Introduction The Netherlands was hit with a new spam run designed to spread a cryptolocker variant known as torrentlocker from Monday October 13th 2014 onwards. Please note that torrentlocker appears to present itself to victims as cryptolocker in all cases. Fox-IT now receives multiple reports of new victims in the Netherlands and we are currently … Continue reading New Torrentlocker variant active in the Netherlands
Author: Fox IT
Live blog on SSLv3 protocol vulnerability ‘POODLE’
Google has announced the discovery of a protocol vulnerability in SSLv3. This vulnerability allows an attacker to read contents of connections secured by SSLv3. SSLv3 is a Secure Sockets Layer (SSL) protocol that has been ratified in 1996. SSL is used to encrypt communications between clients and servers. It is usually integrated with webservers, mailservers or … Continue reading Live blog on SSLv3 protocol vulnerability ‘POODLE’
Update on DecryptCryptoLocker
A month ago Fox-IT and FireEye announced the DecryptCryptoLocker service, which provides free private keys to victims of the CryptoLocker Malware. We decided not only to share the information with victims for free, but also provide a website that provides the right key to victims, saving them a lot of time and effort. For each … Continue reading Update on DecryptCryptoLocker
CryptoLocker ransomware intelligence report
In the beginning of September 2013, the CryptoLocker malware variant appeared in the wild, spread exclusively by the infamous P2P ZeuS (aka Gameover ZeuS) malware. CryptoLocker had a simple purpose: to act as ransomware, encrypting important files such as images and documents, and then asking the victim for money to unlock the files. Image source: … Continue reading CryptoLocker ransomware intelligence report
OpenSSL ‘heartbleed’ bug live blog
A bug has been identified in OpenSSL, all details can be found at heartbleed.com. The bug has been assigned CVE-2014-0160. OpenSSL versions 1.0.1 – 1.0.1f are vulnerable. We advise to upgrade OpenSSL to version 1.0.1g or higher Test if you are vulnerable You can test if you are vulnerable by requesting a heartbeat response with … Continue reading OpenSSL ‘heartbleed’ bug live blog
Building Bowser – A password cracking story
At Fox-IT we perform a lot of penetration tests. Invariably we encounter hashed versions of passwords that need to be tested for strength. We suspected that with a relatively small investment most passwords could be cracked, regardless of their complexity. It turns out this is true for any password of 8 characters or less. This … Continue reading Building Bowser – A password cracking story
Tilon/SpyEye2 intelligence report
Tilon, son of Silon, or… SpyEye2 evolution of SpyEye? The malware family commonly known as Tilon has been around for several years now. While several public analysis reports have described the malware; no one has thus far linked it with the well-known SpyEye malware family. In light of the recent news of the guilty plea … Continue reading Tilon/SpyEye2 intelligence report
Malicious advertisements served via Yahoo
Detection of the infection Fox-IT operates the shared Security Operations Center service ProtACT. This service monitors the networks of our clients for malicious activity. On January 3 we detected and investigated the infection of clients after they visited yahoo.com. Infection Clients visiting yahoo.com received advertisements served by ads.yahoo.com. Some of the advertisements are malicious. Those … Continue reading Malicious advertisements served via Yahoo
Analysis of malicious advertisements on telegraaf.nl
Starting on Wed, 31 July 2013, 18:54:50 Fox-IT's monitoring system detected a redirect occurring on telegraaf.nl. It was another case of advertisement provider abuse. One of the advertisement providers loaded ads from an outside resource which returned an exploit kit named "FlimKit" exploit kit. After first being removed from telegraaf.nl a second exploit kit redirect … Continue reading Analysis of malicious advertisements on telegraaf.nl
Analysis of the KINS malware
The malware family KINS, thought to be new by researchers, has been used in private since at least December 2011 to attack financial institutions in Europe, specifically Germany and The Netherlands. It is fully based on the leaked ZeuS source code, with some minor additions. While the technical additions are interesting, they are far from … Continue reading Analysis of the KINS malware