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Virus:TR/Dldr.Scar.D
Date discovered:29/06/2011
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Medium to high
Damage Potential:Medium
File size:188.416 Bytes
MD5 checksum:1BF5CFFD41DEE4386A82D4A98DBDDE56
VDF version:7.11.10.144 - Wednesday, June 29, 2011
IVDF version:7.11.10.144 - Wednesday, June 29, 2011

 General Methods of propagation:
   • By visiting infected websites
   • Messenger


Aliases:
   •  Symantec: W32.IRCBot.NG
   •  TrendMicro: WORM_DORKBOT.WP
   •  Microsoft: Worm:Win32/Dorkbot.A


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003
   • Windows Vista
   • Windows 7


Side effects:
   • Third party control
   • Downloads files
   • Drops files
   • Registry modification
   • Steals information

 Files It deletes the initially executed copy of itself.



The following file is created:

– %APPDATA%\%random character string%.exe Further investigation pointed out that this file is malware, too.

 Registry One of the following values is added in order to run the process after reboot:

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "%random character string%"="%APPDATA%\%random character string%.exe"



The following registry key is changed:

Lower security settings from Internet Explorer:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
   New value:
   • "MigrateProxy"=dword:00000001
   • "ProxyEnable"=dword:00000000
   • "ProxyServer"=-
   • "ProxyOverride"=-
   • "AutoConfigURL"=-

 Messenger It is spreading via Messenger. The characteristics are described below:

– Windows Live Messenger

 IRC  Server: **********shannen.cc
Port: 4949
Server password: ngrBot
Nickname: %random character string%

Server: **********0days.in
Server password: ngrBot
Nickname: %random character string%

Server: **********a7aneek.net
Port: 5900
Server password: ngrBot
Nickname: %random character string%

Server: **********honeycat.org
Server password: ngrBot
Nickname: %random character string%

Server: **********masrawy.in
Server password: ngrBot
Nickname: %random character string%

Server: **********scorevidic.net
Server password: ngrBot
Nickname: %random character string%



– This malware has the ability to collect and send information such as:
    • Username
    • Information about the Windows operating system


– Furthermore it has the ability to perform actions such as:
    • connect to IRC server
    • disconnect from IRC server
    • Join IRC channel
    • Leave IRC channel
    • Perform DDoS attack

 Backdoor Contact server:
All of the following:
   • **********a7aneek.net:3211
   • **********a7aneek.net:3212
   • **********a7aneek.net:80
   • **********ka22.fileave.com:80

As a result it may send information and remote control could be provided.

Sends information about:
    • visited URLs
    • Information about the Windows operating system


Remote control capabilities:
    • Perform DDoS attack
    • Visit a website

 Stealing – It uses a network sniffer that checks for the following strings:
   • *&password=*; *&txtPassword=*; *.moneybookers.*/*login.pl;
      *1and1.com/xml/config*; *4shared.com/login*; *:2082/login*;
      *:2083/login*; *:2086/login*; *:2222/CMD_LOGIN*; *alertpay.com/login*;
      *aol.*/*login.psp*; *bcointernacional*login*;
      *bigstring.*/*index.php*; *clave=*; *depositfiles.*/*/login*;
      *dotster.com/*login*; *dyndns*/account*; *enom.com/login*;
      *facebook.*/login.php*; *fastmail.*/mail/*; *fileserv.com/login*;
      *filesonic.com/*login*; *FLN-Password=*; *freakshare.com/login*;
      *gmx.*/*FormLogin*; *godaddy.com/login*; *google.*/*ServiceLoginAuth*;
      *hackforums.*/member.php; *hotfile.com/login*; *letitbit.net*;
      *login.live.*/*post.srf*; *login.Pass=*; *login.yahoo.*/*login*;
      *LoginPassword=*; *loginUserPassword=*; *login_pass=*;
      *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*; *no-ip*/login*; *officebanking.cl/*login.asp*;
      *oron.com/login*; *pas=*; *pass=*; *passwd=*; *Passwd=*; *Password=*;
      *password=*; *password]=*; *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*; *TextfieldPassword=*;
      *thepiratebay.org/login*; *torrentleech.org/*login*;
      *twitter.com/sessions; *txtpass=*; *uploaded.to/*login*;
      *uploading.com/*login*; *vip-file.com/*/signin-do*;
      *webnames.ru/*user_login*; *what.cd/login*; *whcms*dologin*;
      *youporn.*/login*; 1and1; 4shared; Alertpay; AOL; Bcointernacional;
      BigString; Brazzers; clave; Depositfiles; Dotster; DynDNS; eBay;
      email; Email; EmailName; Enom; Facebook; Fastmail; Fileserve;
      Filesonic; FLN-Password; FLN-UserName; Freakshare; Gmail; GMX;
      Godaddy; Hackforums; Hotfile; IKnowThatGirl; Letitbit; Live; log;
      login; login.Pass; login.User; loginid; loginId; loginname;
      LoginPassword; LoginUserName; loginUserName; loginUserPassword;
      login[password]; login[username]; login_email; login_pass;
      login_password; LogMeIn; Mediafire; Megaupload; Moneybookers; Moniker;
      Namecheap; Netflix; Netload; NoIP; numeroTarjeta; OfficeBanking; Oron;
      pas; pass; passwd; Passwd; password; Password; PayPal; quick_password;
      quick_username; Runescape; rut; screenname; Sendspace;
      session[password]; session[username_or_email]; Sms4file; Speedyshare;
      Steam; TextfieldEmail; TextfieldPassword; Thepiratebay; token;
      Torrentleech; Twitter; txtEmail; txtpass; txtPassword; txtuser;
      Uploaded; Uploading; user; userid; username; Vip-file; Webnames;
      Whatcd; Yahoo; YouPorn; YouTube

 Injection – It injects itself as a remote thread into processes.

    All of the following processes:
   • explorer.exe; alg.exe; csrss.exe; services.exe; smss.exe; spoolsv.exe;
      svchost.exe; svchost.exe; svchost.exe; svchost.exe; svchost.exe;
      winlogon.exe; wuauclt.exe



Purpose:
Access to the following websites is effectively blocked:
   • *avast*; *avg*; *avira*; *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*; *virscan*; *virus*;
      *virusbuster*nprotect*; *viruschief*; *virustotal*; *webroot*


 Miscellaneous Accesses internet resources:
   • rapidshare.com:443
   • server.buy-host.com:443
   • http://api.wipmania.com/

Description inserted by Andrei Ilie on Wednesday, August 10, 2011
Description updated by Andrei Ilie on Wednesday, August 10, 2011

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