Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'explorer' = '%TEMP%\chrome.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\chrome.exe
- <Drive name for removable media>:\Autorun.inf
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\cmd[1].txt
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\cmd[1].txt
- %TEMP%\chrome.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Autorun.inf
- <Drive name for removable media>:\chrome.exe
- <Full path to virus>
- %TEMP%\chrome.exe
Deletes the following files:
- <SYSTEM32>\PerfStringBackup.TMP
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\cmd[1].txt
- <SYSTEM32>\wbem\Performance\WmiApRpl.ini
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\cmd[1].txt
Network activity:
Connects to:
- 'ay####a.no-ip.org':80
TCP:
HTTP GET requests:
- ay####a.no-ip.org/cmd.txt
UDP:
- DNS ASK ay####a.no-ip.org
