Threat Description

Nightflyght

Details

Aliases:Nightflyght, VBS/Nightflyght.A@mm, VBS_Nflight.A, Bloodhound.VBS.Worm
Category:Malware
Type:Worm
Platform:VBS

Summary



Nightflyght is a polymorphic Visual Basic Script worm.



Removal


Automatic action

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

More

You may wish to refer to the Support Community for further assistance. You may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



Technical Details




Variant:Nightflyght.A

Nightflyght.A worm spreads using Outlook and mIRC. The infected Outlook messages looks as follows:

	Subject: Hi :-)
	Body: <sctipt code>

The worm send itself as an embedded HTML, not as a separate attachment. Nightflyght lower Internet Explorer security zones and WSH security settings:

	HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\
	HKCU\Software\Microsoft\Windows Script Host\Settings\TrustPolicy

The worm contains several payloads. If the day is 5th and any month, it removes the desktop:

	HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\NoDesktop

changes the registered owner to 'NightFlight':

	HKLM\Software\Microsoft\Windows\CurrentVersion\RegisteredOwner

and the registered organization to 'Carpe Noctem':

	HKLM\Software\Microsoft\Windows\CurrentVersion\RegisteredOrganization

The worm also changes the wallpaper to a random bit map file found on the infected system:

	HKCU\Control Panel\desktop\Wallpaper

Nightflight.A spreads via mIRC by modifying the Script.ini file. To do this it uses file warning.htm that it drops in Windows folder.

The worm affects Windows SE by executing Microsoft Agent and showing the following message:

	"The Nightflight is still out there!"




Technical Details: Katrin Tocheva, F-Secure; May 31, 2001


SUBMIT A SAMPLE

Suspect a file or URL was wrongly detected? Submit a sample to our Labs for analysis

Submit Now

Give And Get Advice

Give advice. Get advice. Share the knowledge on our free discussion forum.

Learn More