How to Scan for Conficker Worm


A bit of an update to the conficker worm that is supposedly scheduled for new updates and instructions today wednesday 1st. April 2009 and that nobody except for the bad guys knows what those instructions would be. Fyodor has rolled out a new nmap beta release to the nmap scripting engine that enables it to check if a particular machine is possibly infected by the conficker worm.

Thanks to excellent research by Tillmann Werner and Felix Leder of The Honeynet Project and implementation work by Ron Bowes, David Fifield, Brandon Enright, and Fyodor, we’ve rolled out a new Nmap release which can remotely scan for and detect infected machines. Nmap 4.85BETA5 is now available from the download page, including official binaries for Windows and Mac OS X. To scan for Conficker, use a command such as:


A clean machine should report at the bottom: “Conficker: Likely CLEAN”, while likely infected machines say: “Conficker: Likely INFECTED”.

A useful feature to check your own network if any of your computers in the network is infected by the conficker worm.

Tenable security have also released a new Nessus plugin #36036

which performs a network based check for Windows computers infected with a variant of the Conficker virus. The scan does not need credentials, but does require ports 445 or 139 to be open between the Nessus scanner and your scanned systems. The plugin is based on research from the University of Bonn in Germany.

Conficker exploits Windows systems vulnerable to MS08-067. Tenable has worked with many organizations to help them perform both un-credentialed network scans and credentialed patch audits with Nessus to find systems that are still vulnerable.

Source: insecure.org and tenablesecurity.com.

Posted in: Countermeasures, Malware

, , , , , ,


Latest Posts:


Mosca - Manual Static Analysis Tool To Find Bugs Mosca – Manual Static Analysis Tool To Find Bugs
Mosca is a manual static analysis tool written in C designed to find bugs in the code before it is compiled, much like a grep unix command.
Slurp - Amazon AWS S3 Bucket Enumerator Slurp – Amazon AWS S3 Bucket Enumerator
Slurp is a blackbox/whitebox S3 bucket enumerator written in Go that can use a permutations list to scan externally or an AWS API to scan internally.
US Government Cyber Security Still Inadequate US Government Cyber Security Still Inadequate
Surprise, surprise, surprise - an internal audit of the US Government cyber security situation has uncovered widespread weaknesses, legacy systems and poor adoption of cyber controls and tooling.
BloodHound - Hacking Active Directory Trust Relationships BloodHound – Hacking Active Directory Trust Relationships
BloodHound is for hacking active directory trust relationships and it uses graph theory to reveal the hidden and often unintended relationships within an AD environment.
SecLists - Usernames, passwords, URLs, sensitive data patterns, fuzzing payloads, web shells SecLists – Usernames, passwords, URLs, sensitive data patterns, fuzzing payloads, web shells
SecLists is the security tester's companion. It's a collection of multiple types of lists used during security assessments, collected in one place.
DeepSound - Audio Steganography Tool DeepSound – Audio Steganography Tool
DeepSound is an audio steganography tool and audio converter that hides secret data into audio files, the application also enables you to extract from files.


Comments are closed.