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Article #283Re: Win32/RAMNIT.A Anyone?
From: Dustin
Date: Sat, 31 Jul 2010 23:21
Date: Sat, 31 Jul 2010 23:21
187 lines
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10051 bytes
John Slade <hhitman86@pacbell.net> wrote in news:L0p4o.32466$OU6.4877@newsfe20.iad: > On 7/29/2010 1:40 PM, David H. Lipman wrote: >> From: "John Slade"<hhitman86@pacbell.net> >> >> | On 7/29/2010 3:24 AM, David H. Lipman wrote: >>>> From: "John Slade"<hhitman86@pacbell.net> >> >>>> | On 7/27/2010 11:17 PM, RJK wrote: >> >> >>>>>> "David H. Lipman"<DLipman~nospam~@Verizon.Net >>>>>> <mailto:DLipman~nospam~@Verizon.Net>> wrote in message >>>>>> news:i2o47d0214h@news2.newsguy.com... >>>>>> From: >>>>>> "russg"<russgilb@sbcglobal.net<mailto:russgilb@sbcglobal.n >>>>>> et>> >> >>>>>> | snip stuff about experienced posters only. >> >>>>>> | I come here to learn, and there are some experts here. >>>>>> | The OP considers himself an expert and only wants >>>>>> | talk to experts. I would say his final approach of >>>>>> | wiping and re- installing the OS (which he didn't >>>>>> | mention), but first trying to save .docs, mp3 and other >>>>>> | important files, is the only solution. I learned that >>>>>> | RAMNIT.A is a PE infector, infects other known files, >>>>>> | like IE. Here's some info at sophos.com: >> >>>>>> | >> >>>>>> http://www.sophos.com/security/analyses/viruses-and-spyware/w32p >>>>>> atchedi.html?_log_ from= >>>>>> | rss >> >>>>>> | The OP knows the name of the malware, so he must have >>>>>> | submitted a sample somewhere. >> >>>>>> From Dave's first post... >>>>>> "Does anybody have EXPERIENCE with Win32/RAMNIT.A ? I'm >>>>>> having a devil of a >>>>>> time removing it. The only tool the detects it >>>>>> consistently is MS Security >>>>>> Essentials, and MSSE keeps counting it and "disinfecting" >>>>>> it." >> >>>>>> He didn't submit a sample somewhere, MSE scanned the >>>>>> system, detected it >>>>>> (Win32/RAMNIT.A ), but MSE failed to full remove and >>>>>> clean the system of it. Dave also >>>>>> indicated he tried Avast to no avail. >> >>>>>> -- >>>>>> Dave >>>>>> http://www.claymania.com/removal-trojan-adware.html >>>>>> Multi-AV - http://www.pctipp.ch/downloads/dl/35905.asp >>>>>> Having cast my eye through this post, I think I would >>>>>> have given PrevX a go :-) >>>>>> ...and having read >>>>>> http://www.symantec.com/security_response/writeup.jsp?doci >>>>>> d=2008-011517-3725-99 >> >>>>>> ...I think (seeing as Sophos is armed against it), I'd >>>>>> try Sophos CLS from Bart PE cd :-) >> >>>>>> regards, Richard >> >> >> >>>> | It seems the information I found on this worm is that it >>>> | probably hides in the "system volume information" folder that >>>> | is "read only" and "hidden" by default. The worm just keeps >>>> | getting reinstalled and can't be cleaned unless the permissions >>>> | are changed for that folder. The information on this site links >>>> | to instructions for cleaning RAMNIT.A. >> >>>> | http://www.ca.com/securityadvisor/virusinfo/virus.aspx?id=81059 >> >>>> | This links to information on how to disable "system >>>> | restore" in order to remove the infection. It may be possible >>>> | to use some offline scanner like BitDefender to remove the worm >>>> | but it's better done in Windows. >> >>>> Sorry, you are mis-interpreting the information. >> >>>> Malware doesn't "hide" in the "system volume information" folder. >>>> That is where the System Resore cache resides. What they are >>>> talking about is removing restore points such >>>> that you won't re-infect the PC if you restore the PC from a >>>> restore point that had made >>>> in an infected condition. >> >> | Some malware specifically uses the "system volume >> | information" folder to reinfect the computer. It will infect >> | multiple restore points even those that were there before the >> | particular worm was introduced. I've had some experience with >> | these. >> >> >>>> Howver, I have learned that ist is NOT a good idea to dump the >>>> System Restore cache while >>>> cleaning a PC. It is better to have an infected, working, PC >>>> than to have a a PC that may >>>> be unstable and you can't restore the PC to a stable but infected >>>> condition. Once the PC >>>> is