Hier die aktualisierten Informationen zum neuen Wurm:
Informationen in deutscher Sprache:
Der entsprechende KnowledgeBase-Artikel:
http://support.microsoft.com/?scid=kb;de;823980
Was ist zu tun:
http://support.microsoft.com/default.aspx?scid=kb;de;826986
Und der Security-Bulletin von Microsoft im Original:
PSS Security Response Team Alert - New Virus: W32.Blaster.worm Update
SEVERITY: CRITICAL
DATE: August 12, 2003
PRODUCTS AFFECTED: Windows XP, Windows 2000, Windows Server 2003, Windows NT 4.0, NT 4.0 Terminal Services Edition
Update: PSS Security has updated the recovery procedures in this bulletin. Windows 9X operating systems are not affected by this virus.
**********************************************************************
PRODUCTS AFFECTED: Windows XP, Windows 2000, Windows Server 2003, Windows NT 4.0, NT 4.0 Terminal Services Edition
WHAT IS IT?
The Microsoft Product Support Services Security Team is issuing this alert to inform customers about a new worm named W32.Blaster.Worm which is spreading in the wild. This virus is also known as: W32/Lovsan.worm (McAfee), WORM_MSBLAST.A (Trendmicro), Win32.Posa.Worm (Computer Associates). Best practices, such as applying security patch MS03-026 should prevent infection from this worm.
Date discovered: August 11, 2003. Customers who had previously applied the security patch MS03-026 are protected. To deterimine if the virus is present on your machine see the technical details below.
IMPACT OF ATTACK:
Spread through open RPC ports. Customer's machine gets re-booted or the file "msblast.exe" exists on customer's system.
TECHNICAL DETAILS:
This worm scans a random IP range to look for vulnerable systems on TCP port 135. The worm attempts to exploit the DCOM RPC vulnerability patched by MS03-026.
Once the Exploit code is sent to a system, it downloads and executes the file MSBLAST.EXE from a remote system via TFTP. Once run, the worm creates the registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
"windows auto update" = msblast.exe I just want to say LOVE YOU SAN!! bill
Symptoms of the virus: Some customers may not notice any symptoms at all. A typical symptom is the system is rebooting every few minutes without user input. Customers may also see:
- Presence of unusual TFTP* files
- Presence of the file msblast.exe in the WINDOWS SYSTEM32 directory
To detect this virus, search for msblast.exe in the WINDOWS SYSTEM32 directory or download the latest anti-virus software signature from your anti-virus vendor and scan your machine.
For additional information on recovering from this attack please contact your preferred anti-virus vendor.
RECOVERY:
Security best practices suggest that previously compromised machines be wiped and rebuilt to eliminate any undiscovered exploits that can lead to a future compromise. See Cert Advisory:
Steps for Recovering from a UNIX or NT System Compromise. http://www.cert.org/tech_tips/win-UNIX-system_compromise.html
However, many Anti-Virus companies have written tools to remove the known exploit associated with this particular worm. To download the removal tool from your antivirus vendor follow procedures outlined below.
For Windows XP
1. First, enable the built in firewall such as Internet Connection Firewall (ICF) in Windows XP: http://support.microsoft.com/?id=283673
--In Control Panel, double-click "Networking and Internet Connections", and then click "Network Connections".
--Right-click the connection on which you would like to enable ICF, and then click "Properties".
--On the Advanced tab, click the box to select the option to "Protect my computer or network".
2. Second, download the MS03-026 security patch from Microsoft:
Windows XP (32 bit) http://download.microsoft.com/downl...e-b7a52a983f01/WindowsXP-KB823980-x86-ENU.exe
Windows XP (64 bit) http://download.microsoft.com/downl...-cfc7c5c67df5/WindowsXP-KB823980-ia64-ENU.exe
3. Third, install or update your antivirus signature software
4. Then, download the worm removal tool from your antivirus vendor.
For Windows 2000 systems, where Internet Connection Firewall (ICF) is not available, the following steps will help block the affected ports so that the system can be patched. These steps are based on a modified excerpt from the article; HOW TO: Configure TCP/IP Filtering in Windows 2000. http://support.microsoft.com/?id=309798
1. Configure TCP/IP security on Windows 2000:
--Select "Network and Dial-up Connections" in the control panel. --Right-click the interface you use to access the Internet, and then click "Properties". --In the "Components checked are used by this connection" box, click "Internet Protocol (TCP/IP)", and then click "Properties". --In the Internet Protocol (TCP/IP) Properties dialog box, click "Advanced". --Click the "Options" tab. --Click "TCP/IP filtering", and then click "Properties". --Select the "Enable TCP/IP Filtering (All adapters)" check box.
