Skip to main content
Skip to main content
Microsoft Security Intelligence
Cart 0 items in shopping cart
Sign in
Published Jun 05, 2011 | Updated Sep 15, 2017

Backdoor:MSIL/Pontoeb.G

Detected by Microsoft Defender Antivirus

Aliases: Worm/Win32.Arcdoor (AhnLab) W32/Trojan2.NFSU (Command) Worm.MSIL.Arcdoor.ae (Kaspersky) W32/Smallworm.AKWT (Norman) Worm/Msil (AVG) Worm/MSIL.Arcdo.aea (Avira) MSIL/Arcdoor.AE worm (ESET) Worm.MSIL (Ikarus) Mal/MSIL-BA (Sophos)

Summary

Backdoor:MSIL/Pontoeb.G is a worm that can log your keystrokes and allow an attacker to remotely access your computer. It spreads through peer-to-peer (P2P) networks, network shares, mapped drives, removable drives, and compressed archived files.

It also attempts to steal sensitive and confidential information from affected users to perpetrate fraud. If you believe that your personal financial information may have been compromised, please refer to the following advisory for additional advice:

The malware may steal your information by recording your usernames and passwords. After removal of the threat you should change your passwords. Please refer to the following advisory for tips on how to create and use passwords:

To detect and remove this threat and other malicious software that may be installed on your computer, run a full-system scan with an appropriate, up-to-date, security solution. The following Microsoft products detect and remove this threat:

This malware attempts to steal sensitive and confidential information from affected users to perpetrate fraud. If you believe that your personal financial information may have been compromised, please refer to the following advisory for additional advice:

It may steal your information by recording your usernames and passwords. After removal of the threat you should change your passwords. Please refer to the following advisory for tips on how to create and use passwords:

Recovering from recurring infections on a network

The following additional steps may need to be taken to completely remove this threat from an infected network, and to stop infections from recurring from this and other similar types of network-spreading malware:

  1. Ensure that an antivirus product is installed on ALL computers connected to the network that can access or host shares.
  2. Ensure that all available network shares are scanned with an up-to-date antivirus product.
  3. Restrict permissions as appropriate for network shares on your network. For more information on simple access control, please see: http://technet.microsoft.com/library/bb456977.aspx.
  4. Remove any unnecessary network shares or mapped drives.

Note: Additionally it may be necessary to temporarily change the permission on network shares to read-only until the disinfection process is complete.

Disable Autorun functionality

This malware attempts to spread via removable drives on computers that support Autorun functionality. This is a particularly common method of spreading for many current malware families. For information on disabling Autorun functionality, please see the following article:
http://support.microsoft.com/kb/967715/

Additional remediation instructions for this malware

This malware may make lasting changes to a computer's configuration that are NOT restored by detecting and removing this threat. For more information on returning an infected computer to its pre-infected state, please see the following articles:

Follow us