WORM_DORKBOT.IH

This worm arrives via removable drives. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It drops copies of itself in all removable drives. It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

It connects to a website to send and receive information.

Arrival Details

This worm arrives via removable drives.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This worm drops the following copies of itself into the affected system:

• %User Profile%\Application Data\{random}.exe

(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.)

It injects threads into the following normal process(es):

• explorer.exe
• winlogon.exe

Autostart Technique

This worm adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random} = "%User Profile%\Application Data\{random}.exe"

Propagation

This worm drops copies of itself in all removable drives.

It drops an AUTORUN.INF file to automatically execute the copies it drops when a user accesses the drives of an affected system.

The said .INF file contains the following strings:

[AutoRun]
;{garbage characters}
shellexecute=RECYCLER\{malware file name}.exe
;{garbage characters}
icon=shell32.dll,7
;{garbage characters}
shell\open\command=RECYCLER\{malware file name}.exe
;{garbage characters}
action=Open folder to view files
;{garbage characters}
shell\explore\command=RECYCLER\{malware file name}.exe
;{garbage characters}
useautoplay=1

It sends copies of itself to target recipients using the following instant-messaging (IM) applications:

• mIRC
• Pidgin
• Windows Live Messenger
• Msn Messenger

Backdoor Routine

This worm connects to the following websites to send and receive information:

• gate.{BLOCKED}r.pl
• sp.{BLOCKED}p.kz

Other Details

This worm connects to the following URL(s) to get the affected system's IP address:

• http://api.wipmania.com/

NOTES:

It monitors the user's browsing activities. It gathers the user's login ID, password, and email when the site accessed by the user contains the following strings:

• *.moneybookers.*/*login.pl
• *1and1.com/xml/config*
• *4shared.com/login*
• *:2082/login*
• *:2083/login*
• *:2086/login*
• *:2222/CMD_LOGIN*
• *FLN-Password=*
• *LoginPassword=*
• *Passwd=*
• *Password=*
• *TextfieldPassword=*
• *alertpay.com/login*
• *aol.*/*login.psp*
• *bcointernacional*login*
• *bebo.*/c/home/ajax_post_lifestream_comment
• *bebo.*/c/profile/comment_post.json
• *bebo.*/mail/MailCompose.jsp*
• *bigstring.*/*index.php*
• *clave=*
• *depositfiles.*/*/login*
• *dotster.com/*login*
• *dyndns*/account*
• *enom.com/login*
• *facebook.*/ajax/*MessageComposerEndpoint.php*
• *facebook.*/ajax/chat/send.php*
• *facebook.*/login.php*
• *fastmail.*/mail/*
• *fileserv.com/login*
• *filesonic.com/*login*
• *freakshare.com/login*
• *friendster.*/rpc.php
• *friendster.*/sendmessage.php*
• *gmx.*/*FormLogin*
• *godaddy.com/login*
• *google.*/*ServiceLoginAuth*
• *hackforums.*/member.php
• *hotfile.com/login*
• *letitbit.net*
• *login.live.*/*post.srf*
• *login.yahoo.*/*login*
• *loginUserPassword=*
• *login_password=*
• *mediafire.com/*login*
• *megaupload.*/*login*
• *members*.iknowthatgirl*/members*
• *members.brazzers.com*
• *moniker.com/*Login*
• *namecheap.com/*login*
• *netflix.com/*ogin*
• *netload.in/index*
• *officebanking.cl/*login.asp*
• *oron.com/login*
• *paypal.*/webscr?cmd=_login-submit*
• *runescape*/*weblogin*
• *screenname.aol.*/login.psp*
• *secure.logmein.*/*logincheck*
• *sendspace.com/login*
• *service=youtube*
• *signin.ebay*SignIn
• *sms4file.com/*/signin-do*
• *speedyshare.com/login*
• *steampowered*/login*
• *thepiratebay.org/login*
• *torrentleech.org/*login*
• *twitter.*/*direct_messages/new*
• *twitter.*/*status*/update*
• *twitter.com/sessions
• *uploaded.to/*login*
• *uploading.com/*login*
• *vip-file.com/*/signin-do*
• *vkontakte.ru/api.php
• *vkontakte.ru/mail.php
• *vkontakte.ru/wall.php
• *webnames.ru/*user_login*
• *what.cd/login*
• *whcms*dologin*
• *youporn.*/login*

It attempts to steal user credentials used in the following websites:

• 1and1
• 4shared
• Alertpay
• Bcointernacional
• Bebo
• BigString
• Brazzers
• Clave
• Depositfiles
• Dotster
• DynDNS
• Ebay
• Email
• FLN-Password
• FLN-UserName
• Facebook
• Fastmail
• Fileserve
• Filesonic
• Freakshare
• Friendster
• Gmail
• Godaddy
• Hackforums
• Hotfile
• IKnowThatGirl
• Letitbit
• LogMeIn
• Mediafire
• Megaupload
• Message
• Moneybookers
• Moniker
• Namecheap
• Netflix
• Netload
• OfficeBanking
• Passwd
• PayPal
• Runescape
• Sendspace
• Sms4file
• Speedyshare
• Steam
• Thepiratebay
• Torrentleech
• Twitter
• Uploaded
• Uploading.com
• Vip-file
• Vkontakte
• Webnames
• Whatcd
• Yahoo
• YouPorn
• YouTube

It has the following backdoor capabilities:

• Block DNS
• Create processes
• Download other files
• Insert iframe tags into HTML files
• Join an IRC channel
• Log in to FTP sites
• Perfrom Slowloris, UDP, and SYN flooding
• Run Reverse Socks4 proxy server
• Steal login credentials
• Update Itself
• Visit a website

It may also prevent the user from using the following applications:

• cmd.exe
• ipconfig.exe
• regedit.exe
• regsvr32.exe
• rundll32.exe
• verclsid.exe

It drops a shortcut file named RECYCLER pointing to the copy of itself in removable drives.

It blocks users from accessing websites with the following strings:

• avira.
• avast.
• bitdefender.
• bullguard.
• clamav.
• comodo.
• emsisoft.
• eset.
• f-secure.
• fortinet.
• garyshood.
• gdatasoftware.
• heck.tc
• iseclab.
• jotti.
• kaspersky.
• lavasoft.
• malwarebytes.
• mcafee.
• norman.
• norton.
• novirusthanks.
• onecare.live.
• onlinemalwarescanner.
• pandasecurity.
• precisesecurity.
• sophos.
• sunbeltsoftware.
• symantec
• threatexpert.
• trendmicro.
• viruschief.
• virscan.
• virus.
• virusbuster.nprotect.
• virustotal.
• webroot.