Troj/PPdoor-O is a backdoor Trojan for the Windows platform.
When Troj/PPdoor-O is installed the following files are created:
<System>\hgakheg.dll
<System>\ydyzjmaa.dll
Both DLL files are non-executable and can be deleted.
The following registry entries are created to run the Trojan and any exported library code on startup:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Terminal Update
<System>\biosefui.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\
ShellServiceObjectDelayLoad
Terminal Agent
<random classid>
Troj/PPdoor-O will listen for backdoor commands and may also act as a SOCKS, mail and P2P proxy.