WORM_NITOL.EC

This worm arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Arrival Details

This worm 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 component file(s):

• %System%\{random}.exe

(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)

It drops the following copies of itself into the affected system:

• %System%\hra33.dll

(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)

Other System Modifications

This worm adds the following registry keys:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Distribuaav

It adds the following registry entries as part of its installation routine:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\Distribuaav
ImagePath = "%System%\{random}.exe"

Other Details

This worm connects to the following possibly malicious URL:

• {BLOCKED}5.{BLOCKED}7.199.30:688

NOTES:

It drops the following copy of itself in all folders in all physical and removable drives containing an EXE file:

• lpk.dll