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

ComboFix.exe download is corrupt


  • Please log in to reply
6 replies to this topic

#1 hm2k

hm2k

  • Members
  • 5 posts
  • OFFLINE
  •  
  • Local time:08:47 PM

Posted 18 January 2010 - 03:25 PM

http://download.bleepingcomputer.com/sUBs/ComboFix.exe downloads at 192KB.

It errors saying "Some installation files are corrupt. Please download a fresh copy and retry the installation" and fails to continue or exit.

Try it yourself.

Analysis of the file can be found here:
http://www.virustotal.com/analisis/bc83c51...deeb-1263845477

The copy here is different:
http://www.forospyware.com/sUBs/ComboFix.exe which is 1.07MB.

This version does not work either.

http://www.virustotal.com/analisis/ceedc15...abae-1263846045

I've tried downloading both from multiple locations on multiple computers but it was still corrupt.

What's going on here? How come it's not working?

The last genuine working copy I could find is here:

http://web.archive.org/web/20070628164655/...Bs/ComboFix.exe
http://www.virustotal.com/analisis/448799a...7215-1263848888

Edit: Is this related? -> http://download.bleepingcomputer.com/sUBs/ComboFix.html -- there is no date or time stamp on this page so I cannot tell for sure, however twitter seems to suggest otherwise... http://twitter.com/BleepinComputer/status/6843454166

Edited by hm2k, 18 January 2010 - 04:13 PM.


BC AdBot (Login to Remove)

 


#2 swang21

swang21

  • Members
  • 14 posts
  • OFFLINE
  •  
  • Gender:Female
  • Location:NJ
  • Local time:03:47 PM

Posted 18 January 2010 - 06:58 PM

I am having the same problem...
From their facebook site, an update was just posted about 10 minutes ago:

BleepingComputer: There appears to be a problem with the Combofix executables not being the right size. Please be patient while the developer rectifies this.

Looks like we just have to wait until it's fixed. :thumbsup: patience hehe
also, don't download it from other sites, just the 2 they recommend!

#3 Animal

Animal

    Bleepin' Animinion


  • Site Admin
  • 35,524 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Where You Least Expect Me To Be
  • Local time:01:47 PM

Posted 18 January 2010 - 07:32 PM

Developer has been alerted. Waiting to hear back.


The Internet is so big, so powerful and pointless that for some people it is a complete substitute for life.
Andrew Brown (1938-1994)


A learning experience is one of those things that say, "You know that thing you just did? Don't do that." Douglas Adams (1952-2001)


"Imagination is more important than knowledge. Knowledge is limited. Imagination circles the world." Albert Einstein (1879-1955)


Follow BleepingComputer on: Facebook | Twitter | Google+

#4 hm2k

hm2k
  • Topic Starter

  • Members
  • 5 posts
  • OFFLINE
  •  
  • Local time:08:47 PM

Posted 19 January 2010 - 04:36 AM

Request: In future please provide a link to the virustotal.com analysis of the latest genuine ComboFix.exe so we are able to verify that we have the correct and most recent version.

Alternatively, at least provide md5/sha1 hashes so we can verify the checksum.

Thanks.

PS...

BleepingComputer: Combofix should be available again. (7 hours ago)

Latest ComboFix.exe Analysis: http://www.virustotal.com/analisis/dde3732...16d2-1263890201

Please remove or update this page: http://download.bleepingcomputer.com/sUBs/ComboFix.html

If you are looking for authorised UK mirrors, I would be happy to host a mirror of ComboFix.exe on www.fixr.co.uk.

Thanks again.

Edited by hm2k, 19 January 2010 - 05:04 AM.


#5 quietman7

quietman7

    Bleepin' Janitor


  • Global Moderator
  • 51,591 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Virginia, USA
  • Local time:04:47 PM

Posted 19 January 2010 - 09:31 AM

Only the developer (sUBs) can approve hosting sites and he has chosen to keep them limited. Other sites hosting ComboFix are not authorized mirrors and should not be used.

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 a "Risk Tool", "Hacking Tool", "Potentially Unwanted Program", 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, registry fixes, malware strings it contains and the type of security engine that was used during the scan.

Common detections of embedded files include nircmd.exe as shown in your link to Virustotal. NirCmd is a command-line utility that allows writing to and deletion of values and keys in the registry and is used in other specialized fix tools as well as CF.

Such programs have legitimate uses in contexts where a Malware Removal Expert asked you to use the tool or when an authorized user/administrator has knowingly installed it. 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. These detections do not necessarily mean the file is malware or a bad program.

It means it has the potential for being misused by others or that it was simply detected as suspicious 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".

Information on CF download will be updated when sUBs gives the green light to us.
.
.
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

#6 hm2k

hm2k
  • Topic Starter

  • Members
  • 5 posts
  • OFFLINE
  •  
  • Local time:08:47 PM

Posted 19 January 2010 - 10:07 AM

Your reply is condescending and non-constructive.

I KNOW ComboFix isn't malware, I KNOW what a false positive is.

Please re-read my post.

I'd prefer if you would edit your reply as appropriate, preferably removing the patronising details.

Note: VirusTotal is useful as it shows the md5 and sha1 checksum of the file you send it.

Edited by hm2k, 19 January 2010 - 10:09 AM.


#7 quietman7

quietman7

    Bleepin' Janitor


  • Global Moderator
  • 51,591 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:Virginia, USA
  • Local time:04:47 PM

Posted 19 January 2010 - 10:25 AM

My intent was not to be condescending and non-constructive.

Other members beside you are reading this topic and they may not understand when looking at the results provided by VirusTotal. My reply was to ensure everyone has the information and understanding that at times CF may be detected as a threat when that is not the case.
.
.
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