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BleepingComputer.com -> Startup Programs Database -> Filenames that start with Y

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Name	Filename	Status	Description
xpsystem	y.exe	X	CoolWebSearch parasite variant
YAMAHA AC-XG Power Utility	yacpower.exe	?	YAMAHA AC-XG Power Utility - what does it do and is it required?
yaemu.exe	yaemu.exe	X	Added by the WIN32.DNSCHANGER.S TROJAN!
BitDefender for Yahoo! Messenger	yahmon.exe	U	BitDefender Antivirus for Yahoo! Messenger - free AV add-on for Yahoo! Messenger ... Read More
Yahoo Update	Yahoo.exe	X	Added by the YAHOO! TROJAN!
Winhost	yahoo.exe	X	Added by Troj/Delf-KM.
Task Manager	yahoo.exe	X	Added by the WORM_QUATIM.A Instant Messenger worm.
Yahoo Services	yahoo.exe	X	Unidentified Trojan.
ycentral	YahooCentral.exe	U	Related to Yahoo_Central_utility Note: Is it required. What does it do? Located in c:\progra~1\yahoo!\YCentral\ ... Read More
WINTASK	yahooicons.exe	X	Added by the W32/Mytob-HM worm. This infection, when started, connects to an IRC server where it sits on a channel awaiting commands. ... Read More
Yahoo! Pager	YahooMessenger.exe	N	Tray icon for Yahoo Messenger.
Messenger (Yahoo!)	YahooMessenger.exe	N	Yahoo! Messenger.
YahooMonitor1	YahooMonitor.exe	U	Added by the Spyware.IMMonitor Instant Messaging surveillance software. If this software was not installed purposely, it should be automatically remo ... Read More
Yahoo Messenger	Yahoomsg.exe	X	Added by an unidentified WORM or TROJAN!
Yahoo Instant Messengar	YahooMsgr.exe	X	Added by the SDBOT.GEN TROJAN!
Launch YahooPOPs! at Windows startup	YAHOOPOPS.EXE	N	YahooPOPs - enables free POP3/SMTP access to Yahoo! Mail through a service on localhost that emulates the web interface. Available via Start -> Prog ... Read More
Yahoo! Widget Engine	YahooWidgetEngine.exe	U	Yahoo Widget launcher. Only necessary if you have widgets that you would like to start automatically. ... Read More
yahoo_toolbar lptt01	yahoo_toolbar.exe	X	Variant of the RapidBlaster parasite (in a "yahoo_toolbar" folder in Program Files). It is not recommended you manually uninstall RapidBlaster but us ... Read More
yahoo_toolbar ml097e	yahoo_toolbar.exe	X	Variant of the RapidBlaster parasite (in a "yahoo_toolbar" folder in Program Files). It is not recommended you manually uninstall RapidBlaster but us ... Read More
yak tw	yak_tw.exe	X	Added by the Backdoor.Graybird backdoor/trojan.
Yankee Clipper III	YankClip.exe	N	Yankee Clipper III - 'A super powerful Windows clipboard extender/memory - now in its third generation. Handles Pictures, Richtext, URLS, etc - any si ... Read More
yaywxxw	yaywxxw.dll	X	A variant of the Adware.Virtumonde infection.
{91223DE9-F8E6-4FFD-8889-BE6784C18696}	yayyvuu.dll	X	Added by the Trojan.Virtumonde Trojan.
YA_WMP	ya_wmp.exe	X	Added by the W32.Yawmo worm that spreads through the Winny and Share file-sharing networks and may transmit sensitive information through these progra ... Read More
YBrowser	ybrwicon.exe	N	SBC Yahoo! Browser system tray icon
RGB video output	ycsrga.sys	X	Added by a variant of the Troj/Haxdor-Gen rootkit.
RGB video output	ycsrga.sys	X	Added by a variant of the Goldun.Fam rootkit.
YVPB video output	ycsrgb.sys	X	A variant of the Haxdoor rootkit.
YVPB video output	ycsrgb.sys	X	Added by a variant of the Troj/Haxdor-Gen rootkit.
YVPB video output	ycsrgb.sys	X	Added by a variant of the Goldun.Fam rootkit.
NDIS OSI	ycsvga.sys	X	A variant of the Troj/Haxdor-Gen rootkit.
NDIS OSI	ycsvgd.sys	X	The Troj/Haxdor-Fam rootkit.
ydhqzop	ydhqzop.sys	X	Added by the Backdoor.Rustock backdoor rootkit.
ydsvgd	ydsvgd.dll	X	Added by the Troj/Haxdoor-DA Trojan. Troj/Haxdoor-DA runs continuously in the background, providing a backdoor server which allows a remote intruder t ... Read More
YDTMain.exe	YDTMain.exe	X	Added by the ADWARE_180SOLUTIONS adware.
ulcdqsp	yedkreq.exe	X	Added by the W32/SillyFDC-BX removable media worm.
