TROJ_EXEDOT.AH

This Trojan connects to URLs to download other possibly malicious files and configuration files.

It checks and reports to the URLs if certain processes are running on the system.

This Trojan may be downloaded by other malware/grayware/spyware from remote sites. It may be dropped by other malware.

Arrival Details

This Trojan may be downloaded by other malware/grayware/spyware from remote sites.

It may be dropped by other malware.

Autostart Technique

This Trojan adds the following registry keys to install itself as a Browser Helper Object (BHO):

HKEY_CLASSES_ROOT\main.BHO

HKEY_CLASSES_ROOT\main.BHO.1

HKEY_CLASSES_ROOT\AppID\main.DLL

HKEY_CLASSES_ROOT\Interface\{986A8AC1-AB4D-4F41-9068-4B01C0197867}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Browser Helper Objects\{AFD4AD01-58C1-47DB-A404-FBE00A6C5486}

HKEY_CLASSES_ROOT\TypeLib\{8E3C68CD-F500-4A2A-8CB9-132BB38C3573}

HKEY_CLASSES_ROOT\CLSID\{AFD4AD01-58C1-47DB-A404-FBE00A6C5486}

It registers itself as a BHO to ensure its automatic execution every time Internet Explorer is used by adding the following registry entries:

HKEY_CLASSES_ROOT\CLSID\{AFD4AD01-58C1-47DB-A404-FBE00A6C5486}\
InprocServer32
@ = {malware path and file name}

Download Routine

This Trojan saves the files it downloads using the following names:

• %User Temp%\{random file name}.TMP
• %Current Folder%\{malware name}.sig

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

NOTES:

It connects to the following URLs to download other possibly malicious files and configuration files:

• k.{BLOCKED}xad.com
• {BLOCKED}e.netstandpoints.com
• u.{BLOCKED}bar.com
• u.{BLOCKED}compile.com

It checks and reports to the URLs above if the following processes are running on the system:

