Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'dwsuyxvusqgpakmky' = '<SYSTEM32>\regsvr32.exe /s "<SYSTEM32>\xtpwylyiwfkw.dll"'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'dwsuyxvusqgpakmky' = '<SYSTEM32>\regsvr32.exe /s ""%TEMP%\nsy4.tmp.dll""'
Malicious functions:
Executes the following:
- <SYSTEM32>\regsvr32.exe /s "<SYSTEM32>\xtpwylyiwfkw.dll"
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\nsi_install[1].php
- %TEMP%\ap1C426.tmp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\101ktm[1].htm
- <SYSTEM32>\nmzkfjoclhgsvak.exe
- %TEMP%\nsz2.tmp
- %TEMP%\nsf3.tmp\System.dll
- %TEMP%\nsy4.tmp.dll
Deletes the following files:
- %TEMP%\nsf3.tmp\System.dll
- %TEMP%\ap1C426.tmp
Network activity:
Connects to:
- 'localhost':1038
- 'th###gen.org':80
- 'localhost':1035
- 'h1.###revenue.biz':80
TCP:
HTTP GET requests:
- h1.###revenue.biz/bc/nsi_install.php?in###############################################################################
HTTP POST requests:
- th###gen.org/imprss/101ktm.php
UDP:
- DNS ASK th###gen.org
- DNS ASK h1.###revenue.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'MS_AutodialMonitor' WindowName: ''
- ClassName: 'MS_WebcheckMonitor' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: '' WindowName: ''
