Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'idsyigigmprpulzdt' = '<SYSTEM32>\regsvr32.exe /s "<SYSTEM32>\arktzdokgzlkey.dll"'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'idsyigigmprpulzdt' = '<SYSTEM32>\regsvr32.exe /s "%TEMP%\arktzdokgzlkey.dll"'
Malicious functions:
Executes the following:
- <SYSTEM32>\regsvr32.exe /s "<SYSTEM32>\arktzdokgzlkey.dll"
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\nsi_install[1].php
- %TEMP%\ax15AD8.tmp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\4youads[1].htm
- %TEMP%\nse2.tmp
- %TEMP%\arktzdokgzlkey.dll
- <SYSTEM32>\tdiklwjhsifloi.exe
Deletes the following files:
- %TEMP%\ax15AD8.tmp
Network activity:
Connects to:
- 'localhost':1040
- 'ad#.##nners4u.biz':80
- 'localhost':1037
TCP:
HTTP GET requests:
- ad#.##nners4u.biz/bc/nsi_install.php?in##############################################################################
UDP:
- DNS ASK ad#.##nners4u.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_AutodialMonitor' WindowName: ''
- ClassName: 'MS_WebcheckMonitor' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: '' WindowName: ''
