Greetings. This site looks like a great source of info. Hope someone can help me. I have a svchost process consuming 99% of my cpu. Needless to say, this is killing everything else. I've run HijackThis and AVG AV software. I recognize all entries in HJT output. AVG passes clean. No wierd entries in the registry/Run key. TFAK and TDS trojan hunters show nothing. Another ideas on another course of action (besides reformat/re-install!). Thanks, in advance. Regards, Slim
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Run-away svchost.exe process - trojan? 1
- Thread starter SlimPick
- Start date
diogenes10
Technical User
I dont know a specific answer to your question, two general comments:
A program called cwshredder helps some with problem entries-from same place hijack this comes from
pestpatrol has an on-line scan-its kind of a leader for their product, it will identify stuff, but you have to then buy the product to fix it--but if it would happen to identify something for you, that might give you an idea for a next step.
A program called cwshredder helps some with problem entries-from same place hijack this comes from
pestpatrol has an on-line scan-its kind of a leader for their product, it will identify stuff, but you have to then buy the product to fix it--but if it would happen to identify something for you, that might give you an idea for a next step.
- Thread starter
- #3
I appreciate the prompt response, Diogenes10. I ran the scanner which turned up a bunch of spyware cookies but no proggies or anything else to explain the 99% cpu usage of svchost.exe. I'm still trying to get a handle on it. What say ye all? - Slim
diogenes10
Technical User
3 svchost entries in this table, maybe they'll help you work out a clue for next step.
I've run into this before. It was a conflict with another program (Clean Slate, a poor lockdown tool), but others may do the same thing.
Have you tried closing other programs one at a time (from task manager) to see if it drops back to normal 0%?
Have you tried closing other programs one at a time (from task manager) to see if it drops back to normal 0%?
-
1
- #6
Hi !
For windows xp
Use CMD prompt , and
TASKLIST /SVC
to see whats running under the SVCHOST's sessions.
[tt]
Image Name PID Services
========================= ====== =============================================
System Idle Process 0 N/A
System 4 N/A
smss.exe 596 N/A
csrss.exe 1044 N/A
winlogon.exe 1068 N/A
services.exe 1116 Eventlog, PlugPlay
lsass.exe 1128 PolicyAgent, ProtectedStorage, SamSs
svchost.exe 1296 RpcSs
svchost.exe 1456 AudioSrv, Browser, CryptSvc, Dhcp, dmserver,
ERSvc, EventSystem,
FastUserSwitchingCompatibility, helpsvc,
lanmanserver, lanmanworkstation, Netman,
Nla, RasMan, Schedule, seclogon, SENS,
SharedAccess, ShellHWDetection, srservice,
TapiSrv, TermService, Themes, TrkWks,
uploadmgr, W32Time, winmgmt, WZCSVC
svchost.exe 1784 Dnscache
svchost.exe 1796 Alerter, LmHosts, RemoteRegistry, WebClient
spoolsv.exe 1956 Spooler
alg.exe 260 ALG
avgserv.exe 292 AvgServ
cvpnd.exe 308 CVPND
GEARSEC.EXE 672 GEARSecurity
nvsvc32.exe 700 NVSvc
Explorer.EXE 1664 N/A
avgcc32.exe 2188 N/A
MXOaldr.exe 3964 N/A
MBM5.EXE 336 N/A
CloneCDTray.exe 4028 N/A
iTouch.exe 1424 N/A
sstray.exe 3016 N/A
ctfmon.exe 2208 N/A
sgmain.exe 2820 N/A
sgbhp.exe 3304 N/A
WISPTIS.EXE 3332 N/A
svchost.exe 2056 stisvc
csrss.exe 1780 N/A
winlogon.exe 1968 N/A
Explorer.EXE 3848 N/A
avgcc32.exe 2484 N/A
MXOaldr.exe 3248 N/A
MBM5.EXE 3824 N/A
CloneCDTray.exe 788 N/A
iTouch.exe 2024 N/A
sstray.exe 900 N/A
ctfmon.exe 472 N/A
sgmain.exe 1036 N/A
sgbhp.exe 2140 N/A
iexplore.exe 1720 N/A
iexplore.exe 1820 N/A
iexplore.exe 2564 N/A
cmd.exe 2204 N/A
tasklist.exe 3656 N/A
wmiprvse.exe 2636 N/A
[/tt]
syar
For windows xp
Use CMD prompt , and
TASKLIST /SVC
to see whats running under the SVCHOST's sessions.
