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QuestionWhat / how are these people trying to hack my site? Pin
Wombaticus7-May-16 4:34
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AnswerRe: What / how are these people trying to hack my site? Pin
DaveAuld7-May-16 5:27
professionalDaveAuld7-May-16 5:27 
That looks like T-SQL injection attempt.

Looking at the content, they are trying to inject spam comments or something like that and are probably randomly trying sites hoping to find a vulnerable system, whether it be a joomla or wordpress or a.n.other.

I used to get this **** all the time when my website was up (joomla V1.25 or whatever it was), and used to manually have to delete hundreds and thousands of comments waiting in moderation.

The fact the ISP screwed an update and killed my virtual server probably did me a favour!

Edit:
First they set up a some variables (Declare), one of them is a cursor (database positioning), next they do a search for and iterate all the databases defined in the system and then begin a process of simply adding content to the various columns.
If you break the statement down into a readible structure, and then compares the keywords against the T-SQL specification, you will be able to work out what is going on.
e.g. variables named with a single @ are user variables, and ones referenced by double @@ are reserved by the database language for system variables, e.g. @@rowcount is used to inform how many rows are updated/changed etc. following a command.
Dave
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QuestionActionLink for webgrid page navigation? Pin
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QuestionProblem Querying using PDO Pin
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Questionmenu and submenu show in sidebar after click on it and load its related pages Pin
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