Threat Description

Rootkit:​W32/Xanti.gen!A

Details

Aliases:Rootkit:​W32/Xanti.gen!A
Category:Malware
Type:Rootkit
Platform:W32

Summary



A program or set of programs which hides itself by subverting or evading the computer's security mechanisms, then allows remote users to secretly control the computer's operating system.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



Technical Details



Rootkit:W32/Xanti.gen!A is a Generic Detection that identifies malware attempting to create a device file on the computer named \Device\Beep.

About Generic Detections

Unlike signature or single-file detections, a Generic Detection does not identify a unique or individual malicious program. Instead, a Generic Detection looks for broadly applicable code or behavior characteristics that indicate a file as potentially malicious, so that a single Generic Detection can efficiently identify dozens, or even hundreds of malware. InstallationIf the malware manages to run, it will create the following files:

  • \SystemRoot\system32\cru629.dat
  • \SystemRoot\cru629.dat
  • \SystemRoot\system32\braviax.exe
  • \SystemRoot\braviax.exe

The malware may also drop additional malicious programs onto the system:

  • cru629.dat - Detected by Backdoor.Win32.Small.cbo, Trojan.Agent.AIER
  • braviax.exe - Detected by Trojan-Clicker.Win32.Delf.akw, Trojan.Crypt.EQ

When one of the following processes are executed:

  • winlogon.exe
  • svchost.exe
  • smss.exe
  • csrss.exe

The malware will create the following launchpoints in the Windows Registry:

  • HKLM\Software\Microsoft\Windows NT\CurrentVersion\Windows Appinit_dlls = "cru629.dat"
  • HKLM\Software\Microsoft\Windows\CurrentVersion\Run braviax = "braviax.exe"

It also places hook to NtQuerySystemInformation.

Activity

Once installed, the malware monitors the following processes/drivers and prevents them from running:

  • spdt.sys
  • gmer.sys
  • taskmon.sys
  • kernelw.sys
  • wowfx.dll
  • pctfw2.sys
  • symtdi.sys
  • symevent.sys
  • fltmgr.sys
  • bmbemuhl
  • ip6fw.sys
  • fmtr.sys
  • sdhelper.dll
  • wincom32.sys
  • rdriv.sys
  • mpfirewall.sys
  • sandbox.sys
  • filtnt.sys
  • bc_tdi_f.sys
  • bc_prt_f.sys
  • bc_pat_f.sys
  • bc_ngn.sys
  • bc_ip_f.sys
  • bc_hassh_f.sys
  • bcftdi.sys
  • bcfilter.sys
  • watchdog.sys
  • vsdatant.sys
  • kmd.exe
  • winavxx.exe
  • bolenjx.exe
  • bolenja.exe
  • rootkit_detektive.exe
  • autoruns.exe
  • vundofix.exe
  • trjscan.exe
  • tpsrv.exe
  • thguard.exe
  • symwsc.exe
  • superantispyware.exe
  • spyblock.dll
  • spbbcsvc.exe
  • sndsrvc.exe
  • sndmon.exe
  • sdtrayapp.exe
  • sbserv.exe
  • pskmssvc.exe
  • psimsvc.exe
  • pshost.exe
  • psctrls.exe
  • pifsvc.exe
  • pavsrv51.exe
  • pavprsrv.exe
  • lucoms~1.exe
  • lsetup.exe
  • ccsvchst.exe
  • ccproxy.exe
  • avengine.exe
  • avciman.exe
  • ashwebsv.exe
  • ashserv.exe
  • ashmaisv.exe
  • apvxdwin.exe
  • appsvc32.exe
  • aluschedulersvc.exe
  • gmer.exe
  • killbox.exe
  • avgupsvc.exe
  • avgamsvr.exe
  • avgw.exe
  • avgcc.exe
  • msmpeng.exe
  • printer.exe
  • svcntaux.exe
  • swdsvc.exe
  • avgas.exe
  • symlcsvc.exe
  • fwservice.exe
  • prevxcsi.exe
  • navilog
  • navapsvc.exe
  • globkill.exe
  • dss.exe
  • procmast.exe
  • combo.exe
  • defwatch.exe
  • ccsetmgr.exe
  • ccpwdsvc.exe
  • sdfix.exe
  • zcomservice.exe
  • zcodec.exe
  • zclient.exe
  • spywaredetector.exe
  • spybotsd.exe
  • spybot.exe
  • savscan.exe
  • sandboxieserver.exe
  • rtvscan.exe
  • pboptions.exe
  • pbcpl.exe
  • pavfnsvr.exe
  • overspy.exe
  • overseer.exe
  • op_mon.exe
  • outpost.exe
  • ofcdog.exe
  • nvctrl.exe
  • nsmdtr.exe
  • nortonupdate.exe
  • nod32ra.exe
  • nod32krn.exe
  • no32mon.exe
  • nlsupervisorpro.exe
  • njexplor.exe
  • nisum.exe
  • navw32.exe
  • navstub.exe
  • navapp.exe
  • myvideodaily2.exe
  • mwsoemon.exe
  • msssrv.exe
  • mcshield.exe
  • malswep.exe
  • malscr.exe
  • magiclink.exe
  • lsass32.exe
  • lsasrv.exe
  • livesrv.exe
  • little_helper2.exe
  • kpf4ss.exe
  • klswd.exe
  • klpf.exe
  • kavsvc.exe
  • kavss.exe
  • kav.exe
  • issvc.exe
  • isnotify.exe
  • ismini.exe
  • inetupd.exe
  • icmon.exe
  • iao.exe
  • hwpe2.exe
  • hitvirus.exe
  • hijackthis
  • hbtoeaddon.exe
  • hackmon.exe
  • gcasserv.exe
  • gcasdtserv.exe
  • fsm32.exe
  • fsbl.exe
  • fsav32.exe
  • fatbuster.exe
  • farsighter.exe
  • f-stopw.exe
  • f-sched.exe
  • eyetidecontroller.exe
  • dsentry.exe
  • cureit.exe
  • crypserv.exe
  • cpf.exe
  • cpd.exe
  • comboxfix.exe
  • combofix
  • ccpxysvc.exe
  • ccimscan.exe
  • ccevtmgr.exe
  • ccapp.exe
  • cavtray.exe
  • cavrid.exe
  • bdss.exe
  • bdmcon.exe
  • avz.exe
  • avsched32.exe
  • avpm.exe
  • avp.exe
  • avpcc.exe
  • avgemc.exe
  • avgagent.exe





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