WORM_OTORUN.HW
Worm:Win32/Autorun.ABS (Microsoft), W32/Autorun.worm.bdl (McAfee), Win32/Agent.NHY worm (Eset)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Worm
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This worm arrives via removable drives. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
Arrival Details
This worm arrives via removable drives.
It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This worm drops the following copies of itself into the affected system:
- %System%\wcynsvc.exe
- %System%\wcynsvc.ocx
(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)
Autostart Technique
This worm registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Wnetwisk
ImagePath = "%System%\wcynsvc.exe"
Other System Modifications
This worm adds the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Wnetwisk
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Enum\Root\LEGACY_WNETWISK
Propagation
This worm drops the following copy of itself in all physical and removable drives:
- No Delete{multiple spaces}.exe
- {folder name}{multiple spaces}.exe
Other Details
This worm connects to the following possibly malicious URL:
- {BLOCKED}ng55.3322.org:80
- {BLOCKED}ng33.gicp.net:80
It sets the attributes of the following file(s) to Hidden and System:
- {drive letter}:\{folder name}