HIJACK
THIS USAGE
Soda_Popinsky has
very kindly allowed this tutorial of his to be hosted on the TAZ.
You can find the original post here:
http://www.antionline.com/showthread.php?s=&threadid=255989
Sources
(I used them a lot)
http://www.mjc1.com/mirror/hjt/
http://hjt.wizardsofwebsites.com/
What Hijack This is for, is to
search key area’s of your computer that
are commonly used to change your browsers settings. It doesn’t scan
them, it shows you everything, and it’s your decision what can stay and
what can go. Most of the entries Hijack This will come up with are
legit, so it can make Hijack This somewhat tricky. You have to
determine what stays and what goes.
Download Hijack this
http://209.133.47.200/~merijn/files/HijackThis.exe
If you have used ad-aware,
spybot, or any other spyware removal
software since your last boot, reboot your computer. Open it, click
”config” in the bottom right of the window.
edit- Because of malware
restricting access to the site, merjin moves the download links around.
http://www.spywareinfo.com/~merijn/downloads.html
It should look like this when you
run it:
http://www.mjc1.com/mirror/hjt/begin.png
Main settings:
Basic configuration Make sure
safe mode and backups are turned on,
as well as processes. Safe mode and backups will help you if you screw
up.
Ignore list:
Used to help clean up your
results. When you scan, you can ignore results you know are legit and
they will be moved here.
Backups
When you fix entries in Hijack
This, they will appear here as backups, given that you’re setting is
turned on.
Misc Tools:
Generate Startup Log - I’ve never
used it, but it does what it says.
Shows you autoexec.bat and other things that boot up with your pc.
Uninstall
Check for update - I didn’t even
know that existed until now…
The process!
Click scan in the bottom left
corner, if you don’t see it, click back in the bottom right corner.
Should look like this:
http://www.mjc1.com/mirror/hjt/fix.png
A whole bunch of crazy lookin’
files will appear in the box above.
About now, you have to start using common sense. If you see something
like:
R0 -
HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.somekindapornsite.com/
Where the website shown is
something you want nothing to do with,
then check it. Basically, you just need to look for entries that look
funny, google them, and see if they are commonly listed as a hijack or
spyware.
Here is a section from http://hjt.wizardsofwebsites.com/
| Quote: |
| Two Letter Codes After the running processes, the list of entries found by Hijack This begins. Each entry starts with a 2-letter code to say what it is. According to Hijack This' Info, heres what each code means: R - Registry, StartPage/SearchPage changes R0 - Changed registry value R1 - Created registry value R2 - Created registry key R3 - Created extra registry value where only one should be F - IniFiles, autoloading entries F0 - Changed inifile value F1 - Created inifile value N - Netscape/Mozilla StartPage/SearchPage changes N1 - Change in prefs.js of Netscape 4.x N2 - Change in prefs.js of Netscape 6 N3 - Change in prefs.js of Netscape 7 N4 - Change in prefs.js of Mozilla O - Other, several sections which represent: O1 - Hijack of auto.search.msn.com with Hosts file O2 - Enumeration of existing MSIE BHO's O3 - Enumeration of existing MSIE toolbars O4 - Enumeration of suspicious autoloading Registry entries O5 - Blocking of loading Internet Options in Control Panel O6 - Disabling of 'Internet Options' Main tab with Policies O7 - Disabling of Regedit with Policies O8 - Extra MSIE context menu items O9 - Extra 'Tools' menuitems and buttons O10 - Breaking of Internet access by New.Net or WebHancer O11 - Extra options in MSIE 'Advanced' settings tab O12 - MSIE plugins for file extensions or MIME types O13 - Hijack of default URL prefixes O14 - Changing of IERESET.INF O15 - Trusted Zone Autoadd O16 - Download Program Files item O17 - Domain hijack O18 - Enumeration of existing protocols O19 - User stylesheet hijack There is no need to memorize all of these, just read through them so you are familiar with what HJT detects. Legitimacy Check In the following sections, you will be asked to "check if a url is legitimate". This means deciding if it is a URL that user would want to visit, or if it is a likely hijacker. URLs that you recognize such as Google, Yahoo!, a news website, or a ISPs website are clearly legitimate items. They do not need to fixed. If you do not recognize an item-go the URL. If the site has unending popup traps, or is in the domain of a known spyware (eg coolwwwsearch.com, gator.com, new.net, etc) is not a legitimate item. Most hijackers are sponsored search engine/portal sites. Usually they are pretty easy to detect. If it is a portal site with tons of links packed into one page, with categories such as gambling, insurance, computers, and adult, you can bet its a browser hijacker that should be fixed. If it is a search engine with the words "Pay Per Click" anywhere fix it. If it is a search engine with several or many entries for it in the R* section of Hijack This, you can also bet that its forcing itself on the user. If your not sure, ask the person if they use that site or not. R - Registry, StartPage/SearchPage changes Any entries whos 2 letter code begins with R should be checked to see if the URL is legitimate. Throughout this tutorials I will say "check if its legit". To do this, use the "Legitimacy Check" rules at the top of this tutorial. R0-Advanced Info R1-Advanced Info R2-Advanced Info R3-Advanced Info F - IniFiles, autoloading entries Basically anything beginning with "F0" is bad and should be fixed. F1 entries can be good or bad. Google the filename to find out what it is. F0-Advanced Info F1-Advanced Info N - Netscape/Mozilla StartPage/SearchPage changes Items that start with N are related to Netscape. These are similar to the R entries. Follow the rules for deciding if a URL is legitimate. Netscape homepages are not hijacked