I ran Ad-Aware on our SBS 2003 server yesterday and it detected the ZLOB trojan. However, I updated and ran SpyBot S&D right before that and it didn't detect anything. I also ran Symantec Antivirus Corporate Edition 9.0, updated with the latest definitions (I use the unsupported script/tool to check for and auto-download definitions several times per day) and it didn't detect Zlob. I started a scan using Kaspersky Antivirus' on-line scanner, with the spyware/adware detection enabled and IT didn't find it.

This leads me to wonder if Ad-Aware isn't mistakenly reading something innocent, such as Quickbooks auto-updater or something else as the Zlob trojan?

Here's a fresh HJT scan:
Logfile of HijackThis v1.99.1
Scan saved at 10:57:13 AM, on 10/13/2006
Platform: Windows 2003 (WinNT 5.02.3790)
MSIE: Internet Explorer v6.00 (6.00.3790.0000)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Symantec AntiVirus\DefWatch.exe
C:\WINDOWS\system32\Dfssvc.exe
C:\WINDOWS\System32\dns.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\inetsrv\inetinfo.exe
C:\WINDOWS\system32\CBA\pds.exe
C:\Program Files\Microsoft SQL Server\MSSQL$SBSMONITORING\Binn\sqlservr.exe
C:\Program Files\Microsoft SQL Server\MSSQL$SHAREPOINT\Binn\sqlservr.exe
C:\PROGRA~1\Symantec\SYMANT~1\NSCTOP.EXE
C:\WINDOWS\system32\ntfrs.exe
C:\Program Files\Microsoft SQL Server\MSSQL$SBSMONITORING\Binn\sqlagent.EXE
C:\Program Files\Symantec AntiVirus\Rtvscan.exe
C:\WINDOWS\System32\wins.exe
C:\WINDOWS\system32\tcpsvcs.exe
C:\WINDOWS\system32\ams_ii\hndlrsvc.exe
C:\WINDOWS\system32\MsgSys.EXE
C:\WINDOWS\system32\ams_ii\iao.exe
C:\WINDOWS\system32\cba\xfr.exe
C:\Program Files\Exchsrvr\bin\exmgmt.exe
C:\Program Files\Exchsrvr\bin\mad.exe
C:\Program Files\Common Files\System\MSSearch\Bin\mssearch.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Exchsrvr\bin\store.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\rdpclip.exe
C:\WINDOWS\Explorer.EXE
C:\Program Files\Common Files\Intuit\QuickBooks\QBUpdate\qbupdate.exe
C:\Program Files\Microsoft SQL Server\80\Tools\Binn\sqlmangr.exe
C:\WINDOWS\system32\mmc.exe
C:\Program Files\Spybot - Search & Destroy\SpybotSD.exe
c:\windows\system32\inetsrv\w3wp.exe
D:\SharedData\John\HijackThis.exe

R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://companyweb
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://companyweb/_layouts/1033/user.aspx
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O3 - Toolbar: @msdxmLC.dll,-1@1033,&Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\system32\msdxm.ocx
O4 - HKLM\..\Run: [DWPersistentQueuedReporting] C:\PROGRA~1\COMMON~1\MICROS~1\DW\DWTRIG20.EXE -a
O4 - HKLM\..\Run: [vptray] C:\PROGRA~1\SYMANT~1\VPTray.exe
O4 - Startup: Server Management.lnk = C:\Program Files\Microsoft Windows Small Business Server\Administration\LaunchConsole.exe
O4 - Global Startup: QuickBooks Update Agent.lnk = C:\Program Files\Common Files\Intuit\QuickBooks\QBUpdate\qbupdate.exe
O4 - Global Startup: Service Manager.lnk = C:\Program Files\Microsoft SQL Server\80\Tools\Binn\sqlmangr.exe
O9 - Extra button: Related - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O9 - Extra 'Tools' menuitem: Show &Related Links - {c95fe080-8f5d-11d2-a20b-00aa003c157a} - C:\WINDOWS\web\related.htm
O14 - IERESET.INF: START_PAGE_URL=http://companyweb
O16 - DPF: {0EB0E74A-2A76-4AB3-A7FB-9BD8C29F7F75} (CKAVWebScan Object) - http://www.kaspersky.com/kos/eng/partner/d...can_unicode.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/microsoftupdat...b?1151734262453
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdat...b?1151734219343
O17 - HKLM\System\CCS\Services\Tcpip\Parameters: Domain = quality.charter.local
O17 - HKLM\Software\..\Telephony: DomainName = quality.charter.local
O17 - HKLM\System\CCS\Services\Tcpip\..\{1096E69F-3D87-4209-85B9-B5E421B1E677}: NameServer = 24.217.0.5,24.159.64.21
O17 - HKLM\System\CS1\Services\Tcpip\Parameters: Domain = quality.charter.local
O17 - HKLM\System\CS1\Services\Tcpip\..\{1096E69F-3D87-4209-85B9-B5E421B1E677}: NameServer = 24.217.0.5,24.159.64.21
O17 - HKLM\System\CS2\Services\Tcpip\Parameters: Domain = quality.charter.local
O17 - HKLM\System\CS2\Services\Tcpip\..\{1096E69F-3D87-4209-85B9-B5E421B1E677}: NameServer = 24.217.0.5,24.159.64.21
O20 - Winlogon Notify: NavLogon - C:\WINDOWS\system32\NavLogon.dll
O23 - Service: Symantec AntiVirus Definition Watcher (DefWatch) - Symantec Corporation - C:\Program Files\Symantec AntiVirus\DefWatch.exe
O23 - Service: Intel Alert Handler - Intel® Corporation - C:\WINDOWS\system32\ams_ii\hndlrsvc.exe
O23 - Service: Intel Alert Originator - Intel® Corporation - C:\WINDOWS\system32\ams_ii\iao.exe
O23 - Service: Intel File Transfer - Intel® Corporation - C:\WINDOWS\system32\cba\xfr.exe
O23 - Service: Intel PDS - Intel® Corporation - C:\WINDOWS\system32\CBA\pds.exe
O23 - Service: MSSQL$SHAREPOINT - Unknown owner - C:\Program Files\Microsoft SQL Server\MSSQL$SHAREPOINT\Binn\sqlservr.exe" -sSHAREPOINT (file missing)
O23 - Service: Symantec System Center Discovery Service (NSCTOP) - Symantec Corporation - C:\PROGRA~1\Symantec\SYMANT~1\NSCTOP.EXE
O23 - Service: QuickBooksDB - Intuit, Inc. - C:\PROGRA~1\Intuit\QUICKB~1\QBDBMgrN.exe
O23 - Service: SQLAgent$SHAREPOINT - Unknown owner - C:\Program Files\Microsoft SQL Server\MSSQL$SHAREPOINT\Binn\sqlagent.EXE" -i SHAREPOINT (file missing)
O23 - Service: Symantec AntiVirus - Symantec Corporation - C:\Program Files\Symantec AntiVirus\Rtvscan.exe

Hi John A.,

It looks like one of the false positives reported in this thread: Ad-Aware False Positives, SE1R126 12.10.2006

The Definition File was quickly re-released, to remove the false positives.

Should you think that a false positive has been detected, always post in this sub-section, as the Research Team monitor it constantly - Lavasoft Support Forums > Lavasoft - General Support > False Positives

Regards,

Spike

Thanks, Spike. I will keep that in mind in the future, in the unlikely event this should occur again.