Mitglieder is a trojan that functions as an email relay. The trojan kills tasks of several programs and reports certain info to its creators. Bagle worm has the functionality to download and activate this trojan from a website.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
When run, the trojan installs itself to system. It copies its file as SYSTEM.EXE to Windows System directory and creates the following entry in the System Registry:
[HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] "ssgrate.exe" = "%winsysdir%\system.exe"
where %winsysdir% is the name of Windows System directory.
The trojan also creates another entry in the Registry where it stores its internal variables.
Then the trojan starts a thread that accesses 15 different websites and opens a PHP page there with certain parameters. This way the trojan reports its ID, proxy port and IP of infected computers to its authors.
After that trojan starts a thread that terminates processes with the following names:
ATUPDATER.EXE AVWUPD32.EXE AVPUPD.EXE LUALL.EXE DRWEBUPW.EXE ICSSUPPNT.EXE ICSUPP95.EXE UPDATE.EXE NUPGRADE.EXE ATUPDATER.EXE AUPDATE.EXE AUTODOWN.EXE AUTOTRACE.EXE AUTOUPDATE.EXE AVXQUAR.EXE CFIAUDIT.EXE MCUPDATE.EXE NUPGRADE.EXE
The trojan has 3 links in its body that point to a data stealing trojan that is located on 3 different websites. This trojan is detected as 'Trojan.PSW.Ldpinch.as'. The infected files have been recently removed from those website already.
The trojan has a mail relay that functions on the certain port (in the sample we got the port number is 39999).
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