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Win32.HLLW.Autoruner1.35000
Added to the Dr.Web virus database:
2013-04-09
Virus description added:
2013-04-19
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\GFUpd.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Rfwstub.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Runiep.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\GuardField.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RsAgent.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RsMain.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rfwmain.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RavStub.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RAV.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KASARP.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\VPTRAY.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ANTIARP.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kavstart.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KAVPFW.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kwatch.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kmailmon.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\PFW.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\HijackThis.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Trojanwall.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\TrojDie.KXP] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kissvc.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kav32.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AutoRun.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KPfwSvc.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rfwsrv.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\SREngLdr.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Rsaupd.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rfwProxy.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\QQDoctor.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\TrojanDetector.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ArSwp.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RSTray.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\CCenter.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RavMonD.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Ravservice.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RAVTRAY.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RavTask.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rsnetsvr.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ScanFrm.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RavMon.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360tray.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360safebox.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360rpt.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360safe.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AVP.COM] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AvMonitor.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\safeboxTray.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AVP.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Mmsk.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Ast.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KRegEx.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Frameworkservice.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AutoRunKiller.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\VPC32.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\WOPTILITIES.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Regedit.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KVWSC.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KVMonxp.KXP] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\IceSword.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Iparmor.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Nod32kui.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\nod32krn.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KVSrvXP.EXE] 'debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Navapsvc.EXE] 'debugger' = 'ntsd -d'
Infects the following executable system files:
Substitutes the following executable system files:
<SYSTEM32>\dllcache\asyncmac.sys with <SYSTEM32>\dllcache\asyncmac.sys.new
<DRIVERS>\asyncmac.sys with <DRIVERS>\asyncmac.sys.new
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
Executes the following:
<SYSTEM32>\sc.exe delete RsScanSrv
<SYSTEM32>\sc.exe delete RavCCenter
<SYSTEM32>\sc.exe delete RavTask
<SYSTEM32>\sc.exe delete ekrn
<SYSTEM32>\sc.exe delete RsRavMon
<SYSTEM32>\sc.exe delete avp
<SYSTEM32>\notepad.exe
<SYSTEM32>\rundll32.exe C:\rsv.dll,RSDK
<SYSTEM32>\net1.exe start server
<SYSTEM32>\taskkill.exe /im avp.exe /f
Terminates or attempts to terminate
the following user processes:
Modifies file system :
Creates the following files:
%WINDIR%\Fonts\WOHSLS.fon
%TEMP%\dll1.tmp
C:\rsv.dll
Sets the 'hidden' attribute to the following files:
C:\rsv.dll
<Full path to virus>
Deletes the following files:
%WINDIR%\Fonts\WOHSLS.fon
C:\rsv.dll
<DRIVERS>\asyncmac.sys
Moves the following files:
from <SYSTEM32>\dllcache\asyncmac.sys.new to <SYSTEM32>\dllcache\asyncmac.sys
Miscellaneous:
Searches for the following windows:
ClassName: 'AfxControlBar42s' WindowName: ''
ClassName: '' WindowName: ''
ClassName: 'Notepad' WindowName: ''
ClassName: 'MS_WINHELP' WindowName: ''
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