Virus: Worm/Womble.D Date discovered: 12/09/2006 Type: Worm In the wild: Yes Reported Infections: Low to medium Distribution Potential: Medium to high Damage Potential: Medium Static file: Yes File size: 83.456 Bytes MD5 checksum: a7eed18c21897e50bbe167b8f438b9af VDF version: 6.35.01.212 IVDF version: 6.35.01.216 - Tuesday, September 12, 2006
General Methods of propagation: • Email • Local network Aliases: • Symantec: W32.Womble.A@mm • Mcafee: W32/Womble@MM • Kaspersky: Email-Worm.Win32.Womble.d • F-Secure: Email-Worm.Win32.Womble.d Platforms / OS: • Windows 98 • Windows 98 SE • Windows NT • Windows ME • Windows 2000 • Windows XP • Windows 2003 Side effects: • Downloads malicious files • Uses its own Email engine • Registry modification Files It copies itself to the following location: • %SYSDIR% \%random words% .exe It creates the following directories: • %HOME%\Local Settings\Application Data\Microsoft\WinTools\dvd_info • %HOME%\Local Settings\Application Data\Microsoft\WinTools\free • %HOME%\Local Settings\Application Data\Microsoft\WinTools\h_core • %HOME%\Local Settings\Application Data\Microsoft\WinTools\l_this • %HOME%\Local Settings\Application Data\Microsoft\WinTools\lunch • %HOME%\Local Settings\Application Data\Microsoft\WinTools\my_staff • %HOME%\Local Settings\Application Data\Microsoft\WinTools\new_mp3 • %HOME%\Local Settings\Application Data\Microsoft\WinTools\new_video • %HOME%\Local Settings\Application Data\Microsoft\WinTools\photo • %HOME%\Local Settings\Application Data\Microsoft\WinTools\sh_docs • %HOME%\Local Settings\Application Data\Microsoft\WinTools\take_it • %HOME%\Local Settings\Application Data\Microsoft\WinTools\video • %HOME%\Local Settings\Application Data\Microsoft\WinTools\xxx It drops copies of itself using a filename from lists – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\dvd_info Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\free Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\h_core Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\l_this Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\lunch Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\my_staff Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\new_mp3 Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\new_video Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\photo Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\sh_docs Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\take_it Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\video Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: %HOME%\Local Settings\Application Data\Microsoft\WinTools\xxx Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif – To: c:\system32\ Using one of the following names: • winupdate.exe • netupdate.exe • winlog.exe • winlogin.exe – To: %network shares% Using one of the following names: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse • .doc • .jpg • .txt • .exe • .pif It tries to download some files: – The location is the following: • support.365soft.info/current/********** This file may contain further download locations and might serve as source for new threats. – The location is the following: • support.365soft.info/current/********** This file may contain further download locations and might serve as source for new threats. – The location is the following: • support.365soft.info/current/********** This file may contain further download locations and might serve as source for new threats. Registry The following registry key is added in order to run the process after reboot: – [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] • windows_startup=%SYSDIR% \%random words% .exe The following registry keys are added: – [HKLM\SOFTWARE\WinUpdate] • "Version"=dword:00000004 – [HKLM\SOFTWARE\WinUpload] • "bot1.exe"=dword:00000002 • "bot2.exe"=dword:00000002 • "l.exe"=dword:00000002 • "t169.exe"=dword:00000002 – [HKCU\Software\Microsoft\WAB\WAB4] • "FirstRun"=dword:00000001 – [HKCU\Software\Microsoft\Windows\CurrentVersion] • "wmf.1.1"=dword:01c6db12 • "wmf.1.2"=dword:e8fc9740 The following registry keys are changed: – [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] Old value: • "Shell"="Explorer.exe" • "Userinit"="%SYSDIR% \userinit.exe" New value: • "Shell"="Explorer.exe%empty spaces% %SYSDIR% \%random words% .exe" • "Userinit"="%SYSDIR% \userinit.exe%empty spaces% ,%SYSDIR% \%random words% .exe" Email It contains an integrated SMTP engine in order to send emails. A direct connection with the destination server will be established. The characteristics are described in the following: From: The sender address is the user's Outlook account. To: – Email addresses found in specific files on the system. – Email addresses gathered from WAB (Windows Address Book) Subject: One of the following: • !!; Action Bush; FIFA; Helo; Hi; important; Incredible!!; info; Kiss; Laura; Laura and John; Lola; Look at this!!!; Miss Khan; Nataly; Ola; Olympus; Paula; pic; pics; private; private pics; Re:; Re: hi; Re:info; RE: pic; read this; Robert; Sex Body: The body of the email is the following: • Hi !!! %random character string% %random character string% -- Best Regards Attachment: The filenames of the attachments is constructed out of the following: – It starts with one of the following: • bush • Me • My passwords • MyWife • Seduction secrets • MySexMovie • MySexPicture • WallPaper • anna • Windows serial number • GoogleHack • OurNewCar • OurNewHouse Continued by one of the following: • .jpg • .doc • .txt Sometimes continued by one of the following: • .pif • .exe • .zip • .pif.zip • .exe.zip The attachment is a copy of the malware itself. The email may look like one of the following: Network Infection In order to ensure its propagation the malware attemps to connect to other machines as described below. Exploit: It makes use of the following Exploits: – MS04-011 (LSASS Vulnerability) – MS05-039 (Vulnerability in Plug and Play) Backdoor Contact server: All of the following: • support.365soft.info/current/********** • support.365soft.info/current/********** • support.software602.com/current/********** • support.software602.com/current/********** • anyproxy.net/current/********** • anyproxy.net/current/********** • support.enviroweb.org/current/********** • support.enviroweb.org/current/********** • support.nikontech.com/current/********** • support.nikontech.com/current/********** • mymail.100hotmail.com/current/********** • mymail.100hotmail.com/current/********** • server1.mymail.ph/current/********** • server1.mymail.ph/current/********** • mymail.bokee.com/current/********** • mymail.bokee.com/current/********** • mail.96520.org/current/********** • mail.96520.org/current/********** • 211.184.55.7/current/********** • 211.184.55.7/current/********** • update.snowsoft.co.kr/current/********** • update.snowsoft.co.kr/current/********** • update.wwwmail.org/current/********** • update.wwwmail.org/current/********** • update.mediaroz.com/current/********** • update.mediaroz.com/current/********** • update.co.tv/current/********** • update.co.tv/current/********** • www.3btasarim.com/current/********** • www.3btasarim.com/current/********** • baishui.info/current/********** • baishui.info/current/********** • jiji.2tw.info/current/********** • jiji.2tw.info/current/********** As a result it may send some information. This is done via the HTTP GET request on a PHP script. Sends information about: • Current malware status Stealing It tries to steal the following information: – Email account information obtained from the registry key: HKCU\Software\Microsoft\Internet Account Manager\Accounts Miscellaneous Internet connection: In order to check for its internet connection the following DNS servers are contacted: • *.GTLD-SERVERS.net • *.lan.tjhsst.edu Checks for an internet connection by contacting the following web site: • www.sun.com/index.html Mutex: It creates the following Mutex: • wmf.mtx.4 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 a runtime packer.
Description inserted by Adriana Popa on Friday, September 15, 2006 Description updated by Adriana Popa on Monday, September 18, 2006
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