Nome del virus: Worm/Brontok.Q.153 Scoperto: 14/08/2009 Tipo: Worm In circolazione (ITW): Si Numero delle infezioni segnalate: Medio-Basso Potenziale di propagazione: Medio-Basso Potenziale di danni: Medio-Basso File statico: Si Dimensione del file: 43.476 Byte Somma di controllo MD5: a042ec98487ca36544b4281c80a1a4a2 Versione IVDF: 7.01.05.117 - venerdì 14 agosto 2009
Generale Alias: • Mcafee: W32/Rontokbro.gen • Sophos: W32/Brontok-Gen • Panda: W32/Brontok.L.worm • Eset: Win32/Brontok.DJ • Bitdefender: Trojan.Generic.1934606 Piattaforme / Sistemi operativi: • Windows 2000 • Windows XP • Windows 2003 Effetti secondari: • Scarica file “maligni” • Duplica file “maligni” • Abbassa le impostazioni di sicurezza • Modifica del registro File Si copia alle seguenti posizioni: • %SYSDIR% \Administrator's Setting.scr • %HOME%\Local Settings\Application Data\smss.exe • %HOME%\Start Menu\Programs\Startup\Empty.pif • %HOME%\Templates\Brengkolang.com • %WINDIR% \KesenjanganSosial.exe • %WINDIR% \ShellNew\RakyatKelaparan.exe • %HOME%\Local Settings\Application Data\lsass.exe • %SYSDIR% \cmd-brontok.exe • %HOME%\Local Settings\Application Data\csrss.exe • %HOME%\Local Settings\Application Data\inetinfo.exe • %HOME%\Local Settings\Application Data\winlogon.exe • %HOME%\Local Settings\Application Data\services.exe • %SYSDIR% \drivers\etc\hosts-Denied By-Administrator.com Sovrascrive i seguenti file. – %SYSDIR% \drivers\etc\hosts – C:\autoexec.bat Cancella la copia di se stesso eseguita inizialmente. Cancella i seguenti file: • %HOME%\Local Settings\Application Data\BronFoldNetDomList.txt • %HOME%\Local Settings\Application Data\Update.15.Bron.Tok.bin • %HOME%\Local Settings\Application Data\BronNetDomList.bat • %HOME%\Local Settings\Application Data\BronNPath0.txt Vengono creati i seguenti file: – %HOME%\Local Settings\Application Data\BronNPath0.txt – %HOME%\Local Settings\Application Data\Kosong.Bron.Tok.txt – %HOME%\Local Settings\Application Data\ListHost15.txt – %HOME%\Local Settings\Application Data\BronFoldNetDomList.txt – %HOME%\Local Settings\Application Data\Update.15.Bron.Tok.bin – %HOME%\Local Settings\Application Data\Bron.tok.A15.em.bin – %HOME%\Local Settings\Application Data\BronNetDomList.bat Viene eseguito ulteriormente dopo che è stato completamente creato. Questo file automatico è utilizzato per cancellare un file. Prova a scaricare dei file: – La posizione è la seguente: • http://www.geocities.com/sbllma5/********** – La posizione è la seguente: • http://www.geocities.com/sbllma5/********** – La posizione è la seguente: • http://www.geocities.com/sbllma5/********** Prova ad eseguire i seguenti file: – Nome del file: • explorer.exe – Nome del file: • "%HOME%\Local Settings\Application Data\smss.exe" – Nome del file: • "%HOME%\Local Settings\Application Data\winlogon.exe" – Nome del file: • at /delete /y – Nome del file: • at 17:08 /every:M,T,W,Th,F,S,Su "%HOME%\Templates\Brengkolang.com" – Nome del file: • "%HOME%\Local Settings\Application Data\services.exe" – Nome del file: • "%HOME%\Local Settings\Application Data\lsass.exe" – Nome del file: • "%HOME%\Local Settings\Application Data\inetinfo.exe" – Nome del file: • cmd /c "%HOME%\Local Settings\Application Data\BronNetDomList.bat" – Nome del file: • ping kaskus.com -n 250 -l 747 Registro Le seguenti chiavi di registro vengono aggiunte per eseguire i processi dopo il riavvio: Vengono aggiunte le seguenti chiavi di registro: – [HKLM\SOFTWARE\Classes\Interface\ {27636B00-410F-11CF-B1FF-02608C9E7553}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {32FB6780-1ED0-11CF-A988-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {32FB6780-1ED0-11CF-A988-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] • "NoFolderOptions"=dword:0x00000001 – [HKLM\SOFTWARE\Classes\Interface\ {398B7DA0-4AAB-11CF-AE2C-00AA006EBFB9}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {3E37E320-17E2-11CF-ABC4-02608C9E7553}] • "@"="IADsUser" – [HKLM\SOFTWARE\Classes\Interface\ {72B945E0-253B-11CF-A988-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {46F14FDA-232B-11D1-A808-00C04FD8D5A8}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {32FB6780-1ED0-11CF-A988-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {370DF02E-F934-11D2-BA96-00C04FB6D0D1}] • "@"="IADsDNWithString" – [HKLM\SOFTWARE\Classes\Interface\ {27636B00-410F-11CF-B1FF-02608C9E7553}] • "@"="IADsGroup" – [HKLM\SOFTWARE\Classes\Interface\ {5BB11929-AFD1-11D2-9CB9-0000F87A369E}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {28B96BA0-B330-11CF-A9AD-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {001677D0-FD16-11CE-ABC4-02608C9E7553}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {34A05B20-4AAB-11CF-AE2C-00AA006EBFB9}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {27636B00-410F-11CF-B1FF-02608C9E7553}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {124BE5C0-156E-11CF-A986-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {05792C8E-941F-11D0-8529-00C04FD8D503}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {46F14FDA-232B-11D1-A808-00C04FD8D5A8}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {46F14FDA-232B-11D1-A808-00C04FD8D5A8}] • "@"="IADsObjectOptions" – [HKLM\SOFTWARE\Classes\Interface\ {451A0030-72EC-11CF-B03B-00AA006E0975}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {5D7B33F0-31CA-11CF-A98A-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {72B945E0-253B-11CF-A988-00AA006BC149}] • "@"="IADsCollection" – [HKLM\SOFTWARE\Classes\Interface\ {34A05B20-4AAB-11CF-AE2C-00AA006EBFB9}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {451A0030-72EC-11CF-B03B-00AA006E0975}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {00E4C220-FD16-11CE-ABC4-02608C9E7553}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {68AF66E0-31CA-11CF-A98A-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {34A05B20-4AAB-11CF-AE2C-00AA006EBFB9}] • "@"="IADsResource" – [HKLM\SOFTWARE\Classes\Interface\ {306E831C-5BC7-11D1-A3B8-00C04FB950DC}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {05792C8E-941F-11D0-8529-00C04FD8D503}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {5BB11929-AFD1-11D2-9CB9-0000F87A369E}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {05792C8E-941F-11D0-8529-00C04FD8D503}] • "@"="IADsPropertyEntry" – [HKLM\SOFTWARE\Classes\Interface\ {306E831C-5BC7-11D1-A3B8-00C04FB950DC}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {00E4C220-FD16-11CE-ABC4-02608C9E7553}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {28B96BA0-B330-11CF-A9AD-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {124BE5C0-156E-11CF-A986-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {3E37E320-17E2-11CF-ABC4-02608C9E7553}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {5D7B33F0-31CA-11CF-A98A-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {370DF02E-F934-11D2-BA96-00C04FB6D0D1}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {6C6D65DC-AFD1-11D2-9CB9-0000F87A369E}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {28B96BA0-B330-11CF-A9AD-00AA006BC149}] • "@"="IADsNamespaces" – [HKLM\SOFTWARE\Classes\Interface\ {6C6D65DC-AFD1-11D2-9CB9-0000F87A369E}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {05792C8E-941F-11D0-8529-00C04FD8D503}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {5D7B33F0-31CA-11CF-A98A-00AA006BC149}] • "@"="IADsServiceOperations" – [HKLM\SOFTWARE\Classes\Interface\ {6C6D65DC-AFD1-11D2-9CB9-0000F87A369E}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {27636B00-410F-11CF-B1FF-02608C9E7553}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {3E37E320-17E2-11CF-ABC4-02608C9E7553}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {32FB6780-1ED0-11CF-A988-00AA006BC149}] • "@"="IADsPrintJob" – [HKLM\SOFTWARE\Classes\Interface\ {68AF66E0-31CA-11CF-A98A-00AA006BC149}] • "@"="IADsService" – [HKLM\SOFTWARE\Classes\Interface\ {5BB11929-AFD1-11D2-9CB9-0000F87A369E}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {68AF66E0-31CA-11CF-A98A-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {398B7DA0-4AAB-11CF-AE2C-00AA006EBFB9}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {451A0030-72EC-11CF-B03B-00AA006E0975}] • "@"="IADsMembers" – [HKLM\SOFTWARE\Classes\Interface\ {370DF02E-F934-11D2-BA96-00C04FB6D0D1}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {72B945E0-253B-11CF-A988-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {124BE5C0-156E-11CF-A986-00AA006BC149}] • "@"="IADsPrintQueueOperations" – [HKLM\SOFTWARE\Classes\Interface\ {306E831C-5BC7-11D1-A3B8-00C04FB950DC}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {6C6D65DC-AFD1-11D2-9CB9-0000F87A369E}] • "@"="IADsWinNTSystemInfo" – [HKLM\SOFTWARE\Classes\Interface\ {124BE5C0-156E-11CF-A986-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKCU\software\microsoft\windows\currentversion\Policies\System] • "DisableCMD"=dword:0x00000000 • "DisableRegistryTools"=dword:0x00000000 – [HKLM\SOFTWARE\Classes\Interface\ {001677D0-FD16-11CE-ABC4-02608C9E7553}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {306E831C-5BC7-11D1-A3B8-00C04FB950DC}] • "@"="IADsPropertyValue2" – [HKLM\SOFTWARE\Classes\Interface\ {398B7DA0-4AAB-11CF-AE2C-00AA006EBFB9}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {00E4C220-FD16-11CE-ABC4-02608C9E7553}] • "@"="IADsDomain" – [HKLM\SOFTWARE\Classes\Interface\ {001677D0-FD16-11CE-ABC4-02608C9E7553}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {5BB11929-AFD1-11D2-9CB9-0000F87A369E}] • "@"="IADsADSystemInfo" – [HKLM\SOFTWARE\Classes\Interface\ {46F14FDA-232B-11D1-A808-00C04FD8D5A8}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {72B945E0-253B-11CF-A988-00AA006BC149}\ProxyStubClsid] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {5D7B33F0-31CA-11CF-A98A-00AA006BC149}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {451A0030-72EC-11CF-B03B-00AA006E0975}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {3E37E320-17E2-11CF-ABC4-02608C9E7553}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {00E4C220-FD16-11CE-ABC4-02608C9E7553}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {398B7DA0-4AAB-11CF-AE2C-00AA006EBFB9}] • "@"="IADsSession" – [HKLM\SOFTWARE\Classes\Interface\ {001677D0-FD16-11CE-ABC4-02608C9E7553}] • "@"="IADsContainer" – [HKLM\SOFTWARE\Classes\Interface\ {28B96BA0-B330-11CF-A9AD-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {370DF02E-F934-11D2-BA96-00C04FB6D0D1}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" – [HKLM\SOFTWARE\Classes\Interface\ {68AF66E0-31CA-11CF-A98A-00AA006BC149}\TypeLib] • "@"="{97D25DB0-0363-11CF-ABC4-02608C9E7553}" • "Version"="1.0" – [HKLM\SOFTWARE\Classes\Interface\ {34A05B20-4AAB-11CF-AE2C-00AA006EBFB9}\ProxyStubClsid32] • "@"="{00020424-0000-0000-C000-000000000046}" Vengono cambiate le seguenti chiavi di registro: – [HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot] Nuovo valore: • "AlternateShell"="cmd-brontok.exe" – [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] Nuovo valore: • "Shell"="Explorer.exe "%WINDIR% \KesenjanganSosial.exe"" – [HKCU\Software\Microsoft\Internet Explorer\Toolbar\Explorer] Nuovo valore: • "ITBarLayout"=hex:11,00,00,00,4C,00,00,00,00,00,00,00,34,00,00,00,1B,00,00,00,4E,00,00,00,01,00,00,00,20,07,00,00,A0,0F,00,00,05,00,00,00,62,05,00,00,26,00,00,00,02,00,00,00,21,07,00,00,A0,0F,00,00,04,00,00,00,21,01,00,00,A0,0F,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 – [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced] Nuovo valore: • "Hidden"=dword:0x00000000 • "HideFileExt"=dword:0x00000001 • "ShowSuperHidden"=dword:0x00000000 – [HKCU\Software\Microsoft\Internet Explorer\Toolbar] Nuovo valore: • "Locked"=dword:0x00000001 Host L'host del file viene modificato come spiegato: – In questo caso i dati immessi già esistenti vengono cancellati. Dettagli del file Software di compressione: Per complicarne l'individuazione e ridurre la dimensione del file, viene compresso con un software di compressione.
Descrizione inserita da Petre Galan su mercoledì 23 giugno 2010 Descrizione aggiornata da Petre Galan su mercoledì 23 giugno 2010
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