Why Does Avast For Mac Show 5 Infections But Only Lists One
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Thank you Russell, I have downloaded the Avast Security and it finish and got and message saying the Infection Blocked, Avast Filesystem shield has blocked a threat and moved it to the Chest. Now, the Avast security has an icon, how do I execute the deep scan using the avast security? When i am an existing avast customer why do i need to reinstall antivirus each time i renew.why can't my antivirus renewal date simply be extended by the term i select. Read more ChrisC. Anti Virus software for the Mac is only going to identify Windows viruses which can't harm your Mac. It is possible for a Mac user to pass a Windows virus attached to an email to a Windows user which may be a reason to use something like ClamXav to scan your Mac. But I am unsure since I only have one MacBook and no one else that I know that has a mac has updated the OS to High Sierra. But Avast keeps labeling this as a potential “Cryptonight” virus and no one else online has posted anything about this issue. And that's when avast does its best work. I personally run ESET's NOD32 which is a great software and even that will report certain files cannot be scanned. I have had one infection and that is all.
Sites get hacked with monotonous regularity now and is one of the most common methods of infection. It does look like this site has been hacked as there is a large (single line) chunk of obfuscated javascript in a script tag outside the frameset tag of this page, which to me is highly suspect (see image1 single line broken to make it easier to. Jun 29, 2016 Review of Avast Free Antivirus for Mac Avast is one of the most popular free antivirus programs, and they have a version for Mac OS X. Avast Free Antivirus for Mac offers most of the same features, is free to download, doesn’t include advertisements, and is generally unobtrusive.
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Yesterday I ran a full system scan using my Avast antivirus software and it found a infection file. The file's location is :
Avast categorizes the infection file as :
So, after deleting the file I did several more full system scans to check to see if there were any more files. I found nothing, until I restarted my macbook pro today. The file reappeared in the same location. So I decided to let Avast put it in the virus chest, restarted the laptop, and again the file was in the same location again. Therefore the virus is re-creating the file every restart of the laptop.
I want to avoid wiping the laptop and re-installing everything, so that is why I am here. I researched the file path and cryptonight and found out that cryptonight is/can be malicious code that can run in the background of someone's computer to mine cryptocurrency. I've been monitoring my CPU usage, Memory, and Network and I haven't seen a single odd process running. My CPU is running below 30%, my RAM is generally below 5GB (installed 16GB), and my network hasn't had any processes sending out/receiving large amount of data. So if something is mining in the background, I can't tell at all. I have no clue what to do.
My Avast runs full system scans every week, so this just recently became an issue this week. I checked all of my chrome extensions and nothing is out of order, I haven't downloaded anything special within the past week, besides the new Mac operating system (macOS High Sierra 10.13.1). So I have no clue where this has came from to be honest and I have no clue how to get rid of it. Can someone please help me out.
Rachel Maddow Show 5/17/18
I suspect that this supposed “virus” is coming from the Apple update and that it is just a pre-installed file that is created and runs every time the OS is booted/rebooted. But I am unsure since I only have one MacBook and no one else that I know that has a mac has updated the OS to High Sierra. But Avast keeps labeling this as a potential “Cryptonight” virus and no one else online has posted anything about this issue. Therefore, a common virus removal forum isn't helpful in my situation, since I've already attempted to remove it with both Avast, malwarebytes, and manually.
JakeGould1 Answer
Pretty sure there is no virus, malware or trojan at play and his is all a highly coincidental false positive.
It’s most likely a false positive since /var/db/uuidtext/ is related to the new “Unified Logging” subsystem that was introduced in macOS Sierra (10.2). As this article explains:
The first file path (/var/db/diagnostics/) contains the log files. These files are named with a timestamp filename following the pattern logdata.Persistent.YYYYMMDDTHHMMSS.tracev3. These files are binary files that we’ll have to use a new utility on macOS to parse them. This directory contains some other files as well including additional log *.tracev3 files and others that contain logging metadata. The second file path (/var/db/uuidtext/) contains files that are references in the main *.tracev3 log files.
But in your case the “magic” seems to come from the hash:
Just check out this reference for known Windows malware files that references that one specific hash. Congratulations! Your Mac has magically created a filename that matches a known vector that has been primarily seen on Windows systems… But you are on a Mac and this filename is just a hash that is connected to the “Unified Logging” database system’s file structure and it is completely coincidental that it matches that malware filename and should not mean anything.
And the reason that specific file seems to regenerate is based on this detail from the above explanation:
The second file path (/var/db/uuidtext/) contains files that are references in the main *.tracev3 log files.
So you delete the file in /var/db/uuidtext/, but all it is is a reference to what is in /var/db/diagnostics/. So when you reboot, it sees it is missing and recreates it in /var/db/uuidtext/.
As for what to do now? Well, you can either tolerate the Avast alerts or you can download a cache cleaning tool such as Onyx and just force the logs to be recreated by truly purging them from your system; not just that one BC8EE8D09234D99DD8B85A99E46C64 file. Hopefully the hash names of the files it regenerates after a full cleaning won’t accidentally match a known malware file again.
UPDATE 1: It seems like Avast staff acknowledges the issue in this post on their forums:
I can confirm this is a false positive. The superuser.com post describes the issue quite well - MacOS seems to have accidentally created a file that contains fragments of malicious cryptocurrency miner which also happen to trigger one of our detections.
Now what is really odd about this statement is the phrase, “…MacOS seems to have accidentally created a file that contains fragments of malicious cryptocurrency miner.”
What? Is this implying that someone on the core macOS software development team at Apple somehow “accidentally” setup the system so it generates neutered fragments of a known malicious cryptocurrency miner? Has anyone contacted Apple directly about this? This all seems a bit crazy.
UPDATE 2: This issue is further explained by someone Radek Brich the Avast forums as simply Avast self-identifying itself:
Mac os x 10.8 download free. Besides the World’s most popular antivirus for Windows, Avast is offering a comprehensive antivirus for Apple Mac OS X (Macintosh). The product is called Avast Free Mac Security 2018 (version 11) and same as the Windows version it’s completely for free. Avast for 10.5.8 social advice Mac users interested in Avast for 10.5.8 generally download. May 24, 2006 Is there a version of avast! For Mac OS X (universal) planned or developed? Hopefully there is and hopefully it'll be managed by ADNM! Thanks for an information update! Avast Antivirus Mac Os X 10.5.8: Antivirus is the must have app for MAC.Due to the increased number of different viruses and hacking techniques, your personal data is always at the risk. Hacker can use your personal data for any type of illegal activities and you will found yourself in trouble soon. All you need is a Mac running macOS 10.9 (Mavericks) or later with at least 500 MB of disk space. An Internet connection is also required for automatic security updates. Avast Security for Mac.
Hello, I'll just add a bit more information.
The file is created by MacOS system, it's actually part of 'cpu usage' diagnostic report. The report is created because Avast uses the CPU heavily during the scan.
The UUID (7BBC8EE8-D092-34D9-9DD8-B85A99E46C64) identifies a library which is a part of Avast detections DB (algo.so). The content of the file is debugging information extracted from the library. Unfortunately, this seems to contain a string which is in return detected by Avast as a malware.
(The 'rude' texts are probably just names of malware.)
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