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Virus:Worm/Lovgate.W
Date discovered:13/12/2012
Type:Worm
In the wild:Yes
Reported Infections:Medium
Distribution Potential:Medium
Damage Potential:Low to medium
Static file:Yes
File size:179.200 Bytes
MD5 checksum:EE60B144AEA5AA8550FD3E0A873CFF2C
VDF version:7.11.53.216

 General Methods of propagation:
   • Email
   • Local network


Aliases:
   •  Symantec: W32.HLLW.Lovgate.I@mm
   •  Mcafee: W32/Lovgate.w@M
   •  Kaspersky: Email-Worm.Win32.LovGate.gen
   •  TrendMicro: WORM_LOVGATE.W
   •  F-Secure: W32/Lovgate.W@mm
   •  Sophos: W32/Lovgate-AP
   •  Grisoft: I-Worm/Lovgate.X
   •  VirusBuster: I-Worm.Lovgate.BI
   •  Bitdefender: Win32.LovGate.W@mm


Platforms / OS:
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP


Side effects:
   • Disable security applications
   • Drops malicious files
   • Uses its own Email engine
   • Lowers security settings
   • Registry modification

 Files It copies itself to the following locations:
   • %SYSDIR%\WinDriver.exe
   • %SYSDIR%\Winexe.exe
   • %SYSDIR%\WinGate.exe
   • %SYSDIR%\RAVMOND.exe
   • %SYSDIR%\IEXPLORE.EXE
   • %TEMPDIR%\%random character string%
   • c:\SysBoot.EXE
   • %WINDIR%\SYSTRA.EXE
   • %SYSDIR%\WinHelp.exe



It drops a copy of itself using a filename from a list:
– To: %all shared folders% Using one of the following names:
   • 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




The following files are created:

– c:\AUTORUN.INF This is a non malicious text file with the following content:
   • [AUTORUN]
     Open="C:\SysBoot.EXE" /StartExplorer

– %SYSDIR%\kernel66.dll Further investigation pointed out that this file is malware, too.
– %SYSDIR%\ily668.dll Further investigation pointed out that this file is malware, too.
– %SYSDIR%\task668.dll Further investigation pointed out that this file is malware, too.
– %SYSDIR%\reg667.dll Further investigation pointed out that this file is malware, too.

 Registry The following registry keys are added in order to run the processes after reboot:

– [HKLM\software\microsoft\windows\currentversion\run\]
   • "WinGate initialize"="%SYSDIR%\WinGate.exe -remoteshell"
   • "Remote Procedure Call Locator"="RUNDLL32.EXE reg678.dll ondll_reg"
   • "WinHelp"="%SYSDIR%\WinHelp.exe"
   • "Program In Windows"="%SYSDIR%\IEXPLORE.EXE"

– [HKLM\software\microsoft\windows\currentversion\runservices\]
   • "SystemTra"="%WINDIR%\SysTra.EXE /SysTra:Kernel32.Dll"



The following registry key is added:

– [HKCU\software\microsoft\windows nt\currentversion\windows\]
   • "DebugOptions"="2048"
   • "Documents"=""
   • "DosPrint"="no"
   • "load"=""
   • "NetMessage"="no"
   • "NullPort"="None"
   • "Programs"="com exe bat pif cmd"
   • "run"="RAVMOND.exe"



The following registry key is changed:

– [HKCR\exefile\shell\open\command]
   Old value:
   • @="\"%1\" %*"
   New value:
   • @="%SYSDIR%\winexe.exe \"%1\" %*"

 Email It uses Microsoft Outlook in order to send emails. The characteristics are described below:
It uses the Messaging Application Programming Interface (MAPI) in order to send a reply to emails stored in the inbox. The characteristics are further described:


From:
The sender address is the user's Outlook account.


To:
– Email addresses found in specific files on the system.


Subject:
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"



Body:
The body of the email is one of the lines:
   • 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 filename of the attachment is 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

The attachment is a copy of the malware itself.



The email may look like one of the following:


 Mailing Search addresses:
It searches the following file for email addresses:
   • %every *.htm file%

 Network Infection In order to ensure its propagation the malware attemps to connect to other machines as described below.

It drops a copy of itself to the following network share:
   • %all shared folders%


It uses the following login information in order to gain access to the remote machine:

– The following username:
   • Administrator

– The following list of passwords:
   • 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; !@&; 035;$%^&*; !@&; 035;$%^&;
      !@&; 035;$%^; !@&; 035;$%; asdfgh; asdf; !@&; 035;$; 1234; 111; root;
      abc123; 12345678; abcdefg; abcdef; abc; 888888; 666666; 111111; admin;
      administrator; guest; 654321; 123456; 321; 123



IP address generation:
It creates random IP addresses while it keeps the first two octets from its own address. Afterwards it tries to establish a connection with the created addresses.

 Process termination Processes with one of the following strings are terminated:
   • RISING; SKYNET; SYMANTEC; MCAFEE; GATE; RFW.EXE; RAVMON.EXE; KILL;
      NAV; DUBA; KAV


 Miscellaneous Network shares:
The following network share will be created:
   • %TEMPDIR%\


 File details Programming language:
 The malware program was written in MS Visual C++.


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
   • ASPack 2.11

Description inserted by Andrei Gherman on Monday, August 1, 2005
Description updated by Andrei Ivanes on Tuesday, March 14, 2006

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