Our admin password was not very strong and somebody from turkey hacked our admin account at 14:48 GMT on 10 December 2016. The attacker logged in from IP 22.214.171.124. Searching for this on google gives http://whoisip.ovh/126.96.36.199 which is located in Turkey. Even the image was showing the sign of turkey.
When I searched on internet I found following two links:
I was out of city so only able to analyze the attack today morning and restore the website again. Our admin password has been changed and we will try to avoid such issues in future.
Really sorry for the inconvenience to our readers!