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HijackThis automated log analyzer! Submit a log and you will receive ALL the information we have in our DB's on everything on your system INSTANTLY!


Click here to Run a Free Scan for isass.exe Related Errors

What is it?

What does it do?
It then transfers control of execution to the dropped file ISASS.EXE.

It deletes PWL files found on the system and performs key logging routines.

It runs on Windows 95, 98, NT, ME, 2000, and XP.

Also using:


Trend Micro has the full dirt ( HERE )

Fix isass.exe Errors: Free Scan

Recommended: Run a Free Performance Scan to automatically optimize memory, CPU and Internet Settings

isass.exe is Spyware!

Startup DB Entries:
[-=+(L4r1$)+=-(4nt1)-=+(V1ru$)=-+]"Added by the ASSIRAL.B WORM!" b
[Anti]"Added by the BROPIA.K WORM!" b
[CSNetManagerXp]"Added by the HIDER-O TROJAN!" b
[EDxMC110]"Added by the VB-NIA WORM!" b
[Isass]"Added by the FUTRO TROJAN!" b
[Kiamat Sudah Dekat_16_04]"Added by the PAHATIA.B WORM!" b
[Microsoft Hosts Service]"Added by a variant of the RBOT WORM!" b
[MicroSoft IE Sasser]"Added by the SDBOT.MX WORM!" b
[Microsoft Lsass Center]"Added by a variant of the SDBOT WORM!" b
[NvMsnW]"Added by the BROPIA.K WORM!" b

Service DB Entries:
Nothing Found


Every attempt has been made to ensure the information about isass.exe is accurate but alot of malware applications try to pose as valid applications. If it is something other than what was posted above please leave some feedback in the forum.
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User Comments
ChesterI HAVE A LAPTOP RUNNING WINDOWS XP PROFESSIONAL. WHEN I TRY TO BOOT UP IT STALES & A SYSTEM ERROR COMES UP... "Isass.exe - System Error X An invalid parameter was passed to a service or function." THEN MY LAPTOP KEEPS REBOOTING OVER & OVER.
Microsoft ManThis is the sasser virus Maybe it should be in another section besides Adware / Spyware
I have a Windows XP desktop. I have found isass on the task manager but it says that it's a critical system process and I can't stop it.
GenesWhat is Isass.exe after all? It keep on killing my Laptop which running Windows XP Professional, while my most up-to-date antivirus and antispyware software display nothing suspicius...
Tonycan the problem be fixed
MadisonI'm having similar problem as chester. When i'm trying to log in to my user, there will be a system error which says "lsass.exe- system error. The specified Domain did not exist". But before this happens, there were frequent reboots by my computer. I'm running windows Xp professional.
terryI can't seem to load windowxp, I get a message isass.exe - Bad Image .. The application or Dll c:\windows\system23\MPR.dll is not a valid windows image. Please check this against your installation diskette.
mothyeah i'm gettin the same problem anyone found a fix for it??????? best thing that i found that works is to re-install windows into a new location
TonyIm running a laptop, and I get nothing, laptop turns on and then a long windows bar pops up! DLL C:\windows\system32\Lsasrv.dll not a valid windows image. How do I fix it, no safe mode or anything, Need help, in school, with comp classes and I need the laptop for school. Can anyone help? I see what it is, but nothing on how to fix it, tried to put my system and recovery cds in, but nothing happens... Is my laptop shot or what??? Would love any help I can get, im in Waveland, MS volunteering and need it bad for people, to show them how to get grants. Thanx for the time, T...
Khaz`ertEverytime I log off, sumthin pops up that says "Isass.exe - ending program" after that when i log on i find that my mozilla browser went missing! ut was deleted from my programs! also I cant access may task manager, it says "task manager is disabled by the administrator"! hell with that, IM THE ADMINISTRATOR! how can I fix my PC?
SherryHow can I download anything to fix the Lsass.exe system error when I can't stay booted up to get online?
wjkI have the same problem. I get "Isass.exe system error An I/O operation initiatedby ehre Registry failed unrecoverably. The registry could not read in, or write out or flush the files that contain the system's image of the registry" i click ok and my computer reboots and I get the same message. Help???
Security Risks - Adware Spyware
sndconfg16.exe | salm.exe | isass.exe | se.dll | kazza.exe | backweb-7288971.exe | bridge.dll | wtoolsa.exe | tkbellexe.exe | dl.exe | newdot~1.dll | wupdt.exe | mwsoemon.exe | saie.exe | webrebates0.exe | bxxs5.dll | funny.exe | 180ax.exe | randreco.exe | mssearchnet.exe | service.exe | webrebates1.exe | saap.exe | sais.exe | wsup.exe | backweb-137903.exe | sed.exe | alcmtr.exe | wo.exe | ffisearch.exe | optimize.exe | iadhide4.dll | backweb-8876480.exe | cdaengine0400.dll | istsvc.exe | newdotnet6_38.dll | Fvprotect.exe | Winupdate.exe | java.exe | cmesys.exe |