[tt]
Image Name PID Services
========================= ====== =============================================
System Idle Process 0 N/A
System 4 N/A
smss.exe 596 N/A
csrss.exe 1044 N/A
winlogon.exe 1068 N/A
services.exe 1116 Eventlog, PlugPlay
lsass.exe 1128 PolicyAgent, ProtectedStorage, SamSs
svchost.exe 1296 RpcSs
svchost.exe 1456 AudioSrv, Browser, CryptSvc, Dhcp, dmserver,
ERSvc, EventSystem,
FastUserSwitchingCompatibility, helpsvc,
lanmanserver, lanmanworkstation, Netman,
Nla, RasMan, Schedule, seclogon, SENS,
SharedAccess, ShellHWDetection, srservice,
TapiSrv, TermService, Themes, TrkWks,
uploadmgr, W32Time, winmgmt, WZCSVC
svchost.exe 1784 Dnscache
svchost.exe 1796 Alerter, LmHosts, RemoteRegistry, WebClient
spoolsv.exe 1956 Spooler
alg.exe 260 ALG
avgserv.exe 292 AvgServ
cvpnd.exe 308 CVPND
GEARSEC.EXE 672 GEARSecurity
nvsvc32.exe 700 NVSvc
Explorer.EXE 1664 N/A
avgcc32.exe 2188 N/A
MXOaldr.exe 3964 N/A
MBM5.EXE 336 N/A
CloneCDTray.exe 4028 N/A
iTouch.exe 1424 N/A
sstray.exe 3016 N/A
ctfmon.exe 2208 N/A
sgmain.exe 2820 N/A
sgbhp.exe 3304 N/A
WISPTIS.EXE 3332 N/A
svchost.exe 2056 stisvc
csrss.exe 1780 N/A
winlogon.exe 1968 N/A
Explorer.EXE 3848 N/A
avgcc32.exe 2484 N/A
MXOaldr.exe 3248 N/A
MBM5.EXE 3824 N/A
CloneCDTray.exe 788 N/A
iTouch.exe 2024 N/A
sstray.exe 900 N/A
ctfmon.exe 472 N/A
sgmain.exe 1036 N/A
sgbhp.exe 2140 N/A
iexplore.exe 1720 N/A
iexplore.exe 1820 N/A
iexplore.exe 2564 N/A
cmd.exe 2204 N/A
tasklist.exe 3656 N/A
wmiprvse.exe 2636 N/A
[/tt]
syar
- Thread starter
- #9
Great responses all. I've run "tasklist /svc" (syar2k3) and see that the offending service is the dreaded RPCSS. I got the PID from Task Manager and "tasklist /m" shows me the dlls for that service as follows: (service name - PID - dlls)
svchost.exe 1068 ntdll.dll, kernel32.dll, ADVAPI32.dll, RPCRT4.dll, rpcss.dll, msvcrt.dll,
WS2_32.dll, WS2HELP.dll, USER32.dll,GDI32.dll, Secur32.dll, userenv.dll,mswsock.dll, sselsp.dll, wshtcpip.dll, wshisn.dll, WSOCK32.dll, DNSAPI.dll,
iphlpapi.dll, winrnr.dll, WLDAP32.dll, rasadhlp.dll, CLBCATQ.DLL, ole32.dll, OLEAUT32.dll, COMRes.dll, VERSION.dll,uxtheme.dll
So... verify/replace these dlls with Micro$oft? Search my harddrive for them and delete if bogus? Any obvious trojans here? Let the good times roll. What do you all think? Regards, Slim
svchost.exe 1068 ntdll.dll, kernel32.dll, ADVAPI32.dll, RPCRT4.dll, rpcss.dll, msvcrt.dll,
WS2_32.dll, WS2HELP.dll, USER32.dll,GDI32.dll, Secur32.dll, userenv.dll,mswsock.dll, sselsp.dll, wshtcpip.dll, wshisn.dll, WSOCK32.dll, DNSAPI.dll,
iphlpapi.dll, winrnr.dll, WLDAP32.dll, rasadhlp.dll, CLBCATQ.DLL, ole32.dll, OLEAUT32.dll, COMRes.dll, VERSION.dll,uxtheme.dll
So... verify/replace these dlls with Micro$oft? Search my harddrive for them and delete if bogus? Any obvious trojans here? Let the good times roll. What do you all think? Regards, Slim
Hey!
Don't delete anything .
I recommend you to disable system restore
Run LSPFIX
RUN stinger
reboot
enable system restore again
![[reindeer2]](/data/assets/smilies/reindeer2.gif "[reindeer2] [reindeer2]")
syar
Don't delete anything .
I recommend you to disable system restore
Run LSPFIX
RUN stinger
reboot
enable system restore again
syar- Thread starter
- #13
housecall.trendmicro.com is a good call. I had to drop the bomb on the hard drive and rebuild. I've tried a few firewalls (Kerio and Tiny) but don't like the performance hit. Will have to decide on something. Case closed for me now. Thanks to all. Regards.
lildutchman
Technical User
Hey noobish,
I'm having the same issue as you. my explorer.exe is using at least 90% CPU and the remaining 10% is used either by a svchost or system idle....
have you had any luck on figuring out the culprit on yours??
I'm having the same issue as you. my explorer.exe is using at least 90% CPU and the remaining 10% is used either by a svchost or system idle....
have you had any luck on figuring out the culprit on yours??
Up to date Antivirus? Run an online scan to verify that you're clean?
for online scan links.
for online scan links.
lildutchman
Technical User
I ran Norton (with latest vir def) and found nothing. I ran Ad Aware 6.0 and found maybe 3 things that I deleted and rebooted, yet I'm still getting the same issue. I tried ending as many processes I could as well as fragmenting the hd and doing a disk cleanup....but I still get the same result.....100% CPU usage for 15 min or more while trying to open IE.
Ok...I also tried running Spyware Sweeper and Spyware Gaurdian as well. All though it found maybe 3 instances of adware in the registry I still am having the same issues...Whenever I try to open IE, the CPU usage shoots to 100% for about 2-3 minutes then will open. This happens on any page i got to (even if I return to a previous page)
Does anyone have any ideas on what might be causing this hangup??
Ok...I also tried running Spyware Sweeper and Spyware Gaurdian as well. All though it found maybe 3 instances of adware in the registry I still am having the same issues...Whenever I try to open IE, the CPU usage shoots to 100% for about 2-3 minutes then will open. This happens on any page i got to (even if I return to a previous page)
Does anyone have any ideas on what might be causing this hangup??
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