SCANdalous! (External Detection Using Network Scan Data and Automation)

Real Quick In case you’re thrown by that fantastic title, our lawyers made us change the name of this project so we wouldn’t get sued. SCANdalous—a.k.a. Scannah Montana a.k.a. Scanny McScanface a.k.a. “Scan I Kick It? (Yes You Scan)”—had another name before today that, for legal reasons, we’re keeping to ourselves. A special thanks to...

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Configuring a Windows Domain to Dynamically Analyze an Obfuscated Lateral Movement Tool

We recently encountered a large obfuscated malware sample that offered several interesting analysis challenges. It used virtualization that prevented us from producing a fully-deobfuscated memory dump for static analysis. Statically analyzing a large virtualized sample can take anywhere from several days to several weeks. Bypassing this...

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Using Real-Time Events in Investigations

To understand what a threat actor did on a Windows system, analysts often turn to the tried and true sources of historical endpoint artifacts such as the Master File Table (MFT), registry hives, and Application Compatibility Cache (AppCompat). However, these evidence sources were not designed with detection or incident response in mind;...

May 2020

Analyzing Dark Crystal RAT, a C# backdoor

The FireEye Mandiant Threat Intelligence Team helps protect our customers by tracking cyber attackers and the malware they use. The FLARE Team helps augment our threat intelligence by reverse engineering malware samples. Recently, FLARE worked on a new C# variant of Dark Crystal RAT (DCRat) that the threat intel team passed to us. We...

May 2020

Navigating the MAZE: Tactics, Techniques and Procedures Associated With MAZE Ransomware Incidents

Targeted ransomware incidents have brought a threat of disruptive and destructive attacks to organizations across industries and geographies. FireEye Mandiant Threat Intelligence has previously documented this threat in our investigations of trends across ransomware incidents, FIN6 activity, implications for OT networks, and...

May 2020

Excelerating Analysis, Part 2 — X[LOOKUP] Gon’ Pivot To Ya

In December 2019, we published a blog post on augmenting analysis using Microsoft Excel for various data sets for incident response investigations. As we described, investigations often include custom or proprietary log formats and miscellaneous, non-traditional forensic artifacts. There are, of course, a variety of ways to tackle this...

May 2020

Putting the Model to Work: Enabling Defenders With Vulnerability Intelligence — Intelligence for Vulnerability Management, Part Four

One of the critical strategic and tactical roles that cyber threat intelligence (CTI) plays is in the tracking, analysis, and prioritization of software vulnerabilities that could potentially put an organization’s data, employees and customers at risk. In this four-part blog series, FireEye Mandiant Threat Intelligence highlights...

May 2020

Using Real-Time Events in Investigations

To understand what a threat actor did on a Windows system, analysts often turn to the tried and true sources of historical endpoint artifacts such as the Master File Table (MFT), registry hives, and Application Compatibility Cache (AppCompat). However, these evidence sources were not designed with detection or incident response in mind;...

May 2020

Analyzing Dark Crystal RAT, a C# backdoor

The FireEye Mandiant Threat Intelligence Team helps protect our customers by tracking cyber attackers and the malware they use. The FLARE Team helps augment our threat intelligence by reverse engineering malware samples. Recently, FLARE worked on a new C# variant of Dark Crystal RAT (DCRat) that the threat intel team passed to us. We...

May 2020

Navigating the MAZE: Tactics, Techniques and Procedures Associated With MAZE Ransomware Incidents

Targeted ransomware incidents have brought a threat of disruptive and destructive attacks to organizations across industries and geographies. FireEye Mandiant Threat Intelligence has previously documented this threat in our investigations of trends across ransomware incidents, FIN6 activity, implications for OT networks, and...

May 2020