Threat Description

Carewmr

Details

Aliases:Carewmr, VBS/Carewmr, VBS.AVFake
Category:Malware
Type:Trojan
Platform:VBS

Summary



VBS/Carewmr is a trojan written with Visual Basic Script. Upon execution the trojan displays three messages.



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



This a simple trojan that, when executed, will show following three messages:

	Welcome to CLRAV of Kaspersky Labs, press OK or Accept to Start
	scanning your computer.

	ERROR!, Code error:3212552, please execute this tool in MS-DOS.

	Thank You for prefer Kaspersky Labs Products

At September 1st, it shows an additional message in Spanish:

	Mr.Carew vuelve otra vez!!, jaja

which means in English

	Mr.Carew comes back again!!, jaja

After these messsages, the trojan will open the web page http://www.avp.ru using the default browser.

Next, the trojan attemps to remove a number of registry keys, attempting to disable several security software:

	HKLM\Software\Microsoft\Windows\CurrentVersion\Run\SystemTray
	HKLM\Software\Microsoft\Windows\CurrentVersion\Run\AVPCC
	HKLM\Software\Microsoft\Windows\CurrentVersion\Run\NAVW32
	HKLM\Software\Microsoft\Windows\CurrentVersion\Run\TrueVector
	HKLM\Software\Microsoft\Windows\CurrentVersion\Run\ZoneAlarm Pro

The trojan also creates a number of directories and empty files to the root of the C: drive using for example names of different anti-virus products. It also attempts to delete all files from the C:\Windows directory.

Finally the trojan creates a text file to the current directory "CLRAV_Report.log" with the following content:

	Due an error, Code error:3212552, CLRAV has not disinfect your
	computer For Support please send a e-mail to support@kaspersky.com
	and please indicate the Code Error.

The trojan has the following comment in the beginning:

'VBS.CarewMR.a By Jadraquer Killer (Mr.Carew)



Detection


F-Secure Anti-Virus detects this trojan with the current updates.



Technical Details: Katrin Tocheva and Sami Rautiainen; translation: Ero Carrera; F-Secure Corp.; October 22th, 2002


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