SolarWinds Attackers Spotted Using New Tactics, Malware

One year after the notorious and far-reaching SolarWinds supply-chain attacks, its orchestrators are on the offensive again. Researchers said they’ve seen the threat group – which Microsoft refers to as “Nobelium” and which is linked to Russia’s spy agency – compromising global business and...

The hunt for NOBELIUM, the most sophisticated nation-state attack in history

This is the second in a four-part blog series on the NOBELIUM nation-state cyberattack. In December 2020, Microsoft began sharing details with the world about what became known as the most sophisticated nation-state cyberattack in history. Microsoft’s four-part video series “Decoding NOBELIUM”...

The hunt for NOBELIUM, the most sophisticated nation-state attack in history

This is the second in a four-part blog series on the NOBELIUM nation-state cyberattack. In December 2020, Microsoft began sharing details with the world about what became known as the most sophisticated nation-state cyberattack in history. Microsoft’s four-part video series “Decoding NOBELIUM”...

SolarWinds APT Targets Tech Resellers in Latest Supply-Chain Cyberattacks

The SolarWinds attackers – an advanced persistent threat APT known as Nobelium – have started a new wave of supply-chain intrusions, this time using the technology reseller/service provider community to attack their targets. The activity has affected victims in North America and Europe thus far,...

Neiman Marcus data breach affects millions

Millions of Neiman Marcus customers have had their personal and financial information exposed in a data breach. In a press release the company confirmed unauthorized access to customer online accounts. According to the press release 4.6 million customers of Neiman Marcus Group stores, specificall...

This New Malware Family Using CLFS Log Files to Avoid Detection

Cybersecurity researchers have disclosed details about a new malware family that relies on the Common Log File System CLFS to hide a second-stage payload in registry transaction files in an attempt to evade detection mechanisms. FireEye's Mandiant Advanced Practices team, which made the discovery...

PST, Want a Shell? ProxyShell Exploiting Microsoft Exchange Servers

In August 2021, Mandiant Managed Defense identified and responded to the exploitation of a chain of vulnerabilities known as ProxyShell. The ProxyShell vulnerabilities consist of three CVEs CVE-2021-34473, CVE-2021-34523, CVE-2021-31207 affecting the following versions of on-premises Microsoft...

Too Log; Didn't Read — Unknown Actor Using CLFS Log Files for Stealth

The Mandiant Advanced Practices team recently discovered a new malware family we have named PRIVATELOG and its installer, STASHLOG. In this post, we will share a novel and especially interesting technique the samples use to hide data, along with detailed analysis of both files that was performed...

Bug in Millions of Flawed IoT Devices Lets Attackers Eavesdrop

Security researchers have discovered a critical flaw that affects tens of millions of internet-of-things IoT devices – one that exposes live video and audio streams to eavesdropping threat actors and which could enable attackers to take over control of devices, including security webcams and...

Mandiant Discloses Critical Vulnerability Affecting Millions of IoT Devices

Today, Mandiant disclosed a critical risk vulnerability in coordination with the Cybersecurity and Infrastructure Security Agency “CISA” that affects millions of IoT devices that use the ThroughTek “Kalay” network. This vulnerability, discovered by researchers on Mandiant’s Red Team in late 2020,...

CISA Releases Security Advisory for ThroughTek Kalay P2P SDK

CISA has released an Industrial Control Systems ICS advisory detailing a vulnerability affecting several versions of ThroughTek Kalay P2P Software Development Kit SDK. A remote attacker could exploit this vulnerability to take control of an affected system. CISA encourages users and administrator...

UNC215: Spotlight on a Chinese Espionage Campaign in Israel

This blog post details the post-compromise tradecraft and operational tactics, techniques, and procedures TTPs of a Chinese espionage group we track as UNC215. While UNC215’s targets are located throughout the Middle East, Europe, Asia, and North America, this report focuses on intrusion activity...

Kaseya Left Customer Portal Vulnerable to 2015 Flaw in its Own Software

Last week cybercriminals deployed ransomware to 1,500 organizations, including many that provide IT security and technical support to other companies. The attackers exploited a vulnerability in software from Kaseya, a Miami-based company whose products help system administrators manage large...

Smoking Out a DARKSIDE Affiliate’s Supply Chain Software Compromise

Mandiant observed DARKSIDE affiliate UNC2465 accessing at least one victim through a Trojanized software installer downloaded from a legitimate website. While this victim organization detected the intrusion, engaged Mandiant for incident response, and avoided ransomware, others may be at risk. As...

Re-Checking Your Pulse: Updates on Chinese APT Actors Compromising Pulse Secure VPN Devices

On April 20, 2021, Mandiant published detailed results of our investigations into compromised Pulse Secure devices by suspected Chinese espionage operators. This blog post is intended to provide an update on our findings, give additional recommendations to network defenders, and discuss potential...

Shining a Light on DARKSIDE Ransomware Operations

Update May 14: Mandiant has observed multiple actors cite a May 13 announcement that appeared to be shared with DARKSIDE RaaS affiliates by the operators of the service. This announcement stated that they lost access to their infrastructure, including their blog, payment, and CDN servers, and wou...

Ransomware Cyber Attack Forced the Largest U.S. Fuel Pipeline to Shut Down

Colonial Pipeline, which carries 45% of the fuel consumed on the U.S. East Coast, on Saturday said it halted operations due to a ransomware attack, once again demonstrating how critical infrastructure is vulnerable to cyber attacks. "On May 7, the Colonial Pipeline Company learned it was the vict...

The UNC2529 Triple Double: A Trifecta Phishing Campaign

In December 2020, Mandiant observed a widespread, global phishing campaign targeting numerous organizations across an array of industries. Mandiant tracks this threat actor as UNC2529. Based on the considerable infrastructure employed, tailored phishing lures and the professionally coded...

Hackers Exploit SonicWall Zero-Day Bug in FiveHands Ransomware Attacks

An "aggressive" financially motivated threat group tapped into a zero-day flaw in SonicWall VPN appliances prior to it being patched by the company to deploy a new strain of ransomware called FIVEHANDS. The group, tracked by cybersecurity firm Mandiant as UNC2447, took advantage of an "improper S...

UNC2447 SOMBRAT and FIVEHANDS Ransomware: A Sophisticated Financial Threat

Mandiant has observed an aggressive financially motivated group, UNC2447, exploiting one SonicWall VPN zero-day vulnerability prior to a patch being available and deploying sophisticated malware previously reported by other vendors as SOMBRAT. Mandiant has linked the use of SOMBRAT to the...