Nume:Worm/Sohanat.AX
Descoperit pe data de:14/02/2007
Tip:Vierme
ITW:Da
Numar infectii raportate:Scazut
Potential de raspandire:Scazut
Potential de distrugere:Mediu
Fisier static:Da
Marime:185.542 Bytes
MD5:019491172aa082ca33a76793a651a09a
Versiune VDF:6.37.01.105
Versiune IVDF:6.37.01.106 - venerdì 16 febbraio 2007

 General Metoda de raspandire:
   • Messenger


Alias:
   •  F-Secure: IM-Worm.Win32.Sohanad.u
   •  Sophos: W32/Sohana-K
   •  Grisoft: Autoit.Y
   •  Eset: Win32/Sohanad.U


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


Efecte secundare:
   • Inchide aplicatiile de securitate
   • Descarca un fisier malware
   • Creeaza un fisier malware
   • Modificari in registri

 Fisiere Incearca sa descarce un fisier:

– Adresa este urmatoarea:
   • http://64.26.25.75/**********
Fisierul este stocat pe hard disc la: %WINDIR%\svchost.exe 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/VB.CK.9

 Registrii sistemului Urmatoarea cheie este adaugata in registri pentru a rula procesul la repornirea sistemului:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "SVCHOST"="%WINDIR%\svchost.exe"
   • "Task Manager"="%WINDIR%\svhost32.exe"



Urmatoarele chei sunt adaugate in registrii sistemului:

– [HKLM\SOFTWARE\Policies\Microsoft\Windows NT\SystemRestore]
   • "DisableConfig"="1"

– [HKCU\Software\Google\GoogleToolbarNotifier]
   • "KeepDS"=dword:00000000
   • "ShowTrayIcon"=dword:00000000

– [HKCU\Software\Yahoo\pager\View\YMSGR_Launchcast]
   • "content url"="http://zinblog.com"

– [HKCU\Software\Yahoo\pager\View\YMSGR_buzz]
   • "content url"="http://zinblog.com"

– [HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel]
   • "Homepage"=dword:00000001



Urmatoarele chei din registri sunt modificate:

Pagina de start in Internet Explorer:
– [HKCU\Software\Microsoft\Internet Explorer\Main]
   Noua valoare:
   • "Start Page"="http://zinblog.com"

– [HKCU\Software\Microsoft\Internet Explorer\Main]
   Noua valoare:
   • "Search Bar"="http://zinblog.com"
   • "Use Search Asst"="no"
   • "Search Page"="http://zinblog.com"

– [HKCU\Software\Microsoft\Internet Explorer\SearchUrl]
   Noua valoare:
   • "(Default)"="http://zinblog.com"

– [HKCU\Software\Microsoft\Search Assistant]
   Noua valoare:
   • "DefaultSearchURL"="http://zinblog.com"

Diverse setari in Explorer:
– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
   Noua valoare:
   • "NoRun"=dword:00000001

Dezactivarea programelor Regedit si Task Manager:
– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System]
   Noua valoare:
   • "DisableRegistryTools"=dword:00000001
   • "DisableTaskMgr"=dword:00000001

 Messenger – Yahoo Messenger
Toate intrarile din lista de contacte.


Mesaj
Mesajul transmis arata ca unul din urmatoarele:

   • This is my one-off Xmas e-card for you ^_^ http://zinblog.com/?id=ecard =)) This message was certified by %yahoo user%

   • making money online never be easier : http://unitedreporters.org/?id=tips >:D< This message was certified by %yahoo user%, no worm

   • Vote for our Miss beauty today !!! http://unitedreporters.org/?id=miss_world :x:x:x:x:x This message was certified by %yahoo user%, no worm

   • DIY dynamite from Whisky, Coke and Mentos : http://zinblog.com/?id=dynamite << This message was certified by %yahoo user%, no worm

   • Fuck !!! X-( http://zinblog.com/?id=password << This message was certified by %yahoo user%, no worm

   • I made 10 gifts for the first 10 people post comments on my own page : http://lucyblog.com ^_^

   • Be careful. There’ll be earthquake tonight !!! http://unitedreporters.org/?id=warning << This message was certified by %yahoo user%, no worm

   • My new personal website : http://zinblog.com c0ol !!!

   • Microsoft to release 2007 free-of-charge packs of Winsdows Vista for its first 2007 online registered users: http://unitedreporters.org/?id=ms << This message was certified by %yahoo user%, no worm

   • wtf is this ? wanna give me a shit ? http://unitedreporters.org/?id=news X-(

   • Breaking news : Osama Bin Laden has been arrested !! http://unitedreporters.org/?news_id=18388 This message was certified by %yahoo user%, no worm

   • Yahoo to charge fee for its YM service http://zinblog.com/?id=ym This message was certified by %yahoo user%, no worm

   • OMG ! She is really beautiful :x http://zinblog.com/DSC00273.JPG This message was certified by %yahoo user%, no worm

URL-ul trimte la o copie a malware-ului descris. Daca utilizatorul descarca si executa acest fisier, procesul de infectare porneste din nou.


Mesajele primite pot arata astfel:



 Detaliile fisierului Limbaj de programare:
 Limbaj de programare folosit: C (compilat cu Microsoft Visual C++).
Pentru a ingreuna detectia si a reduce marimea fisierului, este folosit urmatorul program de arhivare:
   • UPX

Descrizione inserita da Ernest Szocs su giovedì 15 febbraio 2007
Descrizione aggiornata da Ernest Szocs su lunedì 19 febbraio 2007

Indietro . . . .