JS:Miner-S

Hello,
Avast block one site and mark it as JS:Miner-S. Athough i know on that site is coinhive miner, i use ublock origin to block it. So why Avast detect it? It is some new version that ublock not block?
Before that it was Miner C now is S, what is difference?
Thank you.

Hi,
Yes, detection JS:Miner-S blocks new coinhive scripts.

Lukas

Avast block one site and mark it as JS:Miner-S. Athough i know on that site is coinhive miner, i use ublock origin to block it. So why Avast detect it? [b]It is some new version that ublock not block?[/b]
Maybe, or avast webshield read the html code before Ublock
Before that it was Miner C now is S, what is difference?
Just like cars, there are many variations and all dont come from the same factory ;)

https://www.fortinet.com/blog/threat-research/the-growing-trend-of-coin-miner-javascript-infection.html

they may also add url block … double protection

what URL is it? post it none clickable

Sucuri >> https://sitecheck.sucuri.net/results/primeassteens.com

Malware entry: malware.cryptominer.3 >> http://labs.sucuri.net/db/malware/malware.cryptominer.3

HTML_sample scan >> https://www.virustotal.com/#/file/7da3ba6dd20d61ccb18bfb9785b5280890db417770401efd596fa0103b556d1a/detection

Sample.txt? Still dont understant what trigger this popup.

Website is infected with miner script … what is strange?

post screenshot of the popup

primeassteens.com >> HTML code

The .js file at that location changes, you find many previous versions (different MD5) searching VT

Yes it is possible, but if i go that site without ublock, avast report 2 detections. One C version that marked js. file and S version which marked html code. But when i block that js file by ublock, avast still report me S version even that miner cannot work without that js.

I found S version trigger this script:
(script)
var miner = new C o i n H i v e. A n o n y m o u s(‘XXXXXXXXXXXXXXXXXXXXXXXXX’, {
// threads: X,
throttle: X,
});
miner.start();
(/script)

Today i no longer see JS:Miner-S detection on that site although that code is still present. I saved html code to .txt file and send to Virustotal and also right clicked that file → scan by Avast. Both detect JS:Miner-S but web shield not. When i copied that code here, avast detect too. That means this code is whitelisted on that site?

Hello.

Script is contaminated by all links from primeassteens,not only homepage.

https://www.virustotal.com/#/file/b1a6d6d809bb0ed2c98c286cbc8b36fa0366b2a051cbb384e179685415dbea51/detection

Avast detected JS:Miner-S blocked is all, if this is not for,the address will connect to the server coinhive as authedmine unnoticed by the user and download i.e 2 variants.

worker-asmjs.min.js

https://www.virustotal.com/#/file/ee374ae08f22d91a92cfcf6b9d8b4cccfd0d57016e9d8fd3af9fbdbd36781b38/detection

coinhive.min[1].js

https://www.virustotal.com/#/file/5d514880ad502302dd4bf0ef8da5d38356385d1c43689f6739f6771ed7a4ef73/detection

JS Miner-C contained the known code Cryptojacking that used,it was modified with a new variant in the site of the coinhive, it is detected as BV:Miner-T [Trj] algoritm new CryptoNight.

Hello all!

I have this virus for a month or two and it connects on a site when I start firefox. Avast blocks this attempt but he doesn’t show where the virus is located, or perhaps it is in firefox. Can somebody help me locate it?

https://ibb.co/gau3Ud

https://ibb.co/gau3Ud

Miner script is found on this website scanning tool: http://urlquery.net/report/22b5edd4-362f-4845-b05d-af6c5286fd78

Please follow instructions here: https://forum.avast.com/index.php?topic=194892.0

Sass Drake will be notified once you post the logs.

I removed 51 threats but JS:Miner-S [Trj] is still there.

Logs from the Farbar Recovery Scan Tool.

Good job.

Sass Drake has been notified.

Yes “he” does

The JS:Miner-S [Trj] is detected on the website (-http://siska.tv/ = a porn site ) and not in your computer, however you have something trying to connect to that URL. Tried to clear your browsers surf history/cache ?

URL Blacklist check
https://www.virustotal.com/#/url/a160501d6ea44e2d7ebba72ccc184c5507f90a3916823132f11e59e3574cf9ec/detection

HTML scan
https://www.virustotal.com/#/file/599d2d25b1dceac8e4a8a385001b59cea6d9d92896f08be04fbb61e1cba21cd0/detection

https://sitecheck.sucuri.net/results/siska.tv

Open if Firefox this URL.

about:serviceworkers

And remove/unregister everything it lists.

Report status after that.

Sure, I have done all cleanings and a new installation of firefox but nothing changed.