Jump to content


 


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.


Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.

Photo

I run combofix from bleeping computer through virustotal.com and it found virus


  • Please log in to reply
2 replies to this topic

#1 GSDodge

GSDodge

  • Members
  • 1 posts
  • OFFLINE
  •  
  • Local time:08:59 PM

Posted 31 March 2015 - 11:01 AM

and tweaking toolbox through virustotal.com how reliable is this website for scanning files?



BC AdBot (Login to Remove)

 


#2 Aura

Aura

    Bleepin' Special Ops


  • Malware Response Team
  • 19,664 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:08:59 PM

Posted 31 March 2015 - 12:29 PM

Hi GSDodge :)

Due to the way most of these tools works (the ones hosted on BleepingComputer), some Antivirus will flag them as suspicious or even malicious. This is because they access information and/or use techniques that are often used by malware to do their job and output logs. However, every tools and programs hosted on BleepingComputer are 100% safe and the detection from Antivirus vendors are what we call false positives. VirusTotal is a very reliable online scanner to obtain information on a file, however you shouldn't rely on it at 100% and try to confirm/validate your findings if one of the file you scanned on it comeback clean or with detections.

I can guarantee you that ComboFix and Tweaking.com Technician Toolbox are completely safe to use :) On a side note, you shouldn't use ComboFix by yourself unless you have been trained to use it or under the supervision of a trained malware removal specialist. ComboFix is a very powerful tool that can easily break down a Windows system if wrongly/poorly used. If you have questions about this tool, you can read quietman's FAQ on it here:

http://www.bleepingcomputer.com/forums/t/273628/combofix-usage-questions-help-look-here/

unite_blue.png
Security Administrator | Sysnative Windows Update Senior Analyst | Malware Hunter | @SecurityAura
My timezone UTC-05:00 (East. Coast). If I didn't reply to you within 48 hours, please send me a PM.


#3 quietman7

quietman7

    Bleepin' Janitor


  • Global Moderator
  • 51,490 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Virginia, USA
  • Local time:08:59 PM

Posted 31 March 2015 - 01:14 PM

This is a false positive.

Certain embedded files that are part of legitimate programs or specialized fix tools such as Combofix may at times be detected by some anti-virus and anti-malware scanners as suspicious, a Risk Tool, Hacking Tool, Potentially Unwanted Program, a possible threat or even Malware (virus/trojan) when that is not the case. This occurs for a variety of reasons to include the tool's compiler, the files it uses, whether files are compressed or packed, what behavior (routines, scripts, etc) it performs, any registry strings it may contain and the type of security engine that was used during the scan. Other legitimate files which may be obfuscated, encrypted or password protected in order to conceal itself so they do not allow access for scanning but often trigger alerts by anti-virus software.

When flagged by an anti-virus or security scanner, it's because the program includes features, behavior or files that appear suspicious or which can potentially be used for malicious purposes. Compressed and packed files in particular are often flagged as suspicious by security software because they have difficulty reading what is inside them. These detections do not necessarily mean the file is malicious or a bad program. It means it has the potential for being misused by others or that it was simply detected as suspicious or a threat due to the security program's heuristic analysis engine which provides the ability to detect possible new variants of malware. Anti-virus scanners cannot distinguish between "good" and "malicious" use of such programs, therefore they may alert you or even automatically remove them. In these cases the detection is a "false positive" and can be ignored. Either have your anti-virus ignore the detection or temporarily disable it until you download and run the tool.

The problem is really with the anti-virus vendors who keep targeting these embedded files and NOT with ComboFix. We can inform the developer but he has encountered this issue many times before and in most cases there isn't much he can do about it. Once the detection is reported to the anti-virus vendor, they are usually quick to fix it by releasing an updated definition database.
.
.
Windows Insider MVP 2017-2018
Microsoft MVP Reconnect 2016
Microsoft MVP Consumer Security 2007-2015 kO7xOZh.gif
Member of UNITE, Unified Network of Instructors and Trusted Eliminators

If I have been helpful & you'd like to consider a donation, click 38WxTfO.gif




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users