my laptop specs:
hp pavilion dv6 running single boot windows 7 home premium genuine x64
a. i have these security products
1. free AV (qihoo 360 total security with built-in bitdefender and avira engines)
2. windows firewall enabled by default
the following is disabled all the time unless needed :-
6. bot-revolt free
honestly, before this incident, i did not have the idea that i can be possibly infected through skype. i was chatting in a public chatroom, when i saw a public message from a girl that invited people for a look at her photos. i chatted with her in skype like others. she organised a group chat where she uploaded her photos. like others, i downloaded those pictures for seeing. and then she sent (youtu.be) links to 2 recently uploaded youtube videos. i downloaded those videos and watched them, but they did not cause me any suspicion, coz at that time, little did i know that malware could be embedded inside JPG and MP4 files. only when i finished playing the 2nd MP4 file did i realise that there was a repeated 'dong' sound from my laptop speakers. so i immediately smelt something fishy and disconnected from the internet and exit-ed skype, but the sound lasted some 1 minute after that. after which my laptop is behaving strange. whenever i boot into windows, it freezes for about 2 minutes and then becomes normal. google-chrome cannot open links which open in the same tab [but able to open links in new tab]. in both chrome and cyberfox(x64) every page i open does not display immediately, instead it shows server not found message [i dont know how to upload the screenshot here]. i ran a full scan with each of my AV, MBAM, herdprotect, hitmanpro(free trial), but nothing picked up. and since i had an urgent collegework, i had to connect my 3 external hard drives (each of 1TB) at various points of time after the possible infection, leading to my doubt that they could be infected too [i had no other choice, it was urgent]. i created rescue USB disks with bitdefender iso and kaspersky iso downloaded from their official websites but the bitdefender one freezes at the "welcome to grub!" message and the kaspersky one displays some kind of error message and wont boot into. i doubt some kind of boot sector infection, but i am not sure. to be on the safer side i copied my entire internal HDD to a folder in one of my external HDDs using an ubuntu USB stick. now how am i to proceed? any expert help would be much appreciated. thanks in advance
ps. i checked the 2 MP4 files in virustotal, but no detections. i had deleted the 2 JPG files in haste and alarm.
EDIT: as per 'device manager' a new yellow icon is next to MICROSOFT ISATAP ADAPTER #2 saying that the device is not working properly because Windows cannot load the drivers required for this device. (Code 31). could this be the result of malware infection?
Edited by anniyan, 29 October 2016 - 07:30 AM.