--There are three columns with the following labels:
TCP Ports
UDP Ports
IP Protocols
--In each column, you must select the "Permit Only" option.
--Click OK.
2. Download the MS03-026 security patch for Windows 2000 from Microsoft
at: http://download.microsoft.com/downl...b4b9d42049d5/Windows2000-KB823980-x86-ENU.exe
3. Install or update your antivirus signature software
4. Then, download the worm removal tool from your antivirus vendor.
For additional details on this worm from anti-virus software vendors participating in the Microsoft Virus Information Alliance (VIA) please visit the following links:
Network Associates:
http://us.mcafee.com/virusInfo/default.asp?id=description&virus_k=100547
Trend Micro: http://www.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=WORM_MSBLAST.A
Symantec: http://securityresponse.symantec.com/avcenter/venc/data/w32.blaster.worm.html
Computer Associates: http://www3.ca.com/virusinfo/virus.aspx?ID=36265
For more information on Microsoft's Virus Information Alliance please visit this link: http://www.microsoft.com/technet/security/virus/via.asp
As always, please make sure to use the latest Anti-Virus detection software signature from your Anti-Virus vendor to detect new viruses and their variants.
PREVENTION:
Turn on Internet Connection Firewall (Windows XP or Windows Server 2003) or use a third party firewall to block TCP ports 135, 139, 445 and 593; UDP port 135, 137,138; also UDP 69 (TFTP) and TCP 4444 for remote command shell.
To enable the Internet Connection Firewall in Windows: http://support.microsoft.com/?id=283673
-In Control Panel, double-click Networking and Internet Connections, and then click Network Connections.
-Right-click the connection on which you would like to enable ICF, and then click Properties.
-On the Advanced tab, click the box to select the option to "Protect my computer or network".
This worm utilizes a previously-announced vulnerability as part of its infection method. Because of this, customers must ensure that their computers are patched for the vulnerability that is identified in Microsoft Security Bulletin MS03-026. http://www.microsoft.com/technet/security/bulletin/MS03-026.asp.
Install the patch MS03-026 from Windows Update:
Windows NT 4 Server & Workstation http://download.microsoft.com/download/6/5/1/651c3333-4892-431f-ae93-bf8718d29e1a/Q823980i.EXE
Windows NT 4 Terminal Server Edition http://download.microsoft.com/download/4/6/c/46c9c414-19ea-4268-a430-53722188d489/Q823980i.EXE
Windows 2000 http://download.microsoft.com/downl...b4b9d42049d5/Windows2000-KB823980-x86-ENU.exe
Windows XP (32 bit) http://download.microsoft.com/downl...e-b7a52a983f01/WindowsXP-KB823980-x86-ENU.exe
Windows XP (64 bit) http://download.microsoft.com/downl...-cfc7c5c67df5/WindowsXP-KB823980-ia64-ENU.exe
Windows 2003 (32 bit) http://download.microsoft.com/downl...9390b9/WindowsServer2003-KB823980-x86-ENU.exe
Windows 2003 (64 bit) http://download.microsoft.com/downl...50425/WindowsServer2003-KB823980-ia64-ENU.exe
As always, please make sure to use the latest Anti-Virus detection from your Anti-Virus vendor to detect new viruses and their variants.
RELATED MICROSOFT SECURITY BULLETINS: http://www.microsoft.com/technet/security/bulletin/MS03-026.asp
RELATED KB ARTICLES: http://support.microsoft.com/?kbid=826955
This article will be available within 24 hours.
RELATED LINKS: http://www.microsoft.com/security/incident/blast.asp
If you have any questions regarding this alert please contact your Technical Account Manager or Application Development Consultant.
