Worm/Savage.a - Worm

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Statistici

Nume:	Worm/Savage.A
Descoperit pe data de:	01/09/2005
Tip:	Troian
Subtip:	Proxy
ITW:	Nu
Numar infectii raportate:	Scazut
Potential de raspandire:	Mediu
Potential de distrugere:	Scazut spre mediu
Fisier static:	Da
Marime:	118.784 Bytes
MD5:	219142cd277b6ecab905928c587e7af8
Versiune VDF:	6.31.0.190

General Metoda de raspandire:
   • Email

Alias:
   • Symantec: W32.Netsky.AL@mm
   • Mcafee: W32/Mytob.gen@MM
   • Kaspersky: Email-Worm.Win32.Savage.c
   • TrendMicro: WORM_SAVAGE.A
   • F-Secure: W32/Savage.B@mm
   • Bitdefender: Dropped:Trojan.Proxy.Daemonize.AW

Sistem de operare:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003

Efecte secundare:
   • Creeaza fisiere malware
   • Utilizeaza propriul motor de email
   • Modificari in registri

Dupa activare, ruleaza un program Windows care afiseaza urmatoarea fereastra:

Fisiere Se copiaza in urmatoarea locatie:
• %SYSDIR%\lsasrv.exe

Sunt create fisierele:

– %SYSDIR%\version.ini
– %SYSDIR%\iexplor.dll Analiza ulterioara a relevat ca si acest fisier este malware.
– %SYSDIR%\shlapiw.dll Analiza ulterioara a relevat ca si acest fisier este malware.
– %TEMPDIR%\Me^sa~e#4% Este deschis folosind aplicatia standard pentru acest tip de fisier.

Registrii sistemului Urmatoarele chei sunt adaugate in registri pentru a rula procesul la repornirea sistemului:

– HKLM\software\microsoft\windows\currentversion\run
• "lsass"="%SYSDIR%\lsasrv.exe"

– HKLM\software\microsoft\windows nt\currentversion\winlogon
• "Shell"="explorer.exe %SYSDIR%\lsasrv.exe"

Urmatoarele chei sunt adaugate in registrii sistemului:

– HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SSavage
– HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SSavage

Email Are un motor SMTP integrat. Va fi facuta o conexiune directa cu serverul destinatar. Iata caracteristicile lui:

De la:
Adrese generate. Va rugam nu presupuneti ca a fost intentia expeditorului sa va trimita acest email. Este posibil ca el sa nu stie ca este infectat sau chiar sa nu aiba sistemul infectat. In plus, este posibil sa primiti email-uri returnate care sa va indice ca sunteti infectat, lucru care poate fi de asemenea fals.

Catre:
– Adrese de email gasite pe sistem.
– Adrese de email obtinute din WAB (Windows Address Book)

Subiect:
Unul din urmatoarele:
   • "Status"
   • "Server Report"
   • "Mail Transaction Failed"
   • "Attention!!!"
   • "Mail Delivery System"
   • "hello"
   • "Do not reply to this email"
   • "Good day"

Corpul email-ului:
– Contine cod HTML.

Corpul email-ului este unul din textele:

   • Mail transaction failed. Partial message is available.

   • The message contains Unicode characters and has been sent as a binary attachment.

   • The message cannot be represented in 7-bit ASCII encoding and has been sent as a binary attachment.

   • Do not visit these sites!!!

   • You have visited illegal websites. I have a big list of the websites you surfed.

   • You think it's funny? You are stupid idiot!!! I'll send the attachment to your ISP and then I'll be watching how you will go to jail, punk!!!

   • Your credit card was charged for $500 USD. For additional information see the attachment

   • ESMTP [Secure Mail System 334]: Secure message is attached.

   • Encrypted message is available.

   • Delivered message is attached.

   • Can you confirm it?

   • Binary message is available.

   • am shocked about your document!

   • Are you a spammer? (I found your email on a spammer website!?!)

   • Attention! Your IP was logged by The Internet Fraud Complaint Center
     Your IP was logged by The Internet Fraud Complaint Center.
     There was a fraud attempt logged by The Internet Fraud Complaint Center from your IP.
     This is a serious crime, so all records was sent to the FBI.
     All information you can find in the attachment.
     Your IP was flagged and if there will be anover attemption you will be busted.

