W32.HLLW.Lovgate.G@mm
W32.HLLW.Lovgate.G@mm
GROBAR
W32.HLLW.Lovgate.G@mm
W32.HLLW.Lovgate.G@mm is a minor variant of W32.HLLW.Lovgate.C@mm. This worm contains mass-mailing and backdoor functionalities. This variant does not properly function under Windows 95/98/Me systems. To spread itself, the worm attempts to reply to incoming email messages and to email addresses that it finds in HTML files. The subject and attachment of the incoming email are chosen from a predefined list. The attachment will have a .exe, .pif, or .scr file extension. W32.HLLW.Lovgate.G@mm also attempts to copy itself to all the computers on a local network, and then attempts to infect these computers. The worm also has a backdoor Trojan capability. NOTE: Virus definitions dated March 24, 2003 may detect this threat as W32.HLLW.Lovgate.C@mm. Damage Payload: Large scale e-mailing: Attempts to reply to incoming email messages and to email addresses that it finds in HTML files. Compromises security settings: Allows unauthorized access to infected computer. Distribution Subject of email: Chosen from a predetermined list Name of attachment: Chosen from a predetermined list with a .exe, .pif, or .scr file extension Size of attachment: 107,008 bytes Ports: TCP 1092 Shared drives: Copies across shared drives Also Known As: WORM_LOVGATE.F [Trend], W32/Lovgate.f@M [McAfee], W32/Lovgate-E [Sophos] Type: Worm Infection Length: 107,008 bytes Systems Affected: Windows NT, Windows 2000, Windows XP Systems Not Affected: Windows 3.x, Macintosh, OS/2, UNIX, Linux [img]http://securityresponse.symantec.com/avcenter/graphics/ssrc/writeups/section_title_technical.gif[/img] When W32.HLLW.Lovgate.G@mm is executed, it does the following: 1. Copies itself to the %System% folder as these files: Ravmond.exe WinGate.exe WinDriver.exe Winrpc.exe Winhelp.exe Iexplore.exe 2. Copies the following files to the %System% folder, and then executes them: Task688.dll Kernel66.dll Ily688.dll Reg678.dll 111.dll These files are the backdoor Trojan components of W32.HLLW.Lovgate.G@mm. Symantec antivirus products detect the files as W32.HLLW.Lovgate.G@mm. 3. Adds the values: winhelp %system%\winhelp.exe WinGate initialize %system%\WinGate.exe -remoteshell Remote Procedure Call Locator rundll32.exe reg678.dll to the registry key: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run so that the worm runs when you start Windows. 4. Adds the value: run RAVMOND.EXE to the registry key: HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows 5. Modifies the (Default) value of the registry key: HKEY_CLASS_ROOT\txtfile\shell\open\command to: winrpc.exe %1 so that the worm runs when you open any text file. 6. Copies itself to all the network-shared folders and subfolders as any of the following: Are you looking for Love.doc.exe autoexec.bat The world of lovers.txt.exe How To Hack Websites.exe Panda Titanium Crack.zip.exe Mafia Trainer!!!.exe 100 free essays school.pif AN-YOU-SUCK-IT.txt.pif Sex_For_You_Life.JPG.pif CloneCD + crack.exe Age of empires 2 crack.exe MoviezChannelsInstaler.exe Star Wars II Movie Full Downloader.exe Winrar + crack.exe SIMS FullDownloader.zip.exe MSN Password Hacker and Stealer.exe 7. Listens on TCP port 1092 and notifies the hacker using email addresses at 163.com and yahoo.com. 8. Runs a password authentication routine contained in the worm. After entering the correct password, the worm starts a command shell for the hacker. 9. Attempts to gather all the email addresses from the files and replies to all the incoming messages when they arrive in the Microsoft Outlook Inbox. Refer to the section, "Email routine details," for additional information. 10. Scans all the computers on the local network, using the following passwords to attempt to log in as "Administrator:" zxcv yxcv xxx win test123 test temp123 temp sybase super sex secret pwd pw123 Password owner oracle mypc123 mypc mypass123 mypass love login Login Internet home godblessyou god enable database computer alpha admin123 Admin abcd aaa 88888888 2600 2003 2002 123asd 123abc 123456789 1234567 123123 121212 11111111 110 007 00000000 000000 pass 54321 12345 password passwd server sql !@#$%^&* !@#$%^& !@#$%^ !@#$% asdfgh asdf !@#$ 1234 111 root abc123 12345678 abcdefg abcdef abc 888888 666666 111111 admin administrator guest 654321 123456 321 123 11. If the worm successfully logs on to the remote computer, it attempts to copy itself as: \\<remote computer name>\admin$\system32\netservices.exe and to start the file as the service, "Microsoft NetWork FireWall Services." Email routine details There are two possible email routines. Routine 1 The email messages will be formatted as follows: Subject: The subject will be one of the following: Reply to this! Let's Laugh Last Update for you Great Help Attached one Gift for u.. Hi Dear See the attachement Message: The message will be one of the following: For further assistance, please contact! Copy of your message, including all the headers is attached. This is the last cumulative update. Tiger Woods had two eagles Friday during his victory over Stephen Leaney. (AP Photo/Denis Poroy) Send reply if you want to be official beta tester. This message was created automatically by mail delivery software (Exim). It's the long-awaited film version of the Broadway hit. Set in the roaring 20's, this is the story of Chicago chorus girl Roxie Hart (Zellweger), who shoots her unfaithful lover (West). Adult content!!! Use with