General discussion

Downloader-HZ

Date Discovered: 3/5/2004
Date Added: 3/23/2004
Origin: Unknown
Length: 7680
Type: Trojan
SubType: Downloader

Virus Characteristics

When executed on the victim machine, this downloader trojan attempts to download files.
The trojan is UPX packed.

When run, the trojan attempts to disable security software. It targets processes that use the following names:
- update.exe
- explorer.exe
- winlogon.exe
- system.exe
- taskman.exe
- taskmon.exe
- svchost.exe
- services.exe
- wupdmgr.exe
- winspool.exe
- webcheck.exe
- wininet.exe

It copies itself to the WINDOWS + "SYSTEM" directory and creates a registry run key to load itself at system startup:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
"System Update" = c:\Windows\System\%Trojan File Name%


More: http://us.mcafee.com/virusInfo/default.asp?id=description&virus_k=101129

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