PsiXBot: The Evolution Of A Modular .NET Bot Summary In this blog we will share our analysis of a modular piece of malware which is referred to by the author as PsiXBot. The malware first surfaced in 2017 but has recently undergone significant developments of its core and modules, which include the logging of keystrokes … Continue reading PsiXBot: The Evolution Of A Modular .NET Bot
Identifying Cobalt Strike team servers in the wild
How an anomalous space led to fingerprinting Summary On the 2nd of January 2019 Cobalt Strike version 3.13 was released, which contained a fix for an "extraneous space". This uncommon whitespace in its server responses represents one of the characteristics Fox-IT has been leveraging to identify Cobalt Strike Servers, with high confidence, for the past … Continue reading Identifying Cobalt Strike team servers in the wild
Your trust, our signature
Written and researched by Mark Bregman and Rindert Kramer Sending signed phishing emails Every organisation, whatever its size, will encounter phishing emails sooner or later. While the number of phishing attacks is increasing every day, the way in which phishing is used within a cyber-attack has not changed: an attacker comes up with a scenario … Continue reading Your trust, our signature
Phishing – Ask and ye shall receive
During penetration tests, our primary goal is to identify the difference in paths that can be used to obtain the goal(s) as agreed upon with our customers. This often succeeds due to insufficient hardening, lack of awareness or poor password hygiene. Sometimes we do get access to a resource, but do not have access to … Continue reading Phishing – Ask and ye shall receive
Bokbot: The (re)birth of a banker
This blogpost is a follow-up to a presentation with the same name, given at SecurityFest in Sweden by Alfred Klason. Summary Bokbot (aka: IcedID) came to Fox-IT’s attention around the end of May 2017 when we identified an unknown sample in our lab that appeared to be a banker. This sample was also provided by … Continue reading Bokbot: The (re)birth of a banker
Introducing Team Foundation Server decryption tool
During penetration tests we sometimes encounter servers running software that use sensitive information as part of the underlying process, such as Microsoft's Team Foundation Server (TFS). TFS can be used for developing code, version control and automatic deployment to target systems. This blogpost provides two tools to decrypt sensitive information that is stored in the TFS … Continue reading Introducing Team Foundation Server decryption tool
Introducing Orchestrator decryption tool
Researched and written by Donny Maasland and Rindert Kramer Introduction During penetration tests we sometimes encounter servers running software that use sensitive information as part of the underlying process, such as Microsoft's System Center Orchestrator. According to Microsoft, Orchestrator is a workflow management solution for data centers and can be used to automate the creation, … Continue reading Introducing Orchestrator decryption tool