parental advisory. Patrick Ewing will give Knick fans something to cheer about Friday night. Send me your comments... Attachment: The attachment, which is a copy of the worm, will be one of the following: About_Me.txt.pif driver.exe Doom3 Preview!!!.exe enjoy.exe YOU_are_FAT!.TXT.pif Source.exe Interesting.exe README.TXT.pif images.pif Pics.ZIP.scr Routine 2 The email message will be formatted as follows: Subject: Re: <Original Subject> Message: <someone> wrote: === > <original message body> > === <original sender> auto-reply: > Get your FREE <original sender hostname> now! < If you can keep your head when all about you Are losing theirs and blaming it on you; If you can trust yourself when all men doubt you, But make allowance for their doubting too; If you can wait and not be tired by waiting, Or, being lied about,don't deal in lies, Or, being hated, don't give way to hating, And yet don't look too good, nor talk too wise; ... ... more look to the attachment. Attachment: The attachment, which is a copy of the worm, will be one of the following: the hardcore game-.pif Sex in Office.rm.scr Deutsch BloodPatch!.exe s3msong.MP3.pif Me_nude.AVI.pif How to Crack all gamez.exe Macromedia Flash.scr SETUP.EXE Shakira.zip.exe dreamweaver MX (crack).exe StarWars2 - CloneAttack.rm.scr Industry Giant II.exe DSL Modem Uncapper.rar.exe joke.pif Britney spears nude.exe.txt.exe I am For u.doc.exe [img]http://securityresponse.symantec.com/avcenter/graphics/ssrc/writeups/section_title_recommend.gif[/img] Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices": Turn off and remove unneeded services. By default, many operating systems install auxiliary services that are not critical, such as an FTP server, telnet, and a Web server. These services are avenues of attack. If they are removed, blended threats have less avenues of attack and you have fewer services to maintain through patch updates. If a blended threat exploits one or more network services, disable, or block access to, those services until a patch is applied. Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services. Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised. Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files. Isolate infected computers quickly to prevent further compromising your organization. Perform a forensic analysis and restore the computers using trusted media. Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched. [img]http://securityresponse.symantec.com/avcenter/graphics/ssrc/writeups/section_title_removal.gif[/img] The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines. 1. Update the virus definitions. 2. Run a full system scan and delete all the files detected as W32.HLLW.Lovgate.G@mm. 3. Reverse the changes made to the registry For specific details on each of these steps, read the following instructions. 1. Updating the virus definitions Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions: Running LiveUpdate, which is the easiest way to obtain virus definitions: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the Virus Definitions (LiveUpdate). Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted on U.S. business days (Monday through Friday). You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the Virus Definitions (Intelligent Updater). The Intelligent Updater virus definitions are available here. For detailed instructions on how to download and install the Intelligent Updater virus definitions from the Symantec Security Response Web site, click here. 2. Scanning for and deleting the infected files a. Start your Symantec antivirus program and make sure that it is configured to scan all the files. For Norton AntiVirus consumer products: Read the document, "How to configure Norton AntiVirus to scan all files." For Symantec AntiVirus Enterprise products: Read the document, "How to verify that a Symantec Corporate antivirus product is set to scan All Files." b. Run a full system scan. c. If any files are detected as infected with W32.HLLW.Lovgate.G@mm, click Delete. 3. Reversing the changes to the registry CAUTION: Symantec strongly recommends that you back up the registry before you make any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified keys only. Read the document, "How to make a backup of the Windows registry," for instructions. a. Click Start, and then click Run. (The Run dialog box appears.) b. Type regedit Then click OK. (The Registry Editor opens.) c. Navigate to the key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run d. In the right pane, delete the values: winhelp %system%\winhelp.exe WinGate initialize %system%\WinGate.exe -remoteshell Remote Procedure Call Locator rundll32.exe reg678.dll e. Navigate to the key: HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Windows f. In the right pane, delete the value: run RAVMOND.EXE g. Navigate to and select the key: HKEY_CLASSES_ROOT\txtfile\shell\open\command h. In the right pane, double-click the (Default) value. i. Delete the current value data, and replace it with the correct value for your version of Windows. NOTE: This value data varies with the version of Windows and, on some systems, the installation path. You may need to look at the same key on a working computer that has the same version of Windows and configuration to determine this. Two common value data are: Windows 98: C:\Windows\Notepad.exe % Windows 2000: %SystemRoot%\system32\NOTEPAD.EXE %1 j. Exit the Registry Editor.