Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'RavMon.exe' = '<SYSTEM32>\RavMon.exe'
Malicious functions:
Creates and executes the following:
- C:\Documents and Settings\4.exe
- C:\Documents and Settings\3.exe
- C:\Documents and Settings\2.exe
- C:\Documents and Settings\1.exe
- C:\Documents and Settings\4.exe (downloaded from the Internet)
- C:\Documents and Settings\3.exe (downloaded from the Internet)
- C:\Documents and Settings\1.exe (downloaded from the Internet)
- C:\Documents and Settings\2.exe (downloaded from the Internet)
Executes the following:
- <SYSTEM32>\cmd.exe /c <SYSTEM32>\Deleteme.bat
Injects code into
the following system processes:
- %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\3[1].exe
- C:\Documents and Settings\2.exe
- C:\Documents and Settings\3.exe
- C:\Documents and Settings\4.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\4[1].exe
- <SYSTEM32>\Deleteme.bat
- <SYSTEM32>\RavMon.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\1[1].exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\2[1].exe
- C:\Documents and Settings\1.exe
Deletes itself.
Network activity:
Connects to:
- 'www.ai##123.cn':80
- 'localhost':1035
TCP:
HTTP GET requests:
- www.ai##123.cn/3.exe
- www.ai##123.cn/4.exe
- www.ai##123.cn/1.exe
- www.ai##123.cn/2.exe
UDP:
- DNS ASK www.ai##123.cn
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
- ClassName: 'Shell_TrayWnd' WindowName: ''
