[clamav-users] Submission Status

[Al Varnell]

On Sun, Feb 07, 2016 at 01:59 PM, Jesse Nicholson wrote:
> 
> Not sure if I'm allowed to upload stuff here

I’m certainly glad that it is not allowed as I’m sure nobody here would appreciate receiving a malware sample.  Hopefully anybody that would find your information useful in their situation will contact you for the details where you can send it to them off-list.

> , but to follow up on this,
> I've attached a zip containing the original decoded infection php code, the
> infection in its natural state (doubly base64 encoded), definitions that
> match it, and other nfo like a simple script that can clean the infection
> without damaging php files its been injected into (with sed + regex).

Not sure who your intended audience for this information is.  Cleaning an infected files is way beyond any capabilities that ClamAV currently posses, so that’s going to be up to you to accomplish once an infected file has been identified.  I’ve not heard of any plans to implement such a capability, but perhaps the team can fill us in on that.

-Al-

> On Sat, Feb 6, 2016 at 7:19 PM, Jesse Nicholson wrote:
>> @ant indeed, this is what I'm doing. Original server is gone, new server
>> was built from the ground up but the xferred required user files (web root)
>> is quarantined while I go through it and lean up. There's a really nasty
>> php injection that appears to intercept, proxy requests to various IPs that
>> come from control server(s), attempts to download new viruses and such to
>> your configured temp upload directory and then inject them into responses
>> and such. I've made a definition that works very well, and have uncovered
>> nearly 300 infected files using that sig. Other root shells were also
>> present, but existing definitions cleaned them up.
>> 
>> Was curious because I'd like to submit the definition in case it helps, so
>> far I've only submitted one sample of the infection as found in the wild
>> and a second file (both zipped) of the decoded main function group.
>> 
>> @Al Yep I subscribed to the db list. MD5 is 92 3b 61 7b a7 9a da 3b 04 e7
>> ba d7 a4 d7 04 74
>> 
>> The infection has many things in common with the one posted here:
>> http://stackoverflow.com/q/22647441
>> 
>> On Sat, Feb 6, 2016 at 7:05 PM, Crap wrote:
>>>> I'm cleaning a server
>>>> that got badly infected,
>>> 
>>> I know this doesn't answer the OP, but destroy the server and treat all
>>> data as compromised.
>>> Rebuild for a fresh trusted base and attempt to clean the data away from
>>> the original server..
>>> 
>>> -- ant
>>> 
>>>> On 6 Feb 2016, at 23:41, Jesse Nicholson wrote:
>>>> Where/how can I check on the status of a submission? I'm cleaning a
>>> server
>>>> that got badly infected, and while doing so discovered what I believe
>>> to be
>>>> a PHP exploit that maldet and clamav don't have definitions for.
>>> Virustotal
>>>> also has 0 hits on it. However, I'm sure it's malicious because the main
>>>> function block is double base 64 encoded, everything else that interacts
>>>> with it is salted and random. Decoding the main function block, there
>>>> appears to functions to compress local files and xfer them to unknown
>>>> locations.
>>>> 
>>>> Anyway I've successfully created a definition for it, have nearly 300
>>> hits
>>>> and am curious about following up after I've submitted one sample via
>>> the
>>>> website. Never done anything like this before, so looking for
>>>> guidance/advice.
>>>> 
>>>> --
>>>> Jesse Nicholson