Name: Worm/Brontok.Q.153 Entdeckt am: 14/08/2009 Art: Worm In freier Wildbahn: Ja Gemeldete Infektionen: Niedrig bis mittel Verbreitungspotenzial: Niedrig bis mittel Schadenspotenzial: Niedrig bis mittel Statische Datei: Ja Dateigröße: 43.476 Bytes MD5 Prüfsumme: a042ec98487ca36544b4281c80a1a4a2 IVDF Version: 7.01.05.117 - Freitag, 14. August 2009
General Aliases: • Mcafee: W32/Rontokbro.gen • Sophos: W32/Brontok-Gen • Panda: W32/Brontok.L.worm • Eset: Win32/Brontok.DJ • Bitdefender: Trojan.Generic.1934606 Betriebsysteme: • Windows 2000 • Windows XP • Windows 2003 Auswirkungen: • Lädt schädliche Dateien herunter • Erstellt schädliche Dateien • Setzt Sicherheitseinstellungen herunter • Änderung an der Registry Dateien Kopien seiner selbst werden hier erzeugt: • %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 Folgende Dateien werden überschreiben. – %SYSDIR% \drivers\etc\hosts – C:\autoexec.bat Die anfänglich ausgeführte Kopie der Malware wird gelöscht. Folgende Dateien werden gelöscht: • %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 Es werden folgende Dateien erstellt: – %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 Des weiteren wird sie ausgeführt nachdem sie vollständig erstellt wurde. Diese Batchdatei wird genutzt um eine Datei zu löschen. Es wird versucht die folgenden Dateien herunterzuladen: – Die URL ist folgende: • http://www.geocities.com/sbllma5/********** – Die URL ist folgende: • http://www.geocities.com/sbllma5/********** – Die URL ist folgende: • http://www.geocities.com/sbllma5/********** Es versucht folgende Dateien auszuführen: – Dateiname: • explorer.exe – Dateiname: • "%HOME%\Local Settings\Application Data\smss.exe" – Dateiname: • "%HOME%\Local Settings\Application Data\winlogon.exe" – Dateiname: • at /delete /y – Dateiname: • at 17:08 /every:M,T,W,Th,F,S,Su "%HOME%\Templates\Brengkolang.com" – Dateiname: • "%HOME%\Local Settings\Application Data\services.exe" – Dateiname: • "%HOME%\Local Settings\Application Data\lsass.exe" – Dateiname: • "%HOME%\Local Settings\Application Data\inetinfo.exe" – Dateiname: • cmd /c "%HOME%\Local Settings\Application Data\BronNetDomList.bat" – Dateiname: • ping kaskus.com -n 250 -l 747 Registry Die folgenden Registryschlüssel werden hinzugefügt um die Prozesse nach einem Neustart des Systems erneut zu starten. Folgende Registryschlüssel werden hinzugefügt: – [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}" Folgende Registryschlüssel werden geändert: – [HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot] Neuer Wert: • "AlternateShell"="cmd-brontok.exe" – [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] Neuer Wert: • "Shell"="Explorer.exe "%WINDIR% \KesenjanganSosial.exe"" – [HKCU\Software\Microsoft\Internet Explorer\Toolbar\Explorer] Neuer Wert: • "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] Neuer Wert: • "Hidden"=dword:0x00000000 • "HideFileExt"=dword:0x00000001 • "ShowSuperHidden"=dword:0x00000000 – [HKCU\Software\Microsoft\Internet Explorer\Toolbar] Neuer Wert: • "Locked"=dword:0x00000001 Hosts Die hosts Datei wird wie folgt geändert: – In diesem Fall werden die bestehenden Einträge gelöscht. Datei Einzelheiten Laufzeitpacker: Um eine Erkennung zu erschweren und die Größe der Datei zu reduzieren wurde sie mit einem Laufzeitpacker gepackt.
Die Beschreibung wurde erstellt von Petre Galan am Mittwoch, 23. Juni 2010 Die Beschreibung wurde geändert von Petre Galan am Mittwoch, 23. Juni 2010
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