Security Experts:

Connect with us

Hi, what are you looking for?


Malware & Threats Launches Free Malware Repository

A newly launched service from aims to make it easy for the community to share known malware samples and access additional intelligence on them. 

A newly launched service from aims to make it easy for the community to share known malware samples and access additional intelligence on them. 

Called MalwareBazaar, the service is provided for free for both commercial and non-commercial usage, and only collects known malware samples, which are then shared with the community. Only vetted malware samples are accepted, but not adware or potentially unwanted applications (PUA/PUP).

Using the service, anyone can download as many malware samples as they like, search for samples by malware family name, fuzzy hashing and tags, and access additional information about malware samples distributed via email by using spamtrap data. 

An extensive API for automation is also provided, along with support for the export of hashes, and daily malware batches available for download. 

The need for MalwareBazaar, the founder says, emerged from the fact that publicly available open source intelligence (OSINT), despite being a great resource for threat intelligence, doesn’t always allow researchers to also download referenced malware samples to perform their own analysis. 

“You need to register on gazillion different online anti-virus scanning engines, sandboxes or malware databases in order to finally obtain the malware sample you need for your analysis,” notes. 

Furthermore, researchers often find that some of the available platforms come with restrictions regarding the number of malware samples one can download daily, while others are available for paying users only. 

“This was the motivation for launching MalwareBazaar: A malware corpus where IT-security researchers can easily share malware samples with the community without hitting download restrictions all the time or having to pay expensive subscription fees,” explains. 

Unlike VirusTotal, MalwareBazaar does not feature a multi anti-virus scanner, but allows anyone to download submitted samples, for free (VirusTotal makes submitted files available to paying customers only). 

Furthermore, with only one third of the files uploaded to VirusTotal detected by at least one AV-engine, the remaining two thirds are likely benign files. MalwareBazaar, on the other hand, does not accept benign files. 

Related: New Project Informs Security Teams of Phished Users

Related: Community Project Crushes 100,000 Malware Sites in 10 Months

Related: Chronicle Unveils VirusTotal Enterprise

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join this webinar to learn best practices that organizations can use to improve both their resilience to new threats and their response times to incidents.


Join this live webinar as we explore the potential security threats that can arise when third parties are granted access to a sensitive data or systems.


Expert Insights

Related Content


The changing nature of what we still generally call ransomware will continue through 2023, driven by three primary conditions.


No one combatting cybercrime knows everything, but everyone in the battle has some intelligence to contribute to the larger knowledge base.


A recently disclosed vBulletin vulnerability, which had a zero-day status for roughly two days last week, was exploited in a hacker attack targeting the...

Malware & Threats

Threat actors are increasingly abusing Microsoft OneNote documents to deliver malware in both targeted and spray-and-pray campaigns.

Malware & Threats

Microsoft plans to improve the protection of Office users by blocking XLL add-ins from the internet.


More than 3,800 servers around the world have been compromised in recent ESXiArgs ransomware attacks, which also include an improved process.

Malware & Threats

Unpatched and unprotected VMware ESXi servers worldwide have been targeted in a ransomware attack exploiting a vulnerability patched in 2021.

Malware & Threats

A vulnerability affecting IBM’s Aspera Faspex file transfer solution, tracked as CVE-2022-47986, has been exploited in attacks.