Malwarebytes thinks Steam is a Trojan (SOLVED)
Steam started an update of Cyberpunk 2077 today.

The very moment the download started Malwarebytes (v4.6.6) gave me a pop-up,
saying that Steam is a Trojan as you can see here:

https://steamcommunity.com/sharedfiles/filedetails/?id=3106081286


I have never seen this before so i thought it was strange.
Anyone else have this happen today?
Last edited by |{sT}| SuperConker v4.0; Dec 6, 2023 @ 10:57am
Originally posted by Kage Goomba:
Originally posted by |{sT}| SuperConker:
Originally posted by Seraphita:
Which means it is entirely a user issue.
I have both Malwarebytes and Windows Defender and i used both to run a full scan just now,
none of them finds anything suspicious after a full scan.


For about an hour earlier today, Malwarebytes gave me 3 pop-ups about this
(and only while Steam was updating Cyberpunk).

The message pointed towards the connection Steam was making to the CDN for Cyberpunk
(hence the IP-Address you can see in the screenshot).


But since Malwarebytes itself no longer finds any issues it was probably just a false-positive.
This is the first time i have ever seen this, so i doubt this was a user-issue.

I also haven't played Cyberpunk lately and only noticed this due to today's Patch.

The user issue is just conjecture as folks missed the prior info and linked threads.
Its a false positive.

Report it to Malwarebytes so they can flag it for the future and simply move on - not a big deal.
May want to indicate its not an issue or mark this as an answer so others don't panic and go crazy like they love to do so often.

Malwarebytes is top shelf - its worth reporting the issue with whatever logs you have...if someone hasn't already done so.
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Showing 1-15 of 53 comments
nullable Dec 5, 2023 @ 8:18am 
False positives happen. It's not uncommon. Malwarebytes is just a tool, and if you know for a fact that a bit of software is safe then it might just be a false positive. If you don't know, then stop using it until you get that sorted.
Last edited by nullable; Dec 5, 2023 @ 8:21am
AustrAlien2010 Dec 5, 2023 @ 8:29am 
If that's the case then that's very sloppy, because its a very popular game. They're going to scare a lot of customers away with these kind of screw ups.

Unbelievable! Such amateurs. Are they willfully trying to go out of business? These kind of screw ups should not even be happening. We're talking about companies with millions of users. These events have a major impact on their future profits if everyone has this issue.

If its true, post it on the game's forum.
Last edited by AustrAlien2010; Dec 5, 2023 @ 8:47am
Komarimaru Dec 5, 2023 @ 8:45am 
Well, I have Malwarebytes as well, 4.6.6 and no issues. Is your Steam files un modified? If so, I'd let Malwarebyes look at the logs.
Didn't realize it only happens with Cyberpunk 2077, so i made a Tread over there too

https://steamcommunity.com/app/1091500/discussions/7/4029096058474548059/


I don't doubt it's a false-positive (i've used Steam for 19 years so i know it's safe lol)
but some people might get scared by this messae.
Last edited by |{sT}| SuperConker v4.0; Dec 5, 2023 @ 8:46am
Kage Goomba Dec 5, 2023 @ 9:46am 
Flag it/report it to Malewarebytes and move on - it happens from time to time.
Only thing i find weird about this is that it only happens when downloading/updating Cyberpunk.

When testing with other games nothing happens.
Spawn of Totoro Dec 5, 2023 @ 10:31am 
Using Kaspersky and downloaded the same Cyberpunk 2077 update. No issues with the AV detecting anything.
Last edited by Spawn of Totoro; Dec 5, 2023 @ 10:31am
Stingray_tm Dec 5, 2023 @ 1:40pm 
Originally posted by AustrAlien2010:
If that's the case then that's very sloppy, because its a very popular game. They're going to scare a lot of customers away with these kind of screw ups.

Unbelievable! Such amateurs. Are they willfully trying to go out of business? These kind of screw ups should not even be happening. We're talking about companies with millions of users. These events have a major impact on their future profits if everyone has this issue.

If its true, post it on the game's forum.

False positives are very common for all anti virus software. They have algorithms that try to find new viruses without having them in any database and depending on how strict the rules are, the more false positives are detected,. I had a virus detection in a WordPerfect file I personally created in 1997 on my first pc and had it on a backup CD for all that time and having scanned it several times automatically over the next 20 years, so I was 6000% sure it was a false positive. After the next virus definition update the false positive was gone.