• ACAAS.exe
• ACAEGMr.exe
• ACAIS.exe
• ACALS.exe
• ACASP.exe
• AFMain.exe
• AGIDSUI.exe
• ALMon.exe
• ALsvc.exe
• APVXDWIN.EXE
• AVGIDSAgent.exe
• AVGIDSMonitor.exe
• AVGIDSWatcher.exe
• AhnSD.exe
• AhnSDsv.exe
• AluSchedulerSvc.exe
• ApVxdWin.exe
• AxEetucexEllehS
• CAGlobal.exe
• CAGlobalLight.exe
• CAPPActiveProtection.exe
• CCSVCHST.EXE
• CClaw.exe
• CounterSpy.exe
• EMLPROUI.EXE
• EMLPROXY.EXE
• FAMEH32.exe
• FCH32.EXE
• FPAVServer.exe
• FProtTray.exe
• FSM32.EXE
• FSMA32.EXE
• FSMB32.exe
• HFACSvc.exe
• HrRes.exe
• IFace.exe
• ISWSVC.exe
• ITMRTSVC.exe
• K7EmlPxy.exe
• K7FWSrvc.exe
• K7PSSrvc.exe
• K7RTScan.exe
• K7SysMon.exe
• K7SysTry.exe
• K7TSMngr.exe
• K7TSecurity.exe
• MSASCui.exe
• MSProxy.ahn
• McNASvc.exe
• McProxy.exe
• McSACore.exe
• Mcshield.exe
• MpfSrv.exe
• MsMpEng.exe
• Nbrowser.exe
• Nip.exe
• Njeeves.exe
• Nsesvc.exe
• Nvcoas.exe
• ONLINENT.EXE
• ONLNSVC.EXE
• OPSSVC.EXE
• OcHealthMon.exe
• PAVSRV51.EXE
• PPCtlPriv.exe
• PSANHost.exe
• PSHost.exe
• PSUNMain.exe
• PXAgent.exe
• PXConsole.exe
• PavBckPT.exe
• PavFnSvr.exe
• PavPrSrv.exe
• PslmSvc.exe
• QOELoader.exe
• QUHLPSVC.EXE
• RavMon.exe
• RavTask.exe
• RsTray.exe
• SAVAdminService.exe
• SBCSSvc.exe
• SBCSTray.exe
• SCANMSG.EXE
• SCANWSCS.EXE
• SavService.exe
• SfCtlCom.exe
• SpIDerAgent.exe
• SpIDerMI.exe
• TMBMSRV.exe
• TRAYSSER.EXE
• TSCFCommander.exe
• TSCFPlatformCOMSvr.exe
• TmPfw.exe
• TmProxy.exe
• UPSCHD.EXE
• UfNai.exe
• UfSeAgnt.exe
• UfUpdUi.exe
• UmxAgent.exe
• UmxCfg.exe
• UmxFwHlp.exe
• UmxPol.exe
• WEBPROXY.EXE
• WinSSUI.exe
• Zanda.exe
• Zlh.exe
• acaas.exe
• acaegmr.exe
• acais.exe
• acals.exe
• acasp.exe
• acs.exe
• afmain.exe
• ahnsd.exe
• ahnsdsv.exe
• almon.exe
• alsvc.exe
• aluschedulersvc.exe
• apvxdwin.exe
• ashDisp.exe
• ashMaiSv.exe
• ashServ.exe
• ashWebSv.exe
• ashdisp.exe
• ashmaisv.exe
• ashserv.exe
• ashwebsv.exe
• aswUpdSv.exe
• aswupdsv.exe
• avengine.exe
• avesvc.exe
• avgam.exe
• avgamsvr.exe
• avgas.exe
• avgcc.exe
• avgcsrvx.exe
• avgemc.exe
• avgfws8.exe
• avgnsx.exe
• avgnt.exe
• avgrsx.exe
• avgtray.exe
• avguard.exe
• avgupd.exe
• avgupsvc.exe
• avgwdsvc.exe
• avgwsvc.exe
• avkproxy.exe
• avkservice.exe
• avktray.exe
• avkwctl.exe
• avmailc.exe
• avp.exe
• avpmapp.exe
• avwebgrd.exe
• bdagent.exe
• bdtupdateservice.exe
• caavguiscan.exe
• caglobal.exe
• cagloballight.exe
• capfasem.exe
• cappactiveprotection.exe
• casc.exe
• casecuritycenter.exe
• cavrid.exe
• ccSvcHst.exe
• ccenter.exe
• cclaw.exe
• ccprovsp.exe
• ccschedulersvc.exe
• ccsvchst.exe
• cctray.exe
• cfgmng32.exe
• consctl.exe
• counterspy.exe
• drwebscd.exe
• dvpapi.exe
• egui.exe
• ekrn.exe
• elogsvc.exe
• emlproui.exe
• emlproxy.exe
• escanmon.exe
• fameh32.exe
• fch32.exe
• forsp.exe
• fpavserver.exe
• fprottray.exe
• fsaua.exe
• fsav32.exe
• fsavgui.exe
• fsdfwd.exe
• fsgk32.exe
• fsgk32st.exe
• fsguidll.exe
• fsm32.exe
• fsma32.exe
• fsmb32.exe
• fspc.exe
• fsqh.exe
• fssm32.exe
• fsus.exe
• fulltiltpoker.exe
• gdfirewalltray.exe
• gdfwsvc.exe
• guard.exe
• guardxkickoff.exe
• guardxservice.exe
• guardxup.exe
• hcontain.exe
• hfacsvc.exe
• hpcsvc.exe
• hrres.exe
• hsvcmod.exe
• iface.exe
• isafe.exe
• itmrtsvc.exe
• k7emlpxy.exe
• k7fwsrvc.exe
• livesrv.exe
• mcagent.exe
• mcmscsvc.exe
• mcshell.exe
• mcsysmon.exe
• mcupdmgr.exe
• mcvsmap.exe
• mcvsshld.exe
• mdmcls32.exe
• msfwsvc.exe
• msksrver.exe
• npcsvc32.exe
• npfsvc32.exe
• npfuser.exe
• nprosec.exe
• nuaa.exe
• nvcsched.exe
• nvoy.exe
• op_mon.exe
• prevx.exe
• psksvc.exe
• qhfw.exe
• rsnetsvr.exe
• seccenter.exe
• spiderml.exe
• spidernt.exe
• spidersgate.exe
• spiderui.exe
• svcprs32.exe
• symlcsvc.exe
• vba32ldr.exe
• vbcmserv.exe
• vbsystry.exe
• vetmsg.exe
• virCatch.exe
• virusutilities.exe
• vrfwsock.exe
• vrfwsvc.exe
• vrmonnt.exe
• vrmonsvc.exe
• vrrepair.exe
• vrscan.exe
• vsmon.exe
• vsserv.exe
• winss.exe
• winssnotify.exe
• xcommsvr.exe
• zlclient.exe