Alias/esIM-Worm.Win32.Kelvir.ew [KAV], W32/Kelvir.DO!wm, W32/Kelvir.EW-net, W32/Kelvir.KM [FP], WORM_KELVIR.DO [Trend] | ||||||||||||
Detection Availability
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Visible Symptoms
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Detailed AnalysisThis virus spreads to other contacts of Microsoft Messenger on an infected system. The virus enumerates all contacts and sends itself as a file to found contacts, sometimes with a message like any of these -
Upon running this virus, an error message may be displayed and the mouse and keyboard are then blocked from use - the user is required to press the reset key, or force a reboot using the power on/off switch - Meanwhile in the background, the virus will try to download binaries from two web hosted sites. The downloaded files (which are really viruses) are renamed to .EXE extension and run. The virus makes contact with these web servers to download the malware -
The file are retrieved as .JPG image files however they are really 32bit executables renamed to .JPG extension. The virus may then send a copy of itself to contacts listed in MS Messenger, starting the circle of infection over again.
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Recommended Action
FortiGate systems: |