thouroughly cleaned and verified and is stable then you you >>>> can dump the System Restore >>>> cache. >> >> | This is one reason us PROFESSIONALS do a complete drive >> | backup before we remove the infection in this way. That way if >> | something goes wrong, you can always go back to the beginning. >> >> | It's possible to allow writing to the folder in question. >> | I have cleaned a few computers in this way and I usually find >> | that the restore points are not worth saving. I've had >> | absolutely no systems lost due to cleaning out the system >> | restore points. Never lost one and never needed to use the >> | backup on these types of infections. I find it better to have a >> | professional do the malware removal than someone who risks >> | loosing everything because they're afraid to remove the restore >> | caches. >> >> | John >> >> >> You said... >> "Some malware specifically uses the "system volume information" >> folder to reinfect the computer." > > Yes that's exactly what I said. One think I've noticed > from 25 years of seeing malware is that the writers of malware > will use anything and everything to infect a system. They will > make it hard as possible to remove them too. > >> >> Since you also stated "...us PROFESSIONALS...". > > The professional thing to do is make a backup so you can > do what needs to be done to repair the system. I don't usually > hear other professionals say afraid to do something as simple as > removing restore points to repair a system. > >> What is that malware spaecifically. You should know it or it >> should be in your notes. >> > > I don't remember the exact name of the worms and trojans > as it was over a year ago when I removed the last one. There are > so many variants of existing malware and new malware out there. > As for my notes, I don't need notes on specific malware I just > do what it takes to remove whatever it is. My notes deal mostly > with behavior of the malware and what it takes to remove it. > However I still have the scanner logs I did then and I'll look > through them. You should also know that scanners can find > malware and not give it a name because it detects signatures and > behavior. The particular malware may not be in the database as yet. Wow. I had no idea.. /sarcasm. > You should know there is malware out there that will > trash the registry and it's backup. It will require some sort of > reinstall to get the system back working. I found it very rare > that I need to do a full reformat and reinstall because of > malware. Some malware will also corrupt system files and when > you remove them with scanners, it will make the installation > unbootable. This is yet another reason professionals will make a > backup if possible before removing infections. What software do you use for the backup? Are you storing the backup on read only media or a hard drive that could fail for any reason? > I know there are a lot of fly-by-night computer repair > people who are just there to do a quick fix and get paid, I find > myself cleaning up after a lot of them. I've encountered a few of those in my time as well.... I enjoy the work they provide me tho. Tell me something, John, as a PROFESSIONAL, have you written any of the tools you use for cleanup; or do you use the work others have written, such as myself, David lipman and many others? -- "I like your Christ. I don't like your Christians. They are so unlike your Christ." - author unknown.
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Newsgroups: alt.comp.virus,alt.comp.anti-virus,microsoft.public.security.virus,ba.internet
Subject: Re: Win32/RAMNIT.A Anyone?
From: Dustin <bughunter.dustin@gmail.com>
References: <i2lolb$s5r$1@news.eternal-september.org> <i2mveh$ogf$1@news.eternal-september.org> <i2nfok0tgi@news4.newsguy.com> <i2ns3d$ser$1@news.eternal-september.org> <i2nvud$mfo$4@news.eternal-september.org> <i2o1or01uos@news2.newsguy.com> <56e3916c-4af4-41a6-9f65-ea55a89369fa@i28g2000yqa.googlegroups.com> <i2o47d0214h@news2.newsguy.com> <dYP3o.40115$3%3.20843@newsfe23.iad> <tE74o.32165$OU6.25112@newsfe20.iad> <i2rksi028go@news3.newsguy.com> <Crj4o.33326$Bh2.32962@newsfe04.iad> <i2sopq01lhf@news4.newsguy.com> <L0p4o.32466$OU6.4877@newsfe20.iad>
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