Antivirus finding the sasser.B virus in steamclient installed in update

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ovrkll19 May 6, 2013 @ 6:49pm

My antivirus has quaratined the steamclient.dll file after my latest steam update. It says that it has found the Sasser.B virus in the dll. Has anyone else had this problem?

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Showing 1-12 of 12 comments

eram May 6, 2013 @ 6:53pm

What antivirus are you using?

ESET NOD32

NOD32 incorrectly identifies some third party game files as malicious and will quarantine the files during the download process. This often results in the message "This game is currently unavailable" when trying to launch the game.
Add your game folder to NOD32 exclusions. The default folder location for third party games is C:\Program Files\Steam\SteamApps\common. Follow the link for further instructions: How do I exclude certain files or folders from real-time scanning?
Once your folder has been added, you need to verify your GCF cache files in order for the files to re-download. Please see the Verifying GCF Cache Files article for instructions.

Norton Firewall

When using the "Friends" feature, some Norton Firewall users have reported that their firewall software reports that Steam may be malicious software attempting to access their system. This is a false positive.
Occasionally the Friends server sends your computer a message asking if you're still online - if you closed Steam (especially if you killed it from the task manager), this message can be intercepted by the Norton firewall.
Since Friends sometimes uses the same port number as a known trojan horse virus, the firewall incorrectly identifies the message as being malicious - despite the fact that the traffic does not mimic a trojan in any other respect.

Kaspersky AV or Internet Security

Kaspersky AV may prevent the in-game overlay from functioning in some or all games. This may occur silently, or Kaspersky may warn you that Steam is acting as an Invader application trying to load itself in another process.
Workaround:
In your Kaspersky settings go the Threads and exclusions, Trusted Zone, and add Steam.exe as a trusted application. Make sure you check the settings to Do not restrict application activity as well as Do not scan opened files for full compatibility.
Kaspersky 7.0 users must enable the Compatibility Mode for Programs Using Self-Protection Methods option, also disable the option for Application Integrity Control.

https://support.steampowered.com/kb_article.php?ref=4361-MVDP-3638

kjx May 6, 2013 @ 10:23pm

Same here, virus detected. I'm using Panda Cloud AV Pro. False alert?

SuperDog May 7, 2013 @ 12:10am

turn your antivirus of update steam and then turn the antivirus back on

ovrkll19 May 7, 2013 @ 4:16pm

I did that, install went fine, but as soon as I turned Antivirus back on, the Steamclient.dll is quarantined again.

Brevet May 8, 2013 @ 7:53am

I have the same problem as ovrkill19, exact same problem. When I start Steam with Panda Global Protection it says that I can't open Steam, need to reinstall. When I turn off Panda I can go through the update but when I turn Panda on again it says as for ovrkill19, Steamclient.dll is quarantined.

Grod May 8, 2013 @ 8:18am

Same here using Panda antivirus pro 2013.

Brevet May 8, 2013 @ 8:19am

We must report to Panda that something is worng in their systems I guess.

ShootBlood May 8, 2013 @ 9:34pm

Same problem here with Panda Internet Security 2013. I've sent the so called 'virus' to the Panda Labs for further checking. Hope they'll fix it very soon, since this problem started around yesterday 'noon and I've never experienced any trouble before between Steam and Panda (or any other program)!

heag May 9, 2013 @ 2:27am

Temporay solution that works for me, using panda, is to set your AV to not scan the Steam Folder.

Velcraheim May 9, 2013 @ 2:54am

Same here... I can't play steam games without deactivating my Panda antivirus pro... This started two days ago.
I hope that Panda solves this soon. I've sent this thing to Panda Labs...

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