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Network Ids Detects Smurf Attack

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#1 madgame8


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  • Local time:11:02 AM

Posted 06 April 2006 - 10:08 PM

Hi there,

I was wondering if someone can enlighten me with finding out the source of my problem:

Our ISS IDS has picked up that one of our machines is sending out ping request and maybe conducting a smurf attack. I examined the computer and ran a Trend Micro full scan, kav on line scan, and ad-adware. None of the programs found anything. I even ran rootkitrevealer and that did not show up with anything. The the symptoms are not persistent because the ping requests are happening at random times for a certain period. Even when the machine grabs a different ip, the ids sensors still resolve it to the same machine name as the culprit. In the firewall logs, it indicates that the fw is dropping ping requests to invalid ips such as Here is a Hijackthis log:

(anything in c:\svctools folder is legit)

Logfile of HijackThis v1.99.1
Scan saved at 12:39:32 PM, on 4/3/2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\Program Files\Cisco\CSAgent\bin\CSAControl.exe
C:\Program Files\Cisco\CSAgent\bin\leventmgr.exe
C:\Program Files\Apoint\Apoint.exe
C:\Program Files\Dell\QuickSet\quickset.exe
C:\Program Files\CyberLink\PowerDVD\DVDLauncher.exe
C:\Program Files\iPass\iPassConnect\downloader\ipccheck.exe
C:\OfficeScan NT\pccntmon.exe
C:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
C:\Program Files\Yahoo!\browser\ybrwicon.exe
C:\Program Files\Apoint\Apntex.exe
C:\Program Files\2Wire\2PortalMon.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\Cisco Systems\VPN Client\cvpnd.exe
C:\OfficeScan NT\ntrtscan.exe
C:\OfficeScan NT\tmlisten.exe
C:\Program Files\UltraVNC\winvnc.exe
C:\OfficeScan NT\OfcPfwSvc.exe
c:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnf.exe
C:\Program Files\Cisco\CSAgent\bin\okclient.exe
C:\Program Files\Yahoo!\Messenger\ymsgr_tray.exe
C:\Documents and Settings\lpavlovich\Desktop\RootkitRevealer.exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://yahoo.sbc.com/dsl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://red.clientapps.yahoo.com/customize/...//www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/customize/.../search/ie.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/customize/...//www.yahoo.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://yahoo.sbc.com/dsl
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://red.clientapps.yahoo.com/customize/...//www.yahoo.com
O2 - BHO: Yahoo! IE Services Button - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [OfficeScanNT Monitor] "C:\OfficeScan NT\pccntmon.exe" -HideWindow
O4 - HKLM\..\Run: [Share-to-Web Namespace Daemon] c:\Program Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
O4 - HKLM\..\Run: [YBrowser] C:\Program Files\Yahoo!\browser\ybrwicon.exe
O4 - HKLM\..\Run: [IPInSightMonitor 01] "C:\Program Files\SBC Yahoo!\Connection Manager\IP InSight\IPMon32.exe"
O4 - HKLM\..\Run: [2wSysTray] C:\Program Files\2Wire\2PortalMon.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKCU\..\Run: [Yahoo! Pager] C:\Program Files\Yahoo!\Messenger\ypager.exe -quiet
O4 - Global Startup: Cisco Security Agent.lnk = ?
O8 - Extra context menu item: &Google Search - res://c:\program files\google\GoogleToolbar1.dll/cmsearch.html
O8 - Extra context menu item: &Translate English Word - res://c:\program files\google\GoogleToolbar1.dll/cmwordtrans.html
O8 - Extra context menu item: &Yahoo! Search - file:///C:\Program Files\Yahoo!\Common/ycsrch.htm
O8 - Extra context menu item: Backward Links - res://c:\program files\google\GoogleToolbar1.dll/cmbacklinks.html
O8 - Extra context menu item: Cached Snapshot of Page - res://c:\program files\google\GoogleToolbar1.dll/cmcache.html
O8 - Extra context menu item: Similar Pages - res://c:\program files\google\GoogleToolbar1.dll/cmsimilar.html
O8 - Extra context menu item: Translate Page into English - res://c:\program files\google\GoogleToolbar1.dll/cmtrans.html
O8 - Extra context menu item: Yahoo! &Dictionary - file:///C:\Program Files\Yahoo!\Common/ycdict.htm
O8 - Extra context menu item: Yahoo! &Maps - file:///C:\Program Files\Yahoo!\Common/ycmap.htm
O8 - Extra context menu item: Yahoo! &SMS - file:///C:\Program Files\Yahoo!\Common/ycsms.htm
O9 - Extra button: Yahoo! Services - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (YInstStarter Class) - C:\Program Files\Yahoo!\Common\yinsthelper.dll
O16 - DPF: {6F750200-1362-4815-A476-88533DE61D0C} (Ofoto Upload Manager Class) - http://www.kodakgallery.com/downloads/BUM/..._1/axofupld.cab
O16 - DPF: {74D05D43-3236-11D4-BDCD-00C04F9A3B61} (HouseCall Control) - http://a840.g.akamai.net/7/840/537/2004061...all/xscan53.cab
O16 - DPF: {AB86CE53-AC9F-449F-9399-D8ABCA09EC09} (Get_ActiveX Control) - https://h17000.www1.hp.com/ewfrf-JAVA/Secur...loadManager.ocx
O16 - DPF: {D18F962A-3722-4B59-B08D-28BB9EB2281E} (PhotosCtrl Class) - http://photos.yahoo.com/ocx/us/yexplorer1_9us.cab
O16 - DPF: {EB387D2F-E27B-4D36-979E-847D1036C65D} (QDiagHUpdateObj Class) - http://h30043.www3.hp.com/sj/en/check/qdiagh.cab?326
O20 - AppInit_DLLs: csauser.dll
O23 - Service: Cisco Security Agent (CSAgent) - Unknown owner - C:\Program Files\Cisco\CSAgent\bin\CSAControl.exe" -t c (file missing)
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: OfficeScanNT RealTime Scan (ntrtscan) - Trend Micro Inc. - C:\OfficeScan NT\ntrtscan.exe
O23 - Service: OfficeScanNT Personal Firewall (OfcPfwSvc) - Trend Micro Inc. - C:\OfficeScan NT\OfcPfwSvc.exe
O23 - Service: Software Management Agent 1.3.1 (SMA1.3.1) - Everdream - c:\SvcTools\1.3.1\bin\lnchr.exe
O23 - Service: OfficeScanNT Listener (tmlisten) - Trend Micro Inc. - C:\OfficeScan NT\tmlisten.exe
O23 - Service: ZNIKJBFUULVINA - Sysinternals - www.sysinternals.com - C:\DOCUME~1\LPAVLO~1\LOCALS~1\Temp\ZNIKJBFUULVINA.exe

