Trojan horse hiloti.cg / rootkit hidden driver

Rescan shortly after posting shows a Trojan Horse Hiloti.CG
c\windows\system32\svchost.exe (5808)

Over view file from avg 
"Whole Computer Scan"
"High severity";"1";"1";"0"
"Scanned:";"Scan Whole Computer"
"Started:";"14/09/2015, 18:11:37"
"Finished:";"14/09/2015, 18:24:40"
"Number of items:";"229872"
"Launched by:";"craig"

"Name";"Description";"Status";"Status";"Priority"
"c:\Windows\System32\svchost.exe (5808)";"Trojan horse Hiloti.CG";"Secured";"Healed";"High"

Thanks for the speedy reply

Hi Im not really clued up on this kind of thing so id really appreciate any help with making sure iv cleared it.

My computer was feeling sluggish so i decided to reformat.
When i reformatted, i started reinstalling my programs and i noticed AVG ( free version ) picked up a trojan horse hiloti.cg located system32/svchost.exe now avg classed this as a high threat ranked #702 so i felt i had to do somthing about it.
I ran a few scans noticed it was healed by avg then reformatted again , thinking this was the safest thing to do.

Second reformat and a scan picked up a rootkit hidden driver located system32/dump_dumpata.sys not sure if this is the remnant of what i just removed.  Online this also is suggestes as somthing i dont want on my pc so here i am.
id appreciate if anyone had any advice on getting rid of this or if it was even just a false positive from a more recent avg update? or have i managed to clear the worst of it?

Currently tried
E set online scanner -   No detections
AVG anti rootkit -    No detections
Malware bytes antiroot - No detections 
Windows defender  - No detections

Current installed programs

Windows 7 home premium
google chrome
Avg antivirus free version - 2015.0.6086
geforce experience and related nvidea graphics driver

After yesterday i decided to turn my pc off, pull out the internet cable and wait til i got home to post this question up, rescan today is showing nothing ...i find it strange that i couldnt seem to get rid off it yesterday after all those "heals" , restarts and reformats

as i mentioned before id be grateful if anyone had any other suggestions

Craig


 

Hi Craig,
I do understand your concern. Not to worry, please update your product and scan the system regularly. If AVG detect you malicious thing, I kindly request you to remove it.I suggest you to purchase full version to protect your system even more better that free version.
Thank you.

Thanks for the speedy reply

Rescan shortly after posting shows a Trojan Horse Hiloti.CG
c\windows\system32\svchost.exe (5808)

Over view file from avg 
"Whole Computer Scan"
"High severity";"1";"1";"0"
"Scanned:";"Scan Whole Computer"
"Started:";"14/09/2015, 18:11:37"
"Finished:";"14/09/2015, 18:24:40"
"Number of items:";"229872"
"Launched by:";"craig"

"Name";"Description";"Status";"Status";"Priority"
"c:\Windows\System32\svchost.exe (5808)";"Trojan horse Hiloti.CG";"Secured";"Healed";"High"

Hello Craig.
Thank you for returning and posting. Feel free to contact us if you have any issues further. Thanks you.