petitGarcon
28-04-2005, 14:17
Trojan.Hotword is a Trojan Horse program that logs keystrokes and opens a back door.
Type: Trojan Horse
Infection Length:483,328 bytes
Systems Affected:Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP
When Trojan.Hotword is executed, it performs the following actions: Creates the following files: %System% svchost.exe (A copy of the worm) %UserProfile%start menuProgramsstartuplogin.lnk (a shortcut that points to "%system% svchost.exe") %UserProfile%Application Datavzzpkghva.crb Notes: The space in the filename differentiates it from the legitimate "%System%svchost.exe". %System% is a variable that refers to the System folder. By default this is C:Windowssys tem(Windows 95/98/Me), C:WinntSystem32 (Windows NT/2000), or C:WindowsSystem32 (Windows XP). %UserProfile% is a variable that refers to the current user's profile folder. By default, this is C:Documents and Settings (Windows NT/2000/XP). Adds the value: "regedit" = ""%System% svchost.exe" ccRegVfy" to the registry subkey: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentV ersionRun Adds the value: "WU" = "%UserProfile%Application Datavzzpkghva.crb " to the registry subkey: HKEY_CURRENT_USERSOFTWAREMicrosoftWindows Adds the value: "File3" = "%System32%devmgmt.msc " to the registry subkey: HKEY_CURRENT_USERSOFTWAREMicrosoftMicrosoft ManagementRecent File List Adds the following folder to the registry: HKEY_CURRENT_USERSOFTWAREMicrosoftWindows NTCurrentVersionTask Manager Appends its configuration information to the file: %Windir%win.ini. Notes: This configuration information takes the form of a [WindowsSys32] section in the file. %Windir% is a variable that refers to the Windows installation folder. By default, this is C:Windows (Windows 95/98/Me/XP) or C:Winnt (Windows NT/2000). Starts logging keystrokes to %UserProfile%Application Datavzzpkghva.crb. Sends an email through an SMTP server at mail.targetdata.biz. The email contains configuration information about the Trojan and the compromised computer. Note: This server is not available at the time of writing. Attempts to contact an FTP server at ftp:/ ///ftp.[domain of infected computer]. Contacts an FTP server at ftp.targetdata.biz to send logged data and listens for instructions. Note: This server was not available at the time of writing. Receives instructions that may include: Creating screen captures Downloading and executing updates Downloading and executing files Sending emails Terminating processes Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices": Turn off and remove unneeded services. By default, many operating systems install auxiliary services that are not critical, such as an FTP server, telnet, and a Web server. These services are avenues of attack. If they are removed, blended threats have less avenues of attack and you have fewer services to maintain through patch updates. If a blended threat exploits one or more network services, disable, or block access to, those services until a patch is applied. Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services (for example, all Windows-based computers should have the current Service Pack installed.). Additionally, please apply any security updates that are mentioned in this writeup, in trusted Security Bulletins, or on vendor Web sites. Enforce a password policy. Complex passwords make it difficult to ***** password files on compromised computers. This helps to prevent or limit damage when a computer is compromised. Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files. Isolate infected computers quickly to prevent further compromising your organization. Perform a forensic analysis and restore the computers using trusted media. Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
Type: Trojan Horse
Infection Length:483,328 bytes
Systems Affected:Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP
When Trojan.Hotword is executed, it performs the following actions: Creates the following files: %System% svchost.exe (A copy of the worm) %UserProfile%start menuProgramsstartuplogin.lnk (a shortcut that points to "%system% svchost.exe") %UserProfile%Application Datavzzpkghva.crb Notes: The space in the filename differentiates it from the legitimate "%System%svchost.exe". %System% is a variable that refers to the System folder. By default this is C:Windowssys tem(Windows 95/98/Me), C:WinntSystem32 (Windows NT/2000), or C:WindowsSystem32 (Windows XP). %UserProfile% is a variable that refers to the current user's profile folder. By default, this is C:Documents and Settings (Windows NT/2000/XP). Adds the value: "regedit" = ""%System% svchost.exe" ccRegVfy" to the registry subkey: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentV ersionRun Adds the value: "WU" = "%UserProfile%Application Datavzzpkghva.crb " to the registry subkey: HKEY_CURRENT_USERSOFTWAREMicrosoftWindows Adds the value: "File3" = "%System32%devmgmt.msc " to the registry subkey: HKEY_CURRENT_USERSOFTWAREMicrosoftMicrosoft ManagementRecent File List Adds the following folder to the registry: HKEY_CURRENT_USERSOFTWAREMicrosoftWindows NTCurrentVersionTask Manager Appends its configuration information to the file: %Windir%win.ini. Notes: This configuration information takes the form of a [WindowsSys32] section in the file. %Windir% is a variable that refers to the Windows installation folder. By default, this is C:Windows (Windows 95/98/Me/XP) or C:Winnt (Windows NT/2000). Starts logging keystrokes to %UserProfile%Application Datavzzpkghva.crb. Sends an email through an SMTP server at mail.targetdata.biz. The email contains configuration information about the Trojan and the compromised computer. Note: This server is not available at the time of writing. Attempts to contact an FTP server at ftp:/ ///ftp.[domain of infected computer]. Contacts an FTP server at ftp.targetdata.biz to send logged data and listens for instructions. Note: This server was not available at the time of writing. Receives instructions that may include: Creating screen captures Downloading and executing updates Downloading and executing files Sending emails Terminating processes Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices": Turn off and remove unneeded services. By default, many operating systems install auxiliary services that are not critical, such as an FTP server, telnet, and a Web server. These services are avenues of attack. If they are removed, blended threats have less avenues of attack and you have fewer services to maintain through patch updates. If a blended threat exploits one or more network services, disable, or block access to, those services until a patch is applied. Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services (for example, all Windows-based computers should have the current Service Pack installed.). Additionally, please apply any security updates that are mentioned in this writeup, in trusted Security Bulletins, or on vendor Web sites. Enforce a password policy. Complex passwords make it difficult to ***** password files on compromised computers. This helps to prevent or limit damage when a computer is compromised. Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files. Isolate infected computers quickly to prevent further compromising your organization. Perform a forensic analysis and restore the computers using trusted media. Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.