PSS Security Response Team
Informationen in deutscher Sprache:
Der entsprechende KnowledgeBase-Artikel:
http://support.microsoft.com/?scid=kb;de;823980
Was ist zu tun:
http://support.microsoft.com/default.aspx?scid=kb;de;826986
Und der Security-Bulletin von Microsoft im Original:
PSS Security Response Team Alert - New Virus: W32.Blaster.worm Update
SEVERITY: CRITICAL
DATE: August 12, 2003
PRODUCTS AFFECTED: Windows XP, Windows 2000, Windows Server 2003, Windows NT 4.0, NT 4.0 Terminal Services Edition
Update: PSS Security has updated the recovery procedures in this bulletin. Windows 9X operating systems are not affected by this virus.
**********************************************************************
PRODUCTS AFFECTED: Windows XP, Windows 2000, Windows Server 2003, Windows NT 4.0, NT 4.0 Terminal Services Edition
WHAT IS IT?
The Microsoft Product Support Services Security Team is issuing this alert to inform customers about a new worm named W32.Blaster.Worm which is spreading in the wild. This virus is also known as: W32/Lovsan.worm (McAfee), WORM_MSBLAST.A (Trendmicro), Win32.Posa.Worm (Computer Associates). Best practices, such as applying security patch MS03-026 should prevent infection from this worm.
Date discovered: August 11, 2003. Customers who had previously applied the security patch MS03-026 are protected. To deterimine if the virus is present on your machine see the technical details below.
IMPACT OF ATTACK:
Spread through open RPC ports. Customer's machine gets re-booted or the file "msblast.exe" exists on customer's system.
TECHNICAL DETAILS:
This worm scans a random IP range to look for vulnerable systems on TCP port 135. The worm attempts to exploit the DCOM RPC vulnerability patched by MS03-026.
Once the Exploit code is sent to a system, it downloads and executes the file MSBLAST.EXE from a remote system via TFTP. Once run, the worm creates the registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
"windows auto update" = msblast.exe I just want to say LOVE YOU SAN!! bill
Symptoms of the virus: Some customers may not notice any symptoms at all. A typical symptom is the system is rebooting every few minutes without user input. Customers may also see:
- Presence of unusual TFTP* files
- Presence of the file msblast.exe in the WINDOWS SYSTEM32 directory
To detect this virus, search for msblast.exe in the WINDOWS SYSTEM32 directory or download the latest anti-virus software signature from your anti-virus vendor and scan your machine.
For additional information on recovering from this attack please contact your preferred anti-virus vendor.
RECOVERY:
Security best practices suggest that previously compromised machines be wiped and rebuilt to eliminate any undiscovered exploits that can lead to a future compromise. See Cert Advisory:
Steps for Recovering from a UNIX or NT System Compromise. http://www.cert.org/tech_tips/win-UNIX-system_compromise.html
However, many Anti-Virus companies have written tools to remove the known exploit associated with this particular worm. To download the removal tool from your antivirus vendor follow procedures outlined below.
For Windows XP
1. First, enable the built in firewall such as Internet Connection Firewall (ICF) in Windows XP: http://support.microsoft.com/?id=283673
--In Control Panel, double-click "Networking and Internet Connections", and then click "Network Connections".
--Right-click the connection on which you would like to enable ICF, and then click "Properties".
--On the Advanced tab, click the box to select the option to "Protect my computer or network".
2. Second, download the MS03-026 security patch from Microsoft:
Windows XP (32 bit) http://download.microsoft.com/downl...e-b7a52a983f01/WindowsXP-KB823980-x86-ENU.exe
Windows XP (64 bit) http://download.microsoft.com/downl...-cfc7c5c67df5/WindowsXP-KB823980-ia64-ENU.exe
3. Third, install or update your antivirus signature software
4. Then, download the worm removal tool from your antivirus vendor.
For Windows 2000 systems, where Internet Connection Firewall (ICF) is not available, the following steps will help block the affected ports so that the system can be patched. These steps are based on a modified excerpt from the article; HOW TO: Configure TCP/IP Filtering in Windows 2000. http://support.microsoft.com/?id=309798
1. Configure TCP/IP security on Windows 2000:
--Select "Network and Dial-up Connections" in the control panel. --Right-click the interface you use to access the Internet, and then click "Properties". --In the "Components checked are used by this connection" box, click "Internet Protocol (TCP/IP)", and then click "Properties". --In the Internet Protocol (TCP/IP) Properties dialog box, click "Advanced". --Click the "Options" tab. --Click "TCP/IP filtering", and then click "Properties". --Select the "Enable TCP/IP Filtering (All adapters)" check box.
