New tool helps ransomware victims indentify the malware family

Posted by   Martijn Grooten on   Apr 15, 2016

Malware infections are never fun, but ransomware is particularly nasty and the plague doesn't seem likely to cease any time soon: new families are spotted almost daily.

A small silver lining in this dark cloud is the fact that crypto is hard for the bad guys too: they have made many mistakes implementing their encryption algorithms, and this has helped security researchers write tools that recover files encrypted by quite a few malware families.

Of course, the release of such tools — and especially blog posts that explain in full detail how the tools work gives the malware authors a heads up that they have made a mistake. At Botconf last year, Fox-IT researcher Yonathan Klijnsma, who maintains the Cryptowall Tracker, explained how the authors of Cryptowall hardened their encryption algorithm following public blog posts pointing out mistakes.

Moreover, for a not-so-tech-savvy victim, it isn't always easy to identify which ransomware is present on their system — a situation made worse by the fact that names and designs tend to be shared among multiple families.

Thankfully, there is now a solution for that. The people behind the MalwareHunterTeam have release the ID Ransomware tool, which allows anyone to upload a ransom note or an encrypted file and will then determine which of the more than 50 known ransomware families has encrypted the files.

Of course, there is no guarantee that there is a decryption tool available for the ransomware in question. The older families in particular tend to have crypto that can't be broken. But against this threat, every infected computer that we are able to decrypt is worth it.

locky_16mar.pngRansom note of the Locky ransomware. Found in March during our VBWeb research.



Latest posts:

VB2019 paper: APT cases exploiting vulnerabilities in region-specific software

At VB2019, JPCERT/CC's Shusei Tomonaga and Tomoaki Tani presented a paper on attacks that exploit vulnerabilities in software used only in Japan, using malware that is unique to Japan. Today we publish both their paper and the recording of their…

New paper: Detection of vulnerabilities in web applications by validating parameter integrity and data flow graphs

In a follow-up to a paper presented at VB2019, Prismo Systems researchers Abhishek Singh and Ramesh Mani detail algorithms that can be used to detect SQL injection in stored procedures, persistent cross-site scripting (XSS), and server‑side request…

VB2020 programme announced

VB is pleased to reveal the details of an interesting and diverse programme for VB2020, the 30th Virus Bulletin International Conference.

VB2019 paper: Cyber espionage in the Middle East: unravelling OSX.WindTail

At VB2019 in London, Jamf's Patrick Wardle analysed the WindTail macOS malware used by the WindShift APT group, active in the Middle East. Today we publish both Patrick's paper and the recording of his presentation.

VB2019 paper: 2,000 reactions to a malware attack – accidental study

At VB2019 cybercrime journalist and researcher Adam Haertlé presented an analysis of almost 2000 unsolicited responses sent by victims of a malicious email campaign. Today we publish both his paper and the recording of his presentation.

We have placed cookies on your device in order to improve the functionality of this site, as outlined in our cookies policy. However, you may delete and block all cookies from this site and your use of the site will be unaffected. By continuing to browse this site, you are agreeing to Virus Bulletin's use of data as outlined in our privacy policy.