Toys.html

It will list all these locations and others.


0

Response Number 2
Name: Paul
Date: June 27, 2002 at 12:11:23 Pacific
Reply:

Uhh, I was looking @ my registry (W2k/sp2) my hkey reg. keys reflect the following value "%1" %* rather than "%1 %*"
Do I have a problem.......Paul


0

Response Number 3
Name: Tank863
Date: June 27, 2002 at 13:51:01 Pacific
Reply:

murve,

Thanks for the info...

I will add it to my list of stuff...

Tank863


0

Response Number 4
Name: murve
Date: June 27, 2002 at 14:40:10 Pacific
Reply:

hi tank
glad to be of service
cheers,
murve


0

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