ALS.Bursted.A

인쇄 가능 페이지

발견됨: December 10, 2003
업데이트됨: October 03, 2010 5:26:53 AM
다른 이름: AL/Bursted-G [Sophos]
유형: Virus

ALS.Bursted.A는 AutoCAD가 사용하는 AutoLisp 스크립팅 언어로 작성된 단순 바이러스입니다.

안티바이러스 보호 일자

  • Initial Rapid Release versionRapid Release 최초 버전 December 05, 2003
  • Rapid Release 최신 버전 April 06, 2018 리비전 039
  • Daily Certified 최초 버전 December 05, 2003
  • Daily Certified 최신 버전 April 08, 2018 리비전 003
  • Weekly Certified 최초 릴리스 날짜 December 10, 2003

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

발견됨: December 10, 2003
업데이트됨: October 03, 2010 5:26:53 AM
다른 이름: AL/Bursted-G [Sophos]
유형: Virus

ALS.Bursted.A는 AutoCAD AutoLisp 스크립팅 언어로 작성된 바이러스입니다. 이 바이러스는 AutoCAD 도면 파일(.dwg)과 동일한 디렉터리에 acad.lsp라는 텍스트 파일로 수신됩니다. 사용자가 이 도면 파일을 열면 AutoCAD가 acad.lsp 파일을 자동으로 로드하여 바이러스가 실행됩니다.

이 바이러스는 먼저 AutoCAD 검색 경로에서 base.dcl 파일을 찾아 읽습니다. 이 파일을 사용하여 AutoCAD Support 디렉터리에서 acad.lsp 파일을 찾습니다. 그런 다음 acad.lsp 파일을 읽고 "acadapp" 문자열이 있는지 검사합니다. 문자열이 없으면 acadapp.lsp로 자가 복제합니다. 바이러스에 있는 버그로 인해 이 검사는 항상 실패합니다.

그리고 도면 파일 이름이 Drawing.dwg(새 도면 파일의 기본 이름)인지 검사합니다. 이 검사가 실패하면 해당 폴더에 acad.lsp로 자가 복제합니다.

AutoCAD EXPLODE, XREF 및 XBIND 내부 명령의 정의를 취소합니다. 그리고 이들 이름으로 더미 명령을 정의합니다.

마지막으로 BURST라는 새 명령을 정의합니다. 이 명령이 실행되면 명령에 대한 설명이 중국어로 표시됩니다.

이 바이러스는 도면 파일을 손상시키거나 수정하지 않습니다.

권장 사항

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

  • Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
  • Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
  • Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
  • Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
  • Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
  • Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
  • If a 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.
  • Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
  • Isolate compromised computers quickly to prevent threats from spreading further. 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.
  • If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
  • For further information on the terms used in this document, please refer to the Security Response glossary.