MSRegScan	YEKPND.exe	U	Added by the Spyware.EyeCandyMon surveillance software. Spyware.EyeCandyMon is a spyware program that monitors user activity, logs keystrokes, and cap ... Read More
{f8d02387-789a-4c0f-a1d8-8a93f33ee4df}	yephk.dll	X	A file used by the rogue antispyware app, SpywareQuake, to issue fake security alerts on your taskbar and download and install the SpywareQuake progra ... Read More
Tok-Cirrhatus-1959sarc	yesbron.com	X	Added by the W32/Brontok-R mass-mailing worm.
y1959sar	yesbron.com	X	Added by the W32/Brontok-AK mass-mailing worm.
{6f396a67-f473-48c9-9950-636ce17e584e}	yesgnhr.dll	X	Zlob Trojan that infects your computer with SpyCrush and displays fake security alerts in your Windows taskbar. ... Read More
yeTyezzd	yeTyezzd.sys	X	Added by the Backdoor.Rustock backdoor rootkit.
yeyqase	yeyqase.mis	X	Added by the Backdoor.Rustock backdoor rootkit.
{cbb430e6-5b1b-474a-9d7e-160d4fe74bea}	yfysupa.dll	X	A file used by the rogue antispyware app, SpywareQuake, to issue fake security alerts on your taskbar. ... Read More
{abef791f-947e-4cdf-83c3-e72a240afb67}	ygjun.dll	X	Part of the Zlob trojan that displays fake security alerts for the rogue anti-spyware program called SpywareLocked. ... Read More
You've Got Pictures Screensaver	ygpsstra.exe	U	AOL You've Got Pictures® Screensaver
{24c60b9b-26b5-4201-9f7a-fb9219356ae9}	yhbdupd.dll	X	A file used by the rogue antispyware app, SpywareQuake, to issue fake security alerts on your taskbar. ... Read More
Yahoo! Helper	yhelp.dll	X	Added by the Troj/YBHO-A password-stealing Trojan.
{49f29a27-2451-4314-a480-8d2481ce6c81}	yhjbbzf.dll	X	Zlob Trojan that installs VirusProtect Pro 3.4 and shows fake security alerts from your Windows taskbar. ... Read More
Winamp Update	yhn.exe	X	Added by the W32/Sdbot-ACR worm. When started, this infection connects to a remote IRC server where it waits for commands to execute. This will also ... Read More
AOL Instant Messenge	yimsgr.exe	X	Added by the W32/Tilebot-AA worm.
internet.exe	yinyin3345.vbs	X	Added by the XM97/Yini-A VIRUS, a Microsoft Excel macro virus!
chokestrap	yizgdux.dll	X	Zlob Trojan which installs the AntiSpyCheck rogue anti-spyware program. This program displays fake security alerts stating that your computer has a s ... Read More
Ykemml	Ykemml.sys	X	Added by the Troj/PcClient-K trojan.
MSRegScan	YKPND.exe	U	Added by the Spyware.YKPMD surveillance software. Spyware.YKPMD is a spyware program that monitors user activity, logs keystrokes, and captures screen ... Read More
YLive.exe	YLive.exe	X	Added by the Chinese program Yahoo! Assistant.
ymetray	ymetray.exe	N	Yahoo!_Music_utility ... Read More
Windows LoL Layer	ymllh.exe	X	Added by the W32/Rbot-FSU worm and IRC backdoor. W32/Rbot-FSU spreads to other network computers by exploiting common buffer overflow vulnerabilities, ... Read More
arsenicism	ymmzwd.dll	X	Zlob Trojan which installs the VirusProtect 3.8 rogue anti-spyware program. This program displays fake security alerts stating that your compute ... Read More
ymsgupdate2	ymsng2.exe	X	Added by the Trojan.Slapew.B Trojan that is used as a mail relay to send spam.
WINDOWS	ymssgr.exe	X	Added by the Troj/Bckdr-PS backdoor Trojan.
ynavmrcd.exe	ynavmrcd.exe	X	Added by the Troj/Dloadr-AVC Trojan.
complacential	yneid.dll	X	Added by a Zlob Trojan which installs AntiVirgear 3.8 and display fake security alerts in your Windows taskbar. ... Read More
yop	yop.exe	N	Dashboard Module for SBC Yahoo! Online_Protection
{b28b396b-b9e8-44f5-aa04-ed4f383d79ad}	yosdjh.dll	X	A file used by the rogue antispyware app, SpywareQuake, to issue fake security alerts on your taskbar. ... Read More
System	YPager.exe	X	Added by the JUNTADOR.K TROJAN! Note - this is not Yahoo! Messenger
Yahoo Messenger	YPager.exe	X	Added by the RBOT-QO WORM!
Yahoo! Pager	ypager.exe	N	Yahoo! Messenger allows you to send instant messages. Available via Start -> Programs ... Read More