--There are three columns with the following labels:
TCP Ports
UDP Ports
IP Protocols
--In each column, you must select the "Permit Only" option.
--Click OK.
2. Download the MS03-026 security patch for Windows 2000 from Microsoft
at: http://download.microsoft.com/downl...b4b9d42049d5/Windows2000-KB823980-x86-ENU.exe
3. Install or update your antivirus signature software
4. Then, download the worm removal tool from your antivirus vendor.
For additional details on this worm from anti-virus software vendors participating in the Microsoft Virus Information Alliance (VIA) please visit the following links:
Network Associates:
http://us.mcafee.com/virusInfo/default.asp?id=description&virus_k=100547
Trend Micro: http://www.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=WORM_MSBLAST.A
Symantec: http://securityresponse.symantec.com/avcenter/venc/data/w32.blaster.worm.html
Computer Associates: http://www3.ca.com/virusinfo/virus.aspx?ID=36265
For more information on Microsoft's Virus Information Alliance please visit this link: http://www.microsoft.com/technet/security/virus/via.asp
As always, please make sure to use the latest Anti-Virus detection software signature from your Anti-Virus vendor to detect new viruses and their variants.
PREVENTION:
Turn on Internet Connection Firewall (Windows XP or Windows Server 2003) or use a third party firewall to block TCP ports 135, 139, 445 and 593; UDP port 135, 137,138; also UDP 69 (TFTP) and TCP 4444 for remote command shell.
To enable the Internet Connection Firewall in Windows: http://support.microsoft.com/?id=283673
-In Control Panel, double-click Networking and Internet Connections, and then click Network Connections.
-Right-click the connection on which you would like to enable ICF, and then click Properties.
-On the Advanced tab, click the box to select the option to "Protect my computer or network".
This worm utilizes a previously-announced vulnerability as part of its infection method. Because of this, customers must ensure that their computers are patched for the vulnerability that is identified in Microsoft Security Bulletin MS03-026. http://www.microsoft.com/technet/security/bulletin/MS03-026.asp.
Install the patch MS03-026 from Windows Update:
Windows NT 4 Server & Workstation http://download.microsoft.com/download/6/5/1/651c3333-4892-431f-ae93-bf8718d29e1a/Q823980i.EXE
Windows NT 4 Terminal Server Edition http://download.microsoft.com/download/4/6/c/46c9c414-19ea-4268-a430-53722188d489/Q823980i.EXE
Windows 2000 http://download.microsoft.com/downl...b4b9d42049d5/Windows2000-KB823980-x86-ENU.exe
Windows XP (32 bit) http://download.microsoft.com/downl...e-b7a52a983f01/WindowsXP-KB823980-x86-ENU.exe
Windows XP (64 bit) http://download.microsoft.com/downl...-cfc7c5c67df5/WindowsXP-KB823980-ia64-ENU.exe
Windows 2003 (32 bit) http://download.microsoft.com/downl...9390b9/WindowsServer2003-KB823980-x86-ENU.exe
Windows 2003 (64 bit) http://download.microsoft.com/downl...50425/WindowsServer2003-KB823980-ia64-ENU.exe
As always, please make sure to use the latest Anti-Virus detection from your Anti-Virus vendor to detect new viruses and their variants.
RELATED MICROSOFT SECURITY BULLETINS: http://www.microsoft.com/technet/security/bulletin/MS03-026.asp
RELATED KB ARTICLES: http://support.microsoft.com/?kbid=826955
This article will be available within 24 hours.
RELATED LINKS: http://www.microsoft.com/security/incident/blast.asp
If you have any questions regarding this alert please contact your Technical Account Manager or Application Development Consultant.
PSS Security Response Team
