CISA and Partners Release Advisory on RansomHub Ransomware

Today, CISA—in partnership with the Federal Bureau of Investigation FBI, Multi-State Information Sharing and Analysis Center MS-ISAC, and Department of Health and Human Services HHS—released a joint Cybersecurity Advisory, StopRansomware: RansomHub Ransomware. This advisory provides network...

CISA and Partners Release Advisory on Threat Actors Exploiting Ivanti Connect Secure and Policy Secure Gateways Vulnerabilities

Today, CISA and the following partners released joint Cybersecurity Advisory Threat Actors Exploit Multiple Vulnerabilities in Ivanti Connect Secure and Policy Secure Gateways: Federal Bureau of Investigation FBI Multi-State Information Sharing & Analysis Center MS-ISAC Australian Signals...

FBI and CISA Release Update on AvosLocker Advisory

Today, the Federal Bureau of Investigation FBI and the Cybersecurity and Infrastructure Security Agency CISA released a joint Cybersecurity Advisory CSA, StopRansomware: AvosLocker Ransomware Update to disseminate known indicators of compromise IOCs, tactics, techniques, and procedures TTPs, and...

CISA and Partners Release Joint Guide to Securing Remote Access Software

Today, CISA, Federal Bureau of Investigation FBI, the National Security Agency NSA, Multi-State Information Sharing and Analysis Center MS-ISAC, and the Israel National Cyber Directorate INCD released the Guide to Securing Remote Access Software. This new joint guide is the result of a...

CISA and FBI Release Joint Advisory in Response to Active Exploitation of PaperCut Vulnerability

CISA and FBI have released a joint Cybersecurity Advisory CSA, Malicious Actors Exploit CVE-2023-27350 in PaperCut MF and NG. This joint advisory provides details related to an exploitation of PaperCut MF/NG vulnerability CVE-2023-27350. FBI observed malicious actors exploit CVE-2023-27350...

Threats of Machine-Generated Text

With the release of ChatGPT, Ive read many random articles about this or that threat from the technology. This paper is a good survey of the field: what the threats are, how we might detect machine-generated text, directions for future research. Its a solid grounding amongst all of the hype...

Why Is Snapshot Scanning Not Enough?

As new scanning technologies are released, their supposed superiority is touted over the others. The problem is, however, that there is no best scanning technology, all of them have strengths and limitations. If recent claims from several vendors are believed, a “best” scanning method called...

CISA Issues Emergency Directive and Releases Advisory Related to VMware Vulnerabilities

CISA has issued Emergency Directive ED 22-03 and released a Cybersecurity Advisory CSA in response to active and expected exploitation of multiple vulnerabilities in the following VMware products: VMware Workspace ONE Access Access, VMware Identity Manager vIDM, VMware vRealize Automation vRA,...

Infographic: Log4Shell Vulnerability Impact by the Numbers

The full scope of risk presented by the Log4Shell vulnerability is something unprecedented, spanning every type of organization across every industry. Hard to find but easy to exploit, Log4Shell immediately places hundreds of millions of Java-based applications, databases, and devices at risk...

Forrester report for Rapid7: number juggling and an excellent overview of Vulnerability Management problems

I recently read Forrester's 20-page report "The Total Economic Impact Of Rapid7 InsightVM". It is about the Cost Savings And Business Benefits that Vulnerability Management solution can bring to the organizations. In short, I didn't like everything related to money. It seems like juggling with...

A Deepfake Deep Dive into the Murky World of Digital Imitation

About a year ago, top deepfake artist Hao Li came to a disturbing realization: Deepfakes, i.e. the technique of human-image synthesis based on artificial intelligence AI to create fake content, is rapidly evolving. In fact, Li believes that in as soon as six months, deepfake videos will be...

Incident Response report 2018

Download full report PDF Introduction This report covers our team's incident response practices for the year 2018. We have thoroughly analyzed all the service requests, customer conversations and incident response deliverables to provide you an overview in numbers. The report includes statistics ...

Kernel-Mode Rootkit Hunter: Tyton

Loadable kernel modules, LKMs for short, are an integral companion to the Linux kernel. Typically, LKMs are used to add support for new hardware as device drivers or file systems or add additional system calls. Without LKMs, an operating system would have to include all possible anticipated...

Blocking Cryptocurrency Mining Using Cisco Security Products

Cisco Talos is releasing a whitepaper addressing Cryptocurrency mining and all the ways to block it using Cisco Security products. The value of cryptocurrencies has fluctuated wildly, but the value is still high enough to garner a lot of attention, both legitimate and malicious. Most of the...

BeRoot For Windows - Privilege Escalation Project

BeRoots is a post exploitation tool to check common Windows misconfigurations to find a way to escalate our privilege. A compiled version is available here. It will be added to the pupy project as a post exploitation module so it will be executed in memory without touching the disk. Except one...

Detect Illegal Wireless Network Activities: WIPI-HUNTER

WipiHunter is developed for detecting illegal wireless network activities; howver, it shouldn’t be seen only as a piece of code. Instead, actually it is a philosophy. You can infer from this project new wireless network illegal activity detection methods. New methods, new ideas and different poin...

Generic Signature Format for SIEM Systems: Sigma

Sigma is a generic and open signature format that allows you to describe relevant log events in a straight forward manner. The rule format is very flexible, easy to write and applicable to any type of log file. The main purpose of this project is to provide a structured form in which researchers ...

A Death Match of Domain Generation Algorithms

By Hongliang Liu and Yuriy Yuzifovich Originally posted on December 29, 2017 Today's post is all about DGA's Domain Generation Algorithms: what they are, why they came into existence, what are some use cases where they are used, and, most importantly - how to detect and block them. As we will...

Revoke-Obfuscation: PowerShell Obfuscation Detection Using Science

Many attackers continue to leverage PowerShell as a part of their malware ecosystem, mostly delivered and executed by malicious binaries and documents. Of malware that uses PowerShell, the most prevalent use is the garden-variety stager: an executable or document macro that launches PowerShell to...

Robust ClamAV-based Linux Malware Scanner: MalScan

Malscan is a robust and fully featured scanning platform for Linux servers that greatly simplifies keeping your web servers secure and malware-free. It is built upon the ClamAV platform, providing all of the features of Clamscan with a host of new features and detection modes. Features Multiple...