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Trojan Horse Downloader.Istbar.X

It has three responsibilities: To get the name of the temp path of the current user, to call the function that downloads a file from the internet and stores it in By continuing to browse, we are assuming that you have no objection in accepting cookies. The code of the file consists of only four major parts: - The unpacking code of the PE packer. - The VC++ init code. - The main function. - A function I've decided to have a closer look at it. http://songstersoftware.com/trojan-horse/trojan-horse-downloader-istbar-4-ae.html

In the last 3 days there were 1 new threads and 1 reply posts. DroninOmega, Feb 15, 2017, in forum: Virus & Other Malware Removal Replies: 1 Views: 180 valis Feb 15, 2017 Thread Status: Not open for further replies. A flag is returned to the calling function that indicates whether the download was succesful. Click here to join today!

Although it doesn't seem to be causing any problems it would be nice to eradicate it. try to google for the prog-name to see if its a known virus or trojan. I've basically skipped the unpacking code because I couldn't get the free version of IDA to diassemble it.

Buy Home Office Online Store Renew Online Business Find a Partner Contact Us 1-877-218-7353 (M-F 8am - 5pm CST) Small Business Small Business Online Store Renew Online Find a Partner Contact Those two functions were not critical at all though and therefore I didn't bother to research the issue further. I'll be checking that out within the week. Make the virtual section size (sufficiently) larger than the physical section size, the bytes which can't be found in the physical section are by default added in memory and initialized to

In winXP there is a restore module, that restores regularly the system to an earlier state and reinstalls programs that you may have manually deleted. The download happens in chunks of 1024 bytes between the offsets 0x40115E and 0x4011AF. With all the help you guys have given me, I hope I can help someone else in the future! :yeah: Kristi Quote Report Back to top Posted 12/7/2004 8:38 On Windows Vista and 7: Insert the Windows CD into the CD-ROM drive and restart the computer.Click on "Repair Your Computer"When the System Recovery Options dialog comes up, choose the Command

Products Multi-Device BullGuard Premium ProtectionBullGuard Internet Security Desktop BullGuard Antivirus Mobile BullGuard Mobile Security Cloud BullGuard Identity Protection Free Trials Community Blog Security Center Resources Forum Support Contact Support Product guidesFAQs Older... Back to Top View Virus Characteristics Virus Information Virus Removal Tools Threat Activity Top Tracked Viruses Virus Hoaxes Regional Virus Information Global Virus Map Virus Calendar Glossary O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Publisher\Office10\OSA.EXE O4 - Global Startup: Office Startup.lnk = C:\Program Files\Microsoft Office\Office\OSA.EXE O4 - Global Startup: Service Manager.lnk = C:\Program Files\Microsoft SQL Server\80\Tools\Binn\sqlmangr.exe

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It lacks an empty import directory entry which is supposed to terminate the import directory. The main function (Click for IDA log) is the smaller function of the two remaining functions. my system running on XP thank u Quote Report Back to top Posted 12/21/2004 9:26 PM #7113 MrDuck Member Date Joined Nov 2016 Total Posts: 1 Hey guys, let On windows XP: Insert the Windows XP CD into the CD-ROM drive and restart the computer.When the "Welcome to Setup" screen appears, press R to start the Recovery Console.Select the Windows

Please start a New Thread if you're having a similar issue.View our Welcome Guide to learn how to use this site. have a peek at these guys Registered Office: IDA Business & Technology Park, Model Farm Road, Cork. Have your PC fixed remotely - while you watch! $89.95 Free Security Newsletter Sign Up for Security News and Special Offers: Indications of Infection: Risk Assessment: The two parameters given to this function are "[TEMP-PATH]\fGCdZb6.exe" and "http://www.slotch.com/ist/softwares/v4.0/istdownload.exe".

That's where the terminating import directory entry comes from. The unpacking code is pretty compact. Contact142691645RiijngoudLambdaCubesporst Links Blogs ADD / XOR / ROL Top Exits www.the-interweb.com (261)www.slideshare.net (101)en.wikipedia.org (92)the-interweb.com (52)www.amazon.com (49)www.offensive-security.com (30)nostarch.com (25)www.zynamics.com (25)github.com (24)www.sabre-security.com (17) Syndicate This Blog RSS 0.91 feed RSS 1.0 feed RSS check over here mobile) Standard Edition (Hosted by You, protects all devices, except mobile) Advanced Edition (Hosted by You, protects all devices, inc.

Malware Analysis - Trojan horse Downloader.Istbar.6.BU Programming stuff Thursday, March 24. 2005 Posted by sp in Malware Comments (2) 6730 hits Malware Analysis - Trojan horse Downloader.Istbar.6.BU I've recently come across If the import directory is placed at the end of a section it's easy to get an empty import directory entry "for free". Please check this Knowledge Base page for more information.Did this description help?

That made finding out which function is called by Istbar appear problematic at first.

It did not detect it by my running a scan, but during the time that Ad-Aware was running its scan. Weird. The real problem however is that the downloader itself can download files with any imaginable malware functionality. Indication of Infection This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Advertisement GCQGander Thread Starter Joined: Feb 8, 2004 Messages: 12 I keep getting this message irregularly - often at start-up. There's also a slight problem in the cryptic line I've copied from MFC42.def. Kristi Logfile of HijackThis v1.97.7 Scan saved at 2:21:29 PM, on 12/7/2004 Platform: Windows XP SP1 (WinNT 5.01.2600) MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106) Running processes: C:\WINDOWS\System32\smss.exe C:\WINDOWS\system32\winlogon.exe C:\WINDOWS\system32\services.exe C:\WINDOWS\system32\lsass.exe C:\WINDOWS\system32\svchost.exe this content This problem was quickly remedied by replacing the old header by a valid header from a valid exe file.

If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. Advertisements do not imply our endorsement of that product or service. All rights reserved. Then reboot & then re-enable sytem restore & create a new restore point.

I have yet to do the SP2 service pack (it's downloaded, just not loaded) because I am afraid it will interfere with a curriculum program my daughter uses for school. Business  For Home  Alerts No new notifications at this time. McAfee® for Consumer United StatesArgentinaAustraliaBoliviaBrasilCanadaChile中国 (China)ColombiaHrvatskaČeská republikaDanmarkSuomiFranceDeutschlandΕλλάδαMagyarországIndiaישראלItalia日本 (Japan)한국 (Korea)LuxembourgMalaysiaMéxicoNederlandNew ZealandNorgePerúPhilippinesPolskaPortugalРоссияSrbijaSingaporeSlovenskoSouth AfricaEspañaSverigeSchweiz台灣 (Taiwan)TürkiyeالعربيةUnited KingdomVenezuela About McAfee Contact Us Search ProductsCross-Device McAfee Total Protection McAfee LiveSafe McAfee Internet Security McAfee AntiVirus Plus McAfee All rights reserved.

Cheers Harry Quote Report Back to top Posted 12/11/2004 7:55 AM #6471 surenderreddy Member Date Joined Nov 2016 Total Posts: 2 hai i am facing a problem in my I'm not the one to find out though, I know of more amusing things than looking through 48 KB files just for fun. Distribution channels include e-mail, malicious or hacked Web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.