Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Irfi' = 'regsvr32.exe /s %APPDATA%\Tawio\umeffye.dll'
Malicious functions
Executes the following (exploit)
- '<SYSTEM32>\rundll32.exe' HZLPoPa.dll,DllRegisterServer
Injects code into
the following system processes:
- %WINDIR%\syswow64\msiexec.exe
Searches for registry branches where third party applications store passwords
- [<HKCU>\Software\Microsoft\Internet Account Manager\Accounts]
- [<HKLM>\Software\Microsoft\Internet Account Manager]
- [<HKCU>\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts]
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Microsoft Outlook Internet Settings]
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook]
Modifies file system
Creates the following files
- C:\msdownld.tmp\as103a4c.tmp\tsk.dll
- %TEMP%\nameet.tmp
- %TEMP%\yrdaaq.tmp
- %TEMP%\piuhliu.tmp
- %TEMP%\suaf.tmp
- %TEMP%\ilri.tmp
- %TEMP%\yqgaha.tmp
- %TEMP%\ewtoud.tmp
- %TEMP%\asfuneyw.tmp
- %TEMP%\yfka.tmp
- %TEMP%\ziwu.tmp
- %TEMP%\anaq.tmp
- %TEMP%\puwiga.tmp
- %TEMP%\ozazizid.tmp
- %TEMP%\vuaxyr.tmp
- %TEMP%\savaw.tmp
- %TEMP%\xyidcyon.tmp
- %TEMP%\uwluoth.tmp
- %TEMP%\dafore.tmp
- %TEMP%\eqyb.tmp
- %APPDATA%\tawio\umeffye.dll
- %APPDATA%\saho\eqxyit.es
- %APPDATA%\riycu\inatavo.ohbyo
- %APPDATA%\nyqi\vetof.yxla
- %APPDATA%\saneyh\zyacexk.ov
- %APPDATA%\zupuba\ucqai.areco
- %TEMP%\qoveag.tmp
- %TEMP%\zuyvyv.tmp
- %APPDATA%\suno\bozowya.ytqe
- %TEMP%\vaop.tmp
- %TEMP%\wuzi.tmp
- %TEMP%\wuzi.tmp-shm
- %TEMP%\royw.tmp
- %TEMP%\yhxuheqo.tmp
- %TEMP%\yqepbeeb.tmp
- %HOMEPATH%\documents\hzlpopa.dll
- %APPDATA%\riycu\inatavo.tmp
- %APPDATA%\acxiil\vyowopi.piuvn
Deletes the following files
- C:\msdownld.tmp\as103a4c.tmp\tsk.dll
- %TEMP%\vuaxyr.tmp
- %TEMP%\ozazizid.tmp
- %TEMP%\puwiga.tmp
- %TEMP%\anaq.tmp
- %TEMP%\ziwu.tmp
- %TEMP%\yfka.tmp
- %TEMP%\zuyvyv.tmp
- %TEMP%\asfuneyw.tmp
- %TEMP%\yqgaha.tmp
- %TEMP%\ilri.tmp
- %TEMP%\suaf.tmp
- %TEMP%\piuhliu.tmp
- %TEMP%\qoveag.tmp
- %TEMP%\yrdaaq.tmp
- %TEMP%\xyidcyon.tmp
- %TEMP%\savaw.tmp
- %TEMP%\uwluoth.tmp
- %TEMP%\dafore.tmp
- %TEMP%\eqyb.tmp
- %TEMP%\yqepbeeb.tmp
- %TEMP%\yhxuheqo.tmp
- %TEMP%\royw.tmp
- %TEMP%\wuzi.tmp
- %TEMP%\wuzi.tmp-shm
- %TEMP%\vaop.tmp
- %TEMP%\ewtoud.tmp
- %TEMP%\nameet.tmp
- %APPDATA%\riycu\inatavo.tmp
Moves the following files
- from %APPDATA%\riycu\inatavo.ohbyo to %APPDATA%\riycu\inatavo.tmp
Substitutes the following files
- %APPDATA%\riycu\inatavo.ohbyo
- %APPDATA%\riycu\inatavo.tmp
Network activity
Connects to
- 'mi###anttra.at':443
TCP
- 'de###rena.at':443
UDP
- DNS ASK de###rena.at
- DNS ASK mi###anttra.at
Miscellaneous
Searches for the following windows
- ClassName: 'MS_AutodialMonitor' WindowName: ''
- ClassName: 'MS_WebcheckMonitor' WindowName: ''
Creates and executes the following
- '<SYSTEM32>\rundll32.exe' HZLPoPa.dll,DllRegisterServer' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c ipconfig /all' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c net config workstation' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c net view /all' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c net view /all /domain' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\msiexec.exe'
- '%WINDIR%\syswow64\cmd.exe' /c ipconfig /all
- '%WINDIR%\syswow64\ipconfig.exe' /all
- '%WINDIR%\syswow64\cmd.exe' /c net config workstation
- '%WINDIR%\syswow64\net.exe' config workstation
- '%WINDIR%\syswow64\net1.exe' config workstation
- '%WINDIR%\syswow64\cmd.exe' /c net view /all
- '%WINDIR%\syswow64\net.exe' view /all
- '%WINDIR%\syswow64\cmd.exe' /c net view /all /domain
- '%WINDIR%\syswow64\net.exe' view /all /domain
