Summary
Funny worm spreads in a similar way as LoveLetter. All three known variants of this worm drop, run and delete a binary file Startx.exe that is a password stealing trojan detected by F-Secure Anti-Virus as 'Trojan.PSW.Hooker.24.e'. This trojan is run if the virus found a UBS banking software installed on the victim's machine. Otherwise it replicates as a worm.
Removal
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First, check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
Variant:Funny.A
This variant sends email to all recipients in Outlook address book with:
Subject: Funny story Attachment: FUNNY_STORY.HTM.vbs
In addition, it tries to connect to a web location.
Variant:Funny.B
This variant is similar with Funny.A, but it sends messages with the following:
Subject: When did you die? Attachment: LIFE_ASSURANCE.HTM.vbs
Variant:Funny.C
Funny.C spreads in messages with:
Subject: Rechnungsabschrift Attachment: RECHNUNGSABSCHRIFT.DOC.vbs
This variant does not try to connect to the web. It creates a text file RECHNUNGSABSCHRIFT.DOC and open it with Write.exe. The text file contains the following information:
INVOICE Date: September 18, 2000 From: Katrin Heinze 19, chemin des Aulx CH-1228 Plan-les-Ouates, Geneva Switzerland To: Myron Schmidt" Ch. des Boveresses 151 CH-1066 Epalingess/Lausanne Switzerland Item Description Item Description Cost 1August Voice Mail ChargesCHF 35.00 1Internet - Reserve Domain Name (2 years) CHF 250.00 1Internet - Set Up Fee CHF 110.00 1Internet - Creation Fee CHF 250.00 1Internet - Submit to 540 Search Engines CHF 50.00 1Internet 6 Months of Hosting CHF 200.00 Total CHF 895.00
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