If you want to be extra sure most AVs have an option to send the file as false positive to the vendor and then they manually check it.
Last edited by Stingray_tm; Dec 5, 2023 @ 1:42pm
Xautos Dec 5, 2023 @ 1:41pm 
Malwarebytes is a good AV. isn't there a way to report the false positive to them?
Kage Goomba Dec 5, 2023 @ 1:43pm 
Originally posted by Stingray_tm:
Originally posted by AustrAlien2010:
If that's the case then that's very sloppy, because its a very popular game. They're going to scare a lot of customers away with these kind of screw ups.

Unbelievable! Such amateurs. Are they willfully trying to go out of business? These kind of screw ups should not even be happening. We're talking about companies with millions of users. These events have a major impact on their future profits if everyone has this issue.

If its true, post it on the game's forum.

False positives are very common for all anti virus software. They have algorithms that try to find new viruses without having them in any database and depending on how strict the rules are, the more false positives are detected,. I had a virus detection in a file I personally created in 1997 on my first pc and had it on a backup CD. After the next virus definition update the false positive was gone.

If you want to be extra sure most AVs have an option to send the file as false positive to the vendor and then they manually check it.

the last one I saw was webroot's fudge up - the file in question however is a frequent target of viruses and corruption - used to decompress files on the fly without external interaction (which is kind of silly as all major OS's have a variation of Zip Compression/Decompression)

False positives are more likely to be a thing more than ever with the ever increasing threat of ransomware/malware.

They come and go in phases.

It helps when you actually research it - and flag the file on the dev so they know not to target it for whatever algorithm flagged it.

Better over cautious than not.
Kage Goomba Dec 5, 2023 @ 1:44pm 
Originally posted by Xautos:
Malwarebytes is a good AV. isn't there a way to report the false positive to them?

There is - they are top shelf - for a free software (even paid) they are very reputable.
Don't remember how - but I'm sure they do.

I only use them as a backup option when the primaries go down or have issues.
Spawn of Totoro Dec 5, 2023 @ 2:21pm 
Originally posted by Kage Goomba:
Originally posted by Xautos:
Malwarebytes is a good AV. isn't there a way to report the false positive to them?

There is - they are top shelf - for a free software (even paid) they are very reputable.
Don't remember how - but I'm sure they do.

I only use them as a backup option when the primaries go down or have issues.

I had issues with their software when they changed from Anti-Malware to an Anti-Virus, so I stopped using them. Kept getting parts of their protection shutting off and not being able to be turned on. This was many years ago. Their support couldn't fix it and so I gave up.

Plus I only wanted them for the anti-malware in conjunction with another AV, but that set-up stopped working.

Still have two life time license keys in a drawer somewhere...
Last edited by Spawn of Totoro; Dec 5, 2023 @ 2:22pm
Kage Goomba Dec 5, 2023 @ 2:22pm 
Originally posted by Spawn of Totoro:
Originally posted by Kage Goomba:

There is - they are top shelf - for a free software (even paid) they are very reputable.
Don't remember how - but I'm sure they do.

I only use them as a backup option when the primaries go down or have issues.

I had issues with their software when they changed from Anti-Malware to an Anti-Virus, so I stopped using them. Kept getting parts of their protection shutting off and not being able to be turned on. This was many years ago.

Still have two life time license keys in a drawer somewhere...

Many years ago?
I'm surprised to be honest.
Not heard of any negative remarks for Malwarebytes in ages to be honest.
Spawn of Totoro Dec 5, 2023 @ 2:23pm 
Originally posted by Kage Goomba:
Many years ago?
I'm surprised to be honest.
Not heard of any negative remarks for Malwarebytes in ages to be honest.

Maybe around 8+ years ago. Been a LONG time, especially in the world of IT.

Bought the keys in a box at Fry's Electronics, back when they existed and were a decent place to go.
Last edited by Spawn of Totoro; Dec 5, 2023 @ 2:25pm
Kage Goomba Dec 5, 2023 @ 2:25pm 
Originally posted by Spawn of Totoro:
Originally posted by Kage Goomba:
Many years ago?
I'm surprised to be honest.
Not heard of any negative remarks for Malwarebytes in ages to be honest.

Maybe around 8+ years ago. Been a LONG time, especially in the world of IT.

*counts fingers* yeah that's way back - must have missed that snafu.

Today as far as I know its quite competent. Not ever paid for it - as I already have a paid suite.
But still worthy.
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Date Posted: Dec 5, 2023 @ 8:16am
Posts: 53