Automated spreading of malware through vBulletin forums

Where would it be better to attack then where all the people trust each other?
A single individual or a group of individuals of which tracks lead to Turkish people and Chinese hosting or Chinese partners is spreading viruses though infected files and setup installations shared in vBulletin forums. It seems these individuals have a registration bot with captcha bypass mechanism for vBulletin 3.7.xx versions (may be other versions too) and they are using it to spread all kinds of malware.

I first found this when examining another Kaspersky 2009 installation located at:

http://www.httpshare.net/%E4%E5%F8%E3%E5%FA-%FA%E5%EB%F0%E5%FA-%7C-software-download/427522-kaspersky-antivirus-2009-full-34-p-ece-test-key-no-problem.html

The username spreading this message is “hakan_72_123″ and with a simple google search we can see:

http://www.google.com/search?hl=en&client=firefox-a&rls=org.mozilla%3Ahe%3Aofficial&hs=sgc&q=hakan_72_123&btnG=Search

Hakan is not very shy to use the bot with his own name, go figure maby he is infecting thousands of forums manually?!
Anyway he in www.vbhackers.com/members/hakan_72_123/ which explains a lot :)

So what did he do? he took the time to upload Kaspersky 2009 to

http://rapidshare.com/files/115362254/Kaspersky_2009_Full_Sueruem_by_hakan.rar

Well I just checked and it has been 2 month since I found it and the bad guy extended the business for torrents too, this is the same virus under the title “Kaspersky Antivirus 2009 Full + Key [App][www.zonatorrent.com] “:

http://isohunt.com/download/44622492/kaspersky.torrent

Inside the rar there is a txt file with the text:

1- program demo deðil full sürümdür.

2- key girmek için þu sýrayý takip et
license-merge-activate using key-brovse= buradan keyleri
çýkarttýðýn klasörü seçip listenin en altýndakin üzerine çýft týklayýp
keyi gir.

HAZIRLAYAN: Hakan

www.avrasyaforum.net

What they did is instead of the standard shared .msi file, they put a WinRAR self-extracting archive with an icon of an msi file. They made the archive so that WinRar’s shell extension doesn’t recognize it as extractable. Once executed it drops a file called svchost.exe in “%ProgramFiles%\Outlook Express\” which is a refreshing path to drop a trojan downloader in :)
It executes the svchost.exe (compressed with MiniPE) which then executes
the trojan downloaded to %temp%\wmoptimizer.dll using rundll32.exe:

rundll32.exe “%temp%\wmoptimizer.dll”, RunSetup_Install

svchost.exe uses the classic URLDownloadToFileW and ShellExecuteW to download and execute: http://loansquotesinsurance.com/f/Resident.bin

These is the whois information for http://loansquotesinsurance.com:

Registration Service Provided By: Chinese DQ Network Tech Corp.
Contact: xixipai@hotmail.com

Domain name: loansquotesinsurance.com

Registrant Contact:
Shawn Lee
Shawn Lee

B-902,Zhongxing Huayuan,No.1102,Zhongshan Dadao,Tianhe Distr
Guang Zhou, Guangdong 510660
CN

Administrative Contact:
Shawn Lee
Shawn Lee (webmasters@loansquotesinsurance.com)
+86.02033875805
Fax: +86.02033875805
B-902,Zhongxing Huayuan,No.1102,Zhongshan Dadao,Tianhe Distr
Guang Zhou, Guangdong 510660
CN

Technical Contact:
Shawn Lee
Shawn Lee (webmasters@loansquotesinsurance.com)
+86.02033875805
Fax: +86.02033875805
B-902,Zhongxing Huayuan,No.1102,Zhongshan Dadao,Tianhe Distr
Guang Zhou, Guangdong 510660
CN

The email xixipai@hotmail.com also registers “http://3290.com”

Registration Service Provided By: Chinese DQ Network Tech Corp.
Contact: xixipai@hotmail.com

Domain name: 3290.com

Administrative Contact:
Chinese DQ Network Tech Corp.
Ren XiaoFeng (xixipai@hotmail.com)
+1.05306260800
Fax: +299.05306260803
ZhongHuaDonglu 1038hao
HeZe, 274000
CN

Technical Contact:
Chinese DQ Network Tech Corp.
Ren XiaoFeng (xixipai@hotmail.com)
+1.05306260800
Fax: +299.05306260803
ZhongHuaDonglu 1038hao
HeZe, 274000
CN

Registrant Contact:
Chinese DQ Network Tech Corp.
Ren XiaoFeng

ZhongHuaDonglu 1038hao
HeZe, 274000
CN

Well this is the part where I can only say, if you are reading this and in some kind of cyber police, DO SOMETHING!!!

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  • root1981

    http://loansquotesinsurance.com/f/ is down.

    do you have a sample of wmoptimizer.dll and resident.bin ?

  • http://rafelivgi.blogspot.com/ Rafel Ivgi

    No but if you will open a mail.com account and follow all the “insurance” scam spam you will probably get to his new working(for a few days) domains.

  • gert

    Great post