PE_HLLW.DENIS.A
Windows 2000, Windows XP, Windows Server 2003
Threat Type: File infector
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This file infector may be unknowingly downloaded by a user while visiting malicious websites.
TECHNICAL DETAILS
70656 bytes
EXE
No
08 Aug 2001
Arrival Details
This file infector may be unknowingly downloaded by a user while visiting malicious websites.
Installation
This file infector drops the following copies of itself into the affected system:
- %SYSTEM%\winapp.exe
Autostart Technique
This file infector adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Run
Netvx = %SYSTEM%\winapp.exe
Other System Modifications
This file infector adds the following registry keys:
HKEY_LOCAL_MACHINE\Software\Tress
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\App Paths\
no.exe
It adds the following registry entries as part of its installation routine:
HKEY_LOCAL_MACHINE\Software\Tress
Installed = {date}
HKEY_LOCAL_MACHINE\Software\Tress
User = {username}
HKEY_LOCAL_MACHINE\Software\Tress
RunCount = {count}
HKEY_LOCAL_MACHINE\Software\Tress
MineCount = {count}
HKEY_LOCAL_MACHINE\Software\Tress
Ver = dword:0000000c
HKEY_LOCAL_MACHINE\Software\Tress
InstalledAs = winapp.exe
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\App Paths\
no.exe
Default = %SYSTEM%\winapp.exe
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Policies\
Network
DisablePwdCaching = 1
SOLUTION
8.900
NOTES:
Trend customers:
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