Need help? Ask the community or hire an expert.
Go to Avira Answers
Nume:TR/Dldr.Stration.F
Descoperit pe data de:20/11/2006
Tip:Troian
Subtip:Downloader
ITW:Da
Numar infectii raportate:Ridicat
Potential de raspandire:Scazut
Potential de distrugere:Scazut spre mediu
Fisier static:Nu
Marime:~32.000 Bytes
Versiune VDF:6.36.01.54
Versiune IVDF:6.36.01.57 - luni, 20 noiembrie 2006

 General Metoda de raspandire:
   • Nu are rutina proprie de raspandire


Alias:
   •  Kaspersky: Email-Worm.Win32.Warezov.ev
   •  F-Secure: Email-Worm.Win32.Warezov.ev


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


Efecte secundare:
   • Descarca un fisier malware


Imediat dupa lansarea in executie, pe ecran este afisat:



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


 Fisiere Se copiaza in urmatoarea locatie:
   • %SYSDIR%\%combinatie de caractere aleatoare%.exe



Este creat fisierul:

– Fisier inofensiv:
   • %directorul de activare malware%\%combinatie de caractere
      aleatoare%
.tmp




Incearca sa descarce un fisier:

– Adresa este urmatoarea:
   • http://www6.rasetikuinyunhderunsa.com/859/**********
Fisierul este stocat pe hard disc la: %TEMPDIR%\~%numar%.tmp In plus, acest fisier este executat dupa ce este descarcat de pe Internet. Analiza ulterioara a relevat ca si acest fisier este malware. Detectat ca: Worm/Stration.F

 Email Nu are rutina proprie de propagare, dar a fost raspandit prin e-mail. Iata caracteristicile lui:


De la:
Adresa este falsificata.


Formatul email-ului:
 


De la: sec@%domeniul destinatarului%
Subiect: Mail server report.
Corp mesaj:
   • Mail server report.
     Our firewall determined the e-mails containing worm copies are being sent from your computer.
     Nowadays it happens from many computers, because this is a new virus type (Network Worms).
     Using the new bug in the Windows, these viruses infect the computer unnoticeably.
     After the penetrating into the computer the virus harvests all the e-mail addresses and sends the copies of itself to these e-mail addresses
     Please install updates for worm elimination and your computer restoring.
     Best regards,
     Customers support service
Atasamente:
   • Update-KB%numar%-x86.exe
   • Update-KB%numar%-x86.zip
 


De la: secur@%domeniul destinatarului%
Subiect: Mail server report.
Corp mesaj:
   • Mail server report.
     Our firewall determined the e-mails containing worm copies are being sent from your computer.
     Nowadays it happens from many computers, because this is a new virus type (Network Worms).
     Using the new bug in the Windows, these viruses infect the computer unnoticeably.
     After the penetrating into the computer the virus harvests all the e-mail addresses and sends the copies of itself to these e-mail addresses
     Please install updates for worm elimination and your computer restoring.
     Best regards,
     Customers support service
Atasamente:
   • Update-KB%numar%-x86.exe
   • Update-KB%numar%-x86.zip
 


De la: serv@%domeniul destinatarului%
Subiect: Mail server report.
Corp mesaj:
   • Mail server report.
     Our firewall determined the e-mails containing worm copies are being sent from your computer.
     Nowadays it happens from many computers, because this is a new virus type (Network Worms).
     Using the new bug in the Windows, these viruses infect the computer unnoticeably.
     After the penetrating into the computer the virus harvests all the e-mail addresses and sends the copies of itself to these e-mail addresses
     Please install updates for worm elimination and your computer restoring.
     Best regards,
     Customers support service
Atasamente:
   • Update-KB%numar%-x86.exe
   • Update-KB%numar%-x86.zip


Subiect:
Unul din urmatoarele:
   • Error
   • Good day
   • hello
   • Mail Delivery System
   • Mail Transaction Failed
   • picture
   • Server Report
   • Status
   • test



Corpul email-ului:
Corpul email-ului este unul din textele:
   • Mail transaction failed. Partial message is available.
   • The message cannot be represented in 7-bit ASCII encoding and has been sent as a binary attachment
   • The message contains Unicode characters and has been sent as a binary attachment


Atasament:
Numele fisierului atasat este alcatuit dupa cum urmeaza:

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

    Urmat uneori de una din urmatoarele extensii false:
   • dat
   • elm
   • log
   • msg
   • txt

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



Email-ul poate arata ca unul din urmatoarele:




 Detaliile fisierului Compresia fisierului:
Pentru a ingreuna detectia si a reduce marimea fisierului, este folosit un program de compresie runtime.

Description inserted by Andrei Gherman on Monday, November 20, 2006
Description updated by Andrei Gherman on Monday, November 20, 2006

Back . . . .