   • Attention! New self-spreading virus!
     Be careful, a new self-spreading virus called "RTSW.Smash" spreading very fast
     via e-mail and P2P networks. It's about two million people infected and it will be more.
     To avoid your infection by this virus and to stop it we provide you with full information
     how to protect yourself against it and also including free remover. Your can find it in the attachment.
     2004 Networks Associates Technology, Inc. All Rights Reserved

   • New terms and conditions for credit card holders
     Here a new terms and conditions for credit card holders using a credit cards
     for making purchase in the Internet in the attachment. Please, read it carefully.
     If you are not agree with new terms and conditions do not use your credit card in the World Wide Web.
     Thank you,
     The World Bank Group
     2004 The World Bank Group, All Rights Reserved

   • Thank you for registering at WORLDXXXPASS.COM
     All your payment info, login and password you can find in the attachment file.
     It's a real good choise to go to WORLDXXXPASS.COM

Atasament:
Numele fisierelor atasate este alcatuit dupa cum urmeaza:

– Incepe cu unul din urmatoarele:
   • "body"
   • "message"
   • "docs"
   • "data"
   • "file"
   • "rules"
   • "doc"
   • "readme"
   • "document"

    Extensia fisierului este una din urmatoarele:
   • "bat"
   • "cmd"
   • "exe"
   • "scr"
   • "pif"

Cateva exemple de nume al fisierului atasat:
   • readme.exe
   • message.scr

Atasamentul este o copie malware.

Email-ul poate arata ca unul din urmatoarele:

Email Cautare adrese:
Cauta adrese de email in urmatoarele fisiere:
   • "wab"; "adb"; "tbb"; "dbx"; "asp"; "edm"; "vbs"; "wml"; "jst"; "tpl";
      "con"; "vbp"; "csp"; "asm"; "asc"; "asa"; "dwt"; "lbi"; "rdf"; "rss";
      "xst"; "xsd"; "dlt"; "xml"; "jsp"; "inc"; "ssi"; "stm"; "xht"; "htc";
      "hta"; "cgi"; "php"; "sht"; "htm"; "txt"

Genereaza adrese pentru campul expeditorului:
Pentru a genera adrese foloseste urmatoarele texte:
   • "sandra"; "linda"; "julie"; "jimmy"; "jerry"; "helen"; "debby";
      "claudia"; "brenda"; "anna"; "alice"; "brent"; "adam"; "ted"; "fred";
      "jack"; "bill"; "stan"; "smith"; "steve"; "matt"; "dave"; "dan";
      "joe"; "jane"; "bob"; "robert"; "peter"; "tom"; "ray"; "mary"; "serg";
      "brian"; "jim"; "maria"; "leo"; "jose"; "andrew"; "sam"; "george";
      "david"; "kevin"; "mike"; "james"; "michael"; "alex"; "john";
      "accoun"; "certific"; "listserv"; "ntivi"; "support"; "admin"; "page";
      "the.bat"; "gold-certs"; "feste"; "submit"; "not"; "help"; "service";
      "privacy"; "somebody"; "soft"; "contact"; "rating"; "bugs"; "you";
      "your"; "someone"; "anyone"; "nothing"; "nobody"; "noone";
      "webmaster"; "postmaster"; "samples"; "info"; "root"

Domeniul este unul din urmatoarele:
   • "trendmicro.com"; "nai.com"; "networkassociates.com"; "mcaffe.com";
      "symantec.com"; "avp.com"; "compuserve.com"; "juno.com";
      "earthlink.net"; "yahoo.co.uk"; "hotmail.com"; "yahoo.com"; "msn.com";
      "aol.com"

Adrese evitate:
Nu trimite email-uri la adrese care contin unul din urmatoarele siruri de caractere:
   • "mozilla"; "utgers.ed"; "tanford.e"; "pgp"; "asketst"; "secur";
      "isc.o"; "isi.e"; "ripe."; "arin."; "sendmail"; "rfc-ed"; "ietf";
      "iana"; "usenet"; "fido"; "linux"; "kernel"; "google"; "ibm.com";
      "fsf."; "gnu"; "mit.e"; "bsd"; "math"; "unix"; "berkeley"; "foo.";
      ".mil"; "gov."; ".gov"; "ruslis"; "nodomai"; "mydomai"; "example";
      "inpris"; "borlan"; "sopho"; "panda"; "icrosoft"; "syma"; "avp";
      "-._!"; "-._!@"; "abuse"; "www"; "spam"; "spm"; ".edu"

Terminarea proceselor Procesele care contin urmatoarele siruri de caractere sunt oprite:
   • "i11r54n4"; "irun4"; "d3dupdate"; "rate"; "ssate"; "winsys"; "winupd";
      "SysMon"; "bbeagle"; "Penis32"; "teekids"; "MSBLAST"; "mscvb32";
      "sysinfo"; "PandaAVEngine"; "taskmon"; "wincfg32"; "outpost";
      "zonealarm"; "navapw32"; "navw32"; "zapro"; "msblast"; "netstat"

Alte informatii Sir de caractere:
In plus, mai contine urmatorul sir de caractere:
• -= Savage 0.0.1 04/17/2005 =-

Pentru o descriere scurta click aici.

Descriere introdusa de Sergiu Oprea la Thu, 01 Sep 2005 16:52 (GMT+1)
Descriere actualizata de Sergiu Oprea la Mon, 05 Sep 2005 09:34 (GMT+1)

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