Recently McAfee released an update that crippled many Windows XP machines running SP3. The update caused svchost.exe to be flagged as a virus. I am just in shock that such a large company didn’t do thorough enough testing to stop this from happening.
I’m glad I stayed away from McAfee’s products.
http://www.betanews.com/article/One-very-false-positive-McAfee-in-full-damage-control-mode/1272040662
Malware, Security, Windows
We are in the process of migrating to a new domain. We are first migrating our field staff. Each field staff needs their own “home” folder to store documents. To keep this secure; we need to have read permission for everyone on the root folder and then only allow the user to view their individual issue. I had to accomplish the following:
- Create the folders by username
- Remove inheritance from the parent folder
- Remove “Domain Users” permission from each folder
- Add the user with change permissions on the folder
I had to do this for about 190 users; doing it manually would have been a pain.
To create the folders, I had a list of all the usernames by login. I put the names into a text file and used the following commands in a batch file to create the folders:
@echo off
for /f %%i in (file.txt) do mkdir %%i
Once the folders were created, the next step was to work with the permissions. I found a utility called SetACL. I replaced the “mkdir %%i” in the batch file with the following commands to complete the rest of the tasks:
- setacl -on %%i -ot file -actn setprot -op “dacl:p_c” (Remove inheritance)
- SetACL -on %%i -ot file -actn trustee -trst “n1:domain users;s1:n;ta:remtrst;w:dacl” (Remove Domain Users)
- setacl -on %%i -ot file -actn ace -ace n:%%i;p:change (Add the user with change permissions to their folder
Windows
I am increasingly seeing cases of infection from Rogue AV software. My company is currently working on phasing out our old Symantec 10 and replacing it with Kaspersky, but in the mean time we keep getting these infections.
Luckily the infections have not been very destructive. They are only in one user profile and are usually just an EXE in either Application Data or Local Settings/Application data.
Kaspersky’s viruslist.com has a good article talking about why these are so prevalent and how they are getting past some AV products. The article can be found here.
Malware, Security, Windows
I was correct in that the malware was previously unknown. Here is the response from Kaspersky’s Lab:
From: <newvirus@kaspersky.com>
To: <xxx@xxx.com>
Date: 01/13/2010 02:32 PM
Subject: RE: Malware sample [KLAN-57074893]
Hello,
pkdpsysguard.exe – not-a-virus:FraudTool.Win32.WinSpywareProtect.caf
New potentially risk software was found in this file. It’s detection will be included in the next update. Thank you for your help.
——————————————-
Best wishes, Pavel Firsov.
Virus analyst , Kaspersky Lab.
_____________________________
newvirus@kaspersky.com
http://www.kaspersky.com http://www.viruslist.com
Score a win!
-G13
Malware, Security, Windows
We recently came across a piece of Fraudware on one of our client PCs. This one is your typical faux anti-virus application which makes repeated attempts to get you to purchase itself.
The good news is that this was not a case of Vundo; it appears that the malware was only specific to one user profile.
Only one EXE was found; once it was deleted the issue went away. We quarantined a sample and I submitted a copy to Anubis as well as Offensive Computing. Neither of these sites could identify what kind of malware it was.
The report from Anubis can be found here. The sample can also be found on Offensive Computing by searching for the md5sum: 6b833d23ddfae069883a3b562e0435ba
The malware seems to have created its own proxy server and modified the settings in Internet Explorer. This prevented us from visiting any sites besides their created one.
I submitted a sample to Kaspersky’s Virus Labs for further analysis.
-G13
Malware, Security, Windows
I have been tasked with choosing a new anti-virus program for my company. After reviewing documents on http://www.av-comparatives.org/ and demoing the software; we decided to go with Kaspersky Open Space Security.
We chose the Business Space Security suite since we were only interested in just anti-virus protection on our workstations and servers. The price could not be beat; we were quoted at about 1/2 the cost of Symantec Endpoint Security.
The one thing we really like about Kaspersky is that after it scans our domain for workstations, it shows us which machines are not protected by Kaspersky. The desktop engine is also very light weight and the administrative interface is not overly complex.
So far it has been a great product!
-G13
Security, Windows