Let me know if you have any questions. This is for a Dell Latitude D-series laptop. Thanks!

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#2 OldTimer


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  • Local time:12:02 PM

Posted 16 April 2006 - 08:42 AM

Hello madgame8 and welcome to the BC HijackThis forum. I do not see any signs of viruses or malware in the log. I do see a search redirectorso let's clean that up while you are here.

Start HijackThis and click the Scan button to perform a scan. Look for the following items and click in the checkbox in front of each item to select it:R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://red.clientapps.yahoo.com/customize/...//www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/customize/.../search/ie.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/customize/...//www.yahoo.com
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://red.clientapps.yahoo.com/customize/...//www.yahoo.com

Now close ALL open windows except HijackThis and click the Fix Checked button to finish the repair.

As for a smurf attack, if you are the intermediary then you would need to filter the packets coming from the outside at the router. There would be no software on the machine that would be producing the ping requests but rather they would be coming from the spoofed IP addresses. I would take a look at the IP Insight software. It is used by various service providers to provide Quality of Service reports and part of the process is to ping various network locations for connectivity results. Since the software looks for a period of inactivity then that would coincide with the pinging happening at random times.

To disable the software use MsConfig and disable the IPMon32.exe startup item and see if the problem goes away.


I do not respond to PM's requesting help. That's what the forums are here for. Please use them so that others may benefit from your questions and the responses you receive.

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