Troj/Sysbug-A is a backdoor Trojan that steals system information and opens up a backdoor to allow unauthorised access to the compromised computer. This Trojan horse has been distributed in the form of an email with the following characteristics:
From: james2003@hotmail.com
Subject line: Re[2]: Mary
Message text:
Hello my dear Mary,
I have been thinking about you all night. I would like to apologize for the other night when we made beautiful love and did not use condoms. I know this was a mistake and I beg you to forgive me.
I miss you more than anything, please call me Mary, I need you. Do you remember when we were having wild sex in my house? I remember it all like it was only yesterday. You said that the pictures would not come out good, but you were very wrong, they are great. I didn't want to show you the pictures at first, but now I think it's time for you to see them. Please look in the attachment and you will see what I mean.
I love you with all my heart, James.
Attached file: Private.zip (contains wendynaked.jpg.exe)
Troj/Sysbug-A will copy itself to the Windows folder as sysdeb32.exe and adds the following registry entry to ensure it gets run at system logon:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run\SystemDebug
Troj/Sysbug-A creates the files svc.sav in the Windows folder and C:\temp35.txt. These files are not malicious and can simply be deleted.