as often as IE though. N1-Advanced Info N2-Advanced Info N3-Advanced Info N4-Advanced Info O - Other, several sections which represent: O1 - Hijack of auto.search.msn.com with Hosts file 01 entries are entries in the HOSTS file. HOSTS is a way of redirecting a URL to an IP. It can be used for ad blocking, speeding up internet access, or Hijacking. If multiple URLs point to the same IP address, fix them all (UNLESS THAT IP ADDRESS IS 0.0.0.0 OR 127.0.0.1). This shows up a lot O1 - Hosts: 216.177.73.139 auto.search.msn.com O1 - Hosts: 216.177.73.139 search.netscape.com O1 - Hosts: 216.177.73.139 ieautosearch They should all be fixed, see how it redirects all searches to 216.177.73.139 (type that IP in your browser for an example of non-legit page). O1-Advanced Info O2 - Enumeration of existing MSIE BHO's The Browser Helper Object. Can't browse with em, cant browse without em. These are sort of plugins for the browser. Each has a unique, identifying number and a filename. Use TonyKlein's BHO list to check if each one is good or bad http://www.spywareinfo.com/bhos/ After a few logs, you will start to recognize which BHOs are safe (such as MSN Radio and NAV Antivirus). Note: any BHO with ClientMan Or Clien~1 in the filename should be fixed. Sometimes spyware tricks you into thinking its legit by using a safe-sounding filename. Check each BHO carefully! 02-Advanced Info O3 - Enumeration of existing MSIE toolbars 03 entries are toolbars in web browsers. Most are harmless, but many bad hijackers add toolbars to the browser. If it is named "Yahoo Companion" or Google Toolbar, or something of the sort, its probably legit. You can find out what a Toolbar is at TonyKlein's list http://www.spywareinfo.com/toolbars/ Any toolbar with a random-seeming filename should be fixed. O3-Advanced Info O4- Enumeration of suspicious autoloading Registry entries Startups from the registry. Despite the name-many legit programs show up here. Ignore entries that you recognize to be from a legit program. Use this website to find out what the rest of the entries are. http://www.pacs-portal.co.uk/startu...tartup_full.htm 04-Advanced Info O5 - Blocking of loading Internet Options in Control Panel There is only one entry here, and it should be fixed. This entry stops the Internet Options from showing in Control Panel. It is used by Hijackers to hide themselves 05-Advanced Info O6 - Disabling of 'Internet Options' Main tab with Policies Internet Explorer restrictions. Unless you have used a security program to lock your browser settings, fix these. You won't know if the user has done this or not. You can ask them, but if they have a lot of spyware, its safe to say that they should be fixed. 06-Advanced Info O7 - Disabling of Regedit with Policies Restricted registry access using Windows System Policies. Fix this, unless you are using a computer where it may be there on purpose eg. lab/shared/school systems. 07-Advanced Info O8 - Extra MSIE context menu items Extra right click options. If you don't recognize it, search google. "Browser Pal" should always be fixed. Programs such as popup blockers or google toolbar often show up here. 08-Advanced Info O9 - Extra 'Tools' menuitems and buttons Extra toolbar buttons. If you don't recognize it as a legit program-search google. A simple search will usually reveal if its spyware. 09-Advanced Info O10 - Breaking of Internet access by New.Net or WebHancer Winsock Hijacks. Using old versions of Spyware removers can cause these problems! Spybot can usually fix them, or a specialized tool such as LSPFix. O10-Advanced Info O11 - Extra options in MSIE 'Advanced' settings tab Extra Advanced Options group in IE Adds another group of options in the Advanced section of IE's Internet Options, which are stored in the registry. CommonName does this. O11-Advanced Info O12 - MSIE plugins for file extensions or MIME types Internet Explorer plugins. Usually pretty harmless. Used by programs like Acrobat Reader. 012-Advanced Info O13 - Hijack of default URL prefixes Default Prefixes. Eviiil-always fix these. The default prefix (Stored in the registry) adds itself to the beginning of any URL where you did not enter the prefix. Default Prefix should be http://. O13-Advanced Info O14 - Changing of IERESET.INF Reset Web Settings Follow the rules for checking if a URL is legitimate. O14-Advanced Info O15 - Trusted Zone Autoadd Unwanted trusted zone site. This could be bad, but not many hijackers use them. The common one is free.aol.com. This entry can be fixed. O15-Advanced Info O16 - Download Program Files item ActiveX Controls These are downloaded when you play an online game, use iPix, etc. If it is from a known game site such as Yahoo or Pogo, or the Macromedia site, its legit. Other items you can search for to find out. I usually just do a quick check over these items. Always fix them if they seem to be dialers, adult, or casino software. 016-Advanced Info O17 - Domain hijack Domain hijacks always include an IP address, do a WHOIS on the IP address. If it comes up with a legitimate owner (like an ISP or college) leave it. Otherwise, fix these entries. O17-Advanced Info O18 - Enumeration of existing protocols Extra Protocols. These don't show up very often, but Google will tell you what they are. I have seen LOP and CommonName use them. O18-Advanced Info O19 - User stylesheet hijack Style sheet hijack. I have only seen 1 hijacker use this. If the filename is default.css, it can probably be fixed. You may want to tell the person not to fix it if they are using a custom CSS file in their browser (these are often used by colorblind, or vision disabled users). O19-Advanced Info |
Don’t remove things you aren’t sure of. If you need help, post your log
in the adware section of AO and some of us can help you decide what to
remove.
All done
Original Tutorial
Submitted by
Nokia for TheTAZZone-TAZForum
Originally posted on March 6th, 2006 here
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