ypager	ypager.exe	N	Yahoo! Messenger allows you to send instant messages. Available via Start -> Programs ... Read More
yahoo inc.	ypages.exe	X	Identified as a variant of the Backdoor.SDBot.62235D21 worm and IRC backdoor.
YPC	ypc.exe	U	Yahoo Parental controls - "Let you decide what type of sites and Yahoo! services your kids can access" ... Read More
yqzsypbgh	yqzsypbgh.cat	X	Added by the Backdoor.Rustock backdoor rootkit.
Yahoo HP Reminder 1.1	yr.exe	?	??
IE	Ysnd.exe	X	Added by the W32.Browa MIRC and Yahoo Instant Messenger worm.
YahooStock	ystckAO32.exe	X	Adtomi adware
y!tunnelbasic	YTBasic.exe	U	Y!TunnelBasic software provides additional features to Yahoo! Messenger. ... Read More
Y!TunnelPro	YTPro.exe	U	Spam, bot and ad blocker for Yahoo! Messenger from Digital Asphyxia
YTrayMagic Lite 1	YTRAYMAGIC.EXE	Y	YTrayMagic from YoconSoft automatically restores your tray icons after an Explorer(the windows shell) crash. Leave to run at startup since only those ... Read More
Y!TunnelPro	YTunnelPro.exe	U	Spam, bot and ad blocker for Yahoo! Messenger from Digital Asphyxia
ytzpoqw	ytzpoqw.dll	X	Added by the Backdoor.Rustock backdoor rootkit.
yugoslavia	yugoslavia.exe	X	Premium rate adult content dialer
duweculey	yujixit.exe	X	Added by the SDBOT.BRP WORM! ... Read More
icifati	yujixit.exe	X	Added by the SDBOT.ZZH WORM! ... Read More
iyelejiv	yujixit.exe	X	Added by the SDBOT.BJK WORM! ... Read More
jete	yujixit.exe	X	Added by the SDBOT.BRT WORM! ... Read More
lify	yujixit.exe	X	Added by a variant of the W32/SDBOT WORM! ... Read More
uneri	yujixit.exe	X	Added by the SDBOT.BOO WORM! ... Read More
upyxo	yujixit.exe	X	Added by the SDBOT.BIX WORM! ... Read More
uwyw.exe	yujixit.exe	X	Added by the SDBOT.BGB WORM! ... Read More
yumgo\'s homepage protector v1	YumgoHomepageProtector.exe	U	Yumgo's Homepage Protector ... Read More
{3baa1ad8-ee49-4772-bf0b-f55083e0f7aa}	yuspej.dll	X	Part of the Zlob trojan that displays fake security alerts for the rogue anti-spyware program called SpywareLocked. ... Read More
yutsubk	yutsubk.cat	X	Added by the Backdoor.Rustock backdoor rootkit.
yvbb01	yvbb01.dll	X	Added by the BKDR_HAXDOOR.JG backdoor Trojan. This infection utilizes the yvbb01.sys and yvbb02.sys rootkits. ... Read More
Miniport FT32	yvbb01.sys	X	Added by a variant of the Troj/Haxdor-Gen. rootkit.
Miniport FT	yvbb02.sys	X	Added by a variant of the Troj/Haxdor-Gen. rootkit.
yvdrgb	yvdrgb.dll	X	Added by a variant of the Troj/Haxdoor Trojan. This infection utilizes the ycsrgb.sys and the ycsrga.sys rootkits to hide itself. ... Read More
yvpp01	yvpp01.dll	X	Added by the Troj/Haxdoor-BM backdoor.
NDIS OSI32	yvpp01.sys	X	Added by the Troj/Haxdoor-BM rootkit.
yvprgb	yvprgb.dll	X	Added by the Troj/Haxdoor-CW Trojan. This infection utilizes the ycsrgb.sys rootkit. ... Read More
yvprgb	yvprgb.dll	X	Added by a variant of the Troj/Haxdoor Trojan. This infection utilizes the ycsrga.sys and ycsrgb.sys the rootkit to hide itself. ... Read More
yvsvga	yvsvga.dll	?	Added by the Troj/Haxdoor-CP Trojan. This infection utilizes the ycsvga.sys rootkit. ... Read More
{a2cd90b5-e5a2-4aac-a504-c964a6d499df}	yvvdj.dll	X	A file used by the rogue antispyware app, SpywareQuake, to issue fake security alerts on your taskbar. ... Read More
{6c69e319-0d03-47da-997a-36586cbc53b3}	ywbicim.dll	X	A file used by the rogue antispyware app, SpywareQuake, to issue fake security alerts on your taskbar. ... Read More
Ywvpysxl	Ywvpysxl.sys	X	Added by the Troj/Psupda-A Trojan.
ywwvc.exe	ywwvc.exe	X	Added by the Troj/StartPa-HR Trojan.
ywzizdon	ywzizdon.exe	X	Free_Scratch_Cards foistware
YY_Serer	YY_Serer.exe	X	Added by the Troj/GrayBird-S trojan.
yz.exe	yz.exe	X	Added by the VARDO TROJAN!
yzbgqap	yzbgqap.sys	X	Added by the Backdoor.Rustock backdoor rootkit.
YZH.SYS	YZH.exe	X	Added by the SOPHILY VIRUS!
Y'z Toolbar	YzToolBar.exe	U	Added by the Y'z Toolbar. Y'z Toolbar allows you to customize and change the appearance of the Windows Explorer toolbar. ... Read More

