Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Policies' = ''
- [<HKLM>\SOFTWARE\Microsoft\Active Setup\Installed Components\{YKA4L53L-67S3-736H-C4L8-8G21K83YLY0J}] 'StubPath' = '%WINDIR%\install\smss.exe Restart'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'wextract_cleanup0' = 'rundll32.exe <SYSTEM32>\advpack.dll,DelNodeRunDLL32 "%TEMP%\IXP000.TMP\"'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'Policies' = ''
Malicious functions:
Creates and executes the following:
- '%WINDIR%\install\smss.exe'
- '%TEMP%\IXP000.TMP\smss2.exe'
Modifies file system :
Creates the following files:
- %TEMP%\XxX.xXx
- %TEMP%\UuU.uUu
- %TEMP%\XX--XX--XX.txt
- %TEMP%\IXP000.TMP\smss2.exe
- %WINDIR%\install\smss.exe
Deletes the following files:
- %TEMP%\UuU.uUu
- %TEMP%\XxX.xXx
- %TEMP%\XX--XX--XX.txt
- %TEMP%\IXP000.TMP\smss2.exe
Network activity:
Connects to:
- 'localhost':81
- 'ch#####2x3.myftp.biz':81
- 'ly#####000.no-ip.biz':81
UDP:
- DNS ASK ch#####2x3.myftp.biz
- DNS ASK ly#####000.no-ip.biz
