Trojan horse proxy.ahiy and AVG

Wednesday, September 9th, 2009

A lot of people seem to be reporting today that AVG is finding files to be infected with trojan horse proxy.ahiy or trojan horse proxy ahiy. From what I’ve seen, although that may be a valid virus designation from AVG, they are also reporting many legitimate files as this trojan proxy ahiy. AVG is acknowledging [...]

Grisoft AVG Antivirus 7.5 on Windows XP False Positive that HURTS

Monday, November 10th, 2008

This looks like a REALLY bad false positive. It appears that AVG 7.5 for a short period of time detected user32.dll as a trojan horse. (trojan horse psw banker4). It looks as though update to the virus database VDB 270.9.0/1778 fixes the problem. Unfortunately if you have been bitten by this, you’ll need to boot [...]

Hiding malware may evade antivirus

Wednesday, August 23rd, 2006

Sans had an interesting malware analysis this morning about a blob that appeared to be ascii text (gibberish) that was retrieved by a piece of malware. It turns out that the ascii text was a cleverly encoded exe file (windows executable or program file.) It took several iterations of their analysis to uncover the actual [...]

AVG antivirus false positive

Friday, August 4th, 2006

Incidents.org has some reports of false positives reported by Grisoft’s AVG antivirus running on Windows XP (SP1)…. The false positive was with a file named C:\i386\REG.EXE which is a legit file from the Windows XP SP1 install. No other news or details on this as of yet.    Send article as PDF   

Big trouble – you don’t have any viruses….

Thursday, June 8th, 2006

You know, I’ve seen soooo many antivirus vendors that are somewhat ethically challanged claim that cookie files are a big threat, or in worse cases files that the “free” antivirus test downloaded are dangerous “you should be glad we got here in time – where’s our $30 to fix things…” kind of message, but from [...]

AVG – Cannot Launch AVG Internet Update

Tuesday, January 17th, 2006

Last week sometime I was doing maintenance on an OLD Windows 95 machine (yes there are some still out there….) and noticed the Antivirus had not updated in a good while. They were using Grisoft’s AVG and so I tried to force an update. I was greeted with an error message… “Cannot Launch AV internet [...]

Antivirus update response times

Wednesday, December 21st, 2005

We know that for Windows systems especially antivirus is a must. Up to date antivirus is the MOST important though. So how do the different vendors do in responsiveness and quick antivirus definition updates…? The SecurityFix has an article on just that today. The comparison is courtesy of av-test.org.    Send article as PDF   

Disinfecting a PC… part 8

Wednesday, December 21st, 2005

All right, now it’s time to give ad-aware a spin. I like being able to use several spyware scanners to get full coverage and cleaning. Ad-aware and spybot s&d are usually my first two choices. Realize that I’ve already taken a pass at this machine with AVG, BHODemon (for the browser helper objects) and Spybot [...]

Disinfecting a PC… part 4

Saturday, December 17th, 2005

So, AVG has been scanning away finding things we’ve really got a foothold on the system and the malware has a fight on it’s hands. It’s good to see progress. Up to this point we’ve had multiple Spool32 errors (printer related). These errors are what prompted the system to be brought in initially. There’s a [...]

Disinfecting a PC… part 3

Friday, December 16th, 2005

Picking up from last time… AVG was failing to install with a peculiar registry error. (Which I didn’t see much reference to online.) OK, so here is another fruit of the online search (so many bugs to identify…) jawa32.exe is listed as spyware.seekseek in sarc’s database. OK – let’s see if we can kill of [...]

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