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combofix download


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6 replies to this topic

#1 vealeww

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Posted 05 December 2013 - 03:57 PM

Hi, I'm new to bleeping computer but have downloaded combofix in the past with no problems. Now it starts to download and at the end it says "download failed". Not sure why, I did the ctrl panel, internet options security etc stuff but did not help.  Any ideas?  Thanks wwv

Edit: Moved topic from Windows 7 to the more appropriate forum. ~ Animal

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#2 noknojon

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Posted 05 December 2013 - 04:46 PM

Hello -

There are 3 options I can see

1 . It is not a Windows 7 problem at this time, (post to Malware Removal Logs forum area)

2 . It is an infection problem stopping downloads, (post to Malware Removal Logs forum area)

3 . Uninstall any version of ComboFix installed, by this method - Press Windows Key + R together, and in the Run box you see, type Combofix /uninstall (note the space between Combofix and / ) then press Enter or OK - This will remove any currently installed version of the program.

 

Now :Please read the ComboFix guide below. If your problem continues or is not solved - - Please post to the Malware Removal area of the forum -

Have you fully read ComboFix usage, Questions, Help? - Look here
 

There are many options in ComboFix that require special reasons for using it, and other reasons for not using it. You may have an infection that prevents the download.

 

If you think you may be infected please follow the guide below -

 

Please follow the instructions in THIS PREP GUIDE starting at Step #6.

NOTE - If you cannot complete a step, skip it and continue.

Once the proper DDS logs are created, then make a NEW TOPIC and post it to =>
Virus, Trojan, Spyware, and Malware Removal Logs. area -

 

The experts will assess your problem fully in that area -

 

Thank You -



#3 itzsm00th

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Posted 05 December 2013 - 06:48 PM

I am having the same issue. My McAfee antivirus flagged the combofix download from bleepingcomputer.com as an infected with the artemis virus and deleted the file and blocked access to it. This has never happened before until today. It appears the file may actually be infected OR something in the application has changed causing mcafee to pick up a false positive.



#4 quietman7

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Posted 05 December 2013 - 06:57 PM

Combofix is not malware. However, 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. For example, Catchme is a rootkit scanner that detects userland rootkits and is incorporated with some specialized fix tools like Combofix and GMER.

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.
 
BTW, Artemis technology is the "Active Protection" component of McAfee's Security Center which uses a combination of signature and behavior analysis to check with McAfee servers in real-time to identify possible new malware threats. This is accomplished by adding heuristics to the virus database. McAfee then uses this heuristic detection to analyze the cataloged behaviors and assess the likelihood of possible new variants of malware before the vendor can get samples and update the program's definitions for detection. Artemis is not the name of an actual virus, but an alert displayed by McAfee when it thinks it may have found a new virus. Artemis is included in the detection name for any file that is quarantined or blocked by McAfee's Global Threat Intelligence (GTI) technology for enhanced detection of unknown threats based on the file's behavior.

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.
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#5 quietman7

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Posted 05 December 2013 - 07:00 PM

@ vealeww

Were you attempting to download CF from BleepingComputer or somewhere else?
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#6 itzsm00th

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Posted 05 December 2013 - 07:26 PM

Thank you for the quick and thorough response, Quietman7. I did download the file on another system running a different antivirus product (bitdefender) and it was not flagged as containing malware/virus so it must be the case that McAfee updated its definitions to flag ComboFix as malware. I did try your suggestion regarding disabling mcafee and downloading it again and now it is able to download successfully.



#7 quietman7

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Posted 05 December 2013 - 07:42 PM

You're welcome.

If you need assistance with malware removal, be sure to follow the instructions provided by noknojon.
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