Experts Discover Backdoor Deployed on the U.S. Federal Agency's Network

A U.S. federal government commission associated with international rights has been targeted by a backdoor that reportedly compromised its internal network in what the researchers described as a "classic APT-type operation." "This attack could have given total visibility of the network and complet...

PortBender - TCP Port Redirection Utility

PortBender is a TCP port redirection utility that allows a red team operator to redirect inbound traffic destined for one TCP port e.g., 445/TCP to another TCP port e.g., 8445/TCP. PortBender includes an aggressor script that operators can leverage to integrate the tool with Cobalt Strike. Howeve...

Divergent: "Fileless" NodeJS Malware Burrows Deep Within the Host

Update 09/27/2019: Additional information regarding the malware interaction with various online advertisements has been included to highlight the click-fraud related network communications associated with Divergent. Executive summary Cisco Talos recently discovered a new malware loader being used...

Microsoft Warns of a New Rare Fileless Malware Hijacking Windows Computers

Watch out Windows users! There's a new strain of malware making rounds on the Internet that has already infected thousands of computers worldwide and most likely, your antivirus program would not be able to detect it. Why? That's because, first, it's an advanced fileless malware and second, it...

Thousands of PCs Affected by Nodersok/Divergent Malware

New malware identified by Microsoft and Cisco Talos has affected thousands of PCs in the United States and Europe and turns systems into proxies for performing malicious activity, the companies said. The fileless threat—called Nodersok by Microsoft and Divergent by Cisco Talos—has many of its own...

Bring your own LOLBin: Multi-stage, fileless Nodersok campaign delivers rare Node.js-based malware

We’ve discussed the challenges that fileless threats pose in security, and how Microsoft Defender Advanced Threat Protection Microsoft Defender ATP employs advanced strategies to defeat these sophisticated threats. Part of the slyness of fileless malware is their use of living-off-the-land...

New FakeNet-NG Feature: Content-Based Protocol Detection

I Matthew Haigh recently contributed to FLARE’s FakeNet-NG network simulator by adding content-based protocol detection and configuration. This feature is useful for analyzing malware that uses a protocol over a non-standard port; for example, HTTP over port 81. The new feature also detects and...

TorWall - Transparent Tor for Windows

Tallow is a small program that redirects all outbound traffic from a Windows machine via the Tor anonymity network. Any traffic that cannot be handled by Tor, e.g. UDP, is blocked. Tallow also intercepts and handles DNS requests preventing potential leaks. Tallow has several applications,...

Windows Packet Divert: WinDivert

Windows Packet Divert WinDivert is a user-mode packet capture-and-divert package for Windows Vista, Windows 2008, Windows 7, Windows 8 and Windows 10. WinDivert allows usermode programs to capture/modify/drop network packets sent to/from the Windows network stack. In summary, WinDivert can captur...