Status Key

Each entry in the database will have a Status assigned to it. The key to this status is the following:

Y - This status flag means that this entry should be left alone and be allowed to run as if it is unchecked it may break the functionality or use of a particular program.
N - This status flag means it is unnecessary to run this program automatically when Windows starts as you can run it manually when necessary.
U - This status flag means it is up to you whether or not you feel this program needs to run automatically.
X - This status flags means the item should definitely not start up automatically. Items that have this flag are generally malware such as viruses, trojans, hijackers, spyware but could also be programs that are not desirable to run on your computer.
? - This status flag means the status of this entry is unknown at this time and more research is necessary.

If you require assistance in removing one of these files you can ask us in the Startup Database Forum.

Disclaimer

It is assumed that users are familiar with the operating system they are using and comfortable with making the suggested changes. BleepingComputer.com will not be held responsible if changes you make cause a system failure.

This is NOT a list of tasks/processes taken from Task Manager or the Close Program window (CTRL+ALT+DEL) but a list of startup applications, although you will find some of them listed via this method. Pressing CTRL+ALT+DEL identifies programs that are currently running - not necessarily at startup. Therefore, before ending a task/process via CTRL+ALT+DEL just because it has an "X" recommendation, please check whether it's in MSCONFIG or the registry first. An example would be "svchost.exe" - which doesn't appear in either under normal conditions but does via CTRL+ALT+DEL. If in doubt, don't do anything.