Threat Description

Glieder.H

Details

Aliases: Glieder.H, Trojan.Win32.Glieder.h, W32/Glieder.H, TrojanDropper.Win32.Small.kv, TrojanDownloader.Win32.Agent.cj
Category: Malware
Type:
Platform: W32

Summary


We have received samples of Glieder.H variant late on August 31st 2004. Originally it was detected by us as 'Bagle.AK', but then the name was changed to 'Glieder.H'. The origin was an e-mail message that was spammed to numerous people. The e-mail contains an archive named FOTO.ZIP. Inside there's an HTML file and an EXE file named FOTO1.EXE.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.



Technical Details


This FOTO1.EXE file that was spammed in e-mails is a dropper. It drops and activates a DLL component that kills processes belonging to updating components of several anti-virus programs:

ATUPDATER.EXE  AUPDATE.EXE  AUTOTRACE.EXE  AUTOUPDATE.EXE  FIREWALL.EXE  ATUPDATER.EXE  LUALL.EXE  DRWEBUPW.EXE  AUTODOWN.EXE  NUPGRADE.EXE  OUTPOST.EXE  ICSSUPPNT.EXE  ICSUPP95.EXE  ESCANH95.EXE  AVXQUAR.EXE  ESCANHNT.EXE  UPGRADER.EXE  AVXQUAR.EXE  AVWUPD32.EXE  AVPUPD.EXE  CFIAUDIT.EXE  UPDATE.EXE  NUPGRADE.EXE  MCUPDATE.EXE  

Then it attempts to download to download a file from several websites. The list of URLs is hardcoded in the program's body.



Detection


F-Secure Anti-Virus detects Glieder.H starting from the following update:

Detection Type: PC
Database: 2004-08-31_05



Description Details: Alexey Podrezov; August 31st, 2004
Description Last Modified: Tzvetan Chaliavski; September 1st, 2004


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