Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\rstrui.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MpCmdRun.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MSASCui.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ComboFix.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\wireshark.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avp.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\keyscrambler.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\bdagent.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\zlclient.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\egui.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgwdsvc.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgrsx.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgidsagent.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgcsrvx.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgui.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\msseces.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avgnt.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avcenter.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ccuac.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\spybotsd.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\hijackthis.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mbamservice.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mbamscheduler.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mbampt.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mbamgui.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\mbam.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\instup.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avscan.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AvastUI.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avconfig.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\AvastSvc.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\avguard.exe] 'Debugger' = 'rundll32.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\MsMpEng.exe] 'Debugger' = 'rundll32.exe'
Malicious functions:
Injects code into
the following system processes:
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe
Modifies file system:
Creates the following files:
- %APPDATA%\ZHNTQHT\ZHNTQHT.exe
- %APPDATA%\ZHNTQHT\aSSSSS.xml
- %TEMP%\5c5a8d8a-d6fa-a2b5-7e59-59755ea72586
- %TEMP%\tmp1.tmp
Deletes the following files:
- %APPDATA%\ZHNTQHT\aSSSSS.xml
Network activity:
Connects to:
- 'wp#d':80
- 'bo#.####ismyipaddress.com':80
- 'sm##.zoho.com':587
TCP:
HTTP GET requests:
- http://11#.#11.111.1/wpad.dat via wp#d
- http://bo#.####ismyipaddress.com/
UDP:
- DNS ASK wp#d
- DNS ASK bo#.####ismyipaddress.com
- DNS ASK sm##.zoho.com
Miscellaneous:
Creates and executes the following:
- '<Full path to file>'
Executes the following:
- '<SYSTEM32>\schtasks.exe' /Create /TN "ZHNTQHT\ZHNTQHT" /XML "%APPDATA%\ZHNTQHT\aSSSSS.xml"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe' /stext "%TEMP%\tmp1.tmp"
