BackDoor.Siggen.32276

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kxescore.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kxesapp.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kxeserv.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kxedefend.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ksmsvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ksmgui.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KVMonXP.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kpopserver.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgemc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgnsx.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgrsx.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgcsrvx.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kwstray.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kxetray.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\vgchsvx.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\afwServ.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AvastUI.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\FilMsg.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avcenter.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avmailc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avwebgrd.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgnt.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Twister.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\SpIDerMl.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avfwsvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avshadow.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\spideragent.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\dwengine.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\spidernt.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\spiderui.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\QQPCMgr.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\QQPCMgr_tz_Setup.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\QQPConfig.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\QQPCAddWidget.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kvxp.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kvexpert.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kvol.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\QQPCTray.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\knsdsvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\knsdtray.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\knsdwsc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\knsd.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\QQPCUPDATE.EXE] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\QQPCRTP.EXE] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\SuperKiller.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kwsupd.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KSafeTray.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MsSvHost.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\KSafeSvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgtray.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgwdsvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\upsvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mfefire.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\V3PScan.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\V3SP.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Rsmgrsvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\VPSvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mfevtps.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MOBKbackup.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AvastSvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avguard.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\360safebox.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360hotfix.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\360speedld.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\РЮёґ№¤ѕЯ.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\krnl360svc.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\KVMonXP.kxp] '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\360se.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\zhudongfangyu.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360sd.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360rp.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\360SoftMgrSvc.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\qutmserv.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\TmProxy.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\UfSeAgnt.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\TMBMSRV.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\SfCtlCom.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\bdagent.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MPSVC1.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MPSVC2.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MPMon.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MPSVC.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\livesrv.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\seccenter.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\vsserv.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mcmscsvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\McNASvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Mcods.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mcagent.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\egui.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ekrn.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ccSvcHst.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\McProxy.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\McSACore.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msksrver.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\sched.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpfSrv.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\Mcshield.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mcsysmon.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mcvsshld.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\RsTray.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\RsAgent.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\RavMonD.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\CCenter.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kswebshield.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\kpfwsvc.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\kissvc.exe] 'Debugger' = 'ntsd -d'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\kpfw32.exe] 'Debugger' = 'ntsd -d'

Creates the following services:

[<HKLM>\SYSTEM\ControlSet001\Services\AppMgmt] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\27940740] 'Start' = '00000002'

Infects the following executable system files:

<SYSTEM32>\appmgmts.dll

Malicious functions:

Executes the following:

<SYSTEM32>\reg.exe export HKLM\SYSTEM\CurrentControlSet\Services\AppMgmt %WINDIR%\TEMP\r2aa00d55.txt

Restores hooked functions in System Service Descriptor Table (SSDT).

Modifies file system :

Creates the following files:

<SYSTEM32>\config\systemprofile\Application Data\Microsoft\CryptnetUrlCache\MetaData\60E31627FDA0A46932B0E5948949F2A5
<SYSTEM32>\config\systemprofile\Application Data\Microsoft\CryptnetUrlCache\Content\E6024EAC88E6B6165D49FE3C95ADD735
<SYSTEM32>\config\systemprofile\Application Data\Microsoft\CryptnetUrlCache\MetaData\E6024EAC88E6B6165D49FE3C95ADD735
<SYSTEM32>\config\systemprofile\Application Data\Microsoft\CryptnetUrlCache\Content\2BF68F4714092295550497DD56F57004
<SYSTEM32>\config\systemprofile\Application Data\Microsoft\CryptnetUrlCache\MetaData\2BF68F4714092295550497DD56F57004
<SYSTEM32>\config\systemprofile\Application Data\Microsoft\CryptnetUrlCache\Content\60E31627FDA0A46932B0E5948949F2A5
<SYSTEM32>\219E0620.tmp
%TEMP%\219E51E3.log
C:\Documents and Settings\Infotmp.txt
%WINDIR%\Temp\r2aa00d55.txt
%WINDIR%\Temp\s2fc275c7.txt
<SYSTEM32>\27940740.sys

Deletes the following files:

%WINDIR%\Temp\r2aa00d55.txt
<SYSTEM32>\219E0620.tmp
C:\Documents and Settings\Infotmp.txt
%WINDIR%\Temp\s2fc275c7.txt

Deletes itself.

Network activity:

Connects to:

'crl.verisign.com':80
'www.download.windowsupdate.com':80
'wpad.localdomain':80
'20#.#6.232.182':80

TCP:

HTTP GET requests:

crl.verisign.com/pca3.crl
www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootseq.txt
wpad.localdomain/wpad.dat
20#.#6.232.182/pki/crl/products/CodeSignPCA.crl

UDP:

DNS ASK crl.verisign.com
DNS ASK www.download.windowsupdate.com
DNS ASK crl.microsoft.com
DNS ASK www.ks##ewr.com
DNS ASK wpad.localdomain

Miscellaneous:

Searches for the following windows:

ClassName: 'CicLoaderWndClass' WindowName: ''
ClassName: '' WindowName: 'Program Manager'

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