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Screenshot of Threat and Vulnerability Management

Guidance for preventing, detecting, and hunting for CVE-2021-44228 Log4j 2 exploitation

Microsoft’s unified threat intelligence team, comprising the Microsoft Threat Intelligence Center (MSTIC), Microsoft 365 Defender Threat Intelligence Team, RiskIQ, and the Microsoft Detection and Response Team (DART), among others, have been tracking threats taking advantage of CVE-2021-44228, a remote code ... continue reading
Diagram showing components of Qakbot campaigns as building blocks

A closer look at Qakbot’s latest building blocks (and how to knock them down)

Multiple Qakbot campaigns that are active at any given time prove that the decade-old malware continues to be many attackers’ tool of choice, a customizable chameleon that adapts to suit the needs of the multiple threat actor groups that utilize ... continue reading
Map showing countries targeted by NICKEL attacks

NICKEL targeting government organizations across Latin America and Europe

The Microsoft Threat Intelligence Center (MSTIC) has observed NICKEL, a China-based threat actor, targeting governments, diplomatic entities, and non-governmental organizations (NGOs) across Central and South America, the Caribbean, Europe, and North America. MSTIC has been tracking NICKEL since 2016 and ... continue reading
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Fixing Mobile Devices in Non-Compliant Status – MEM

Introduction This is John Barbare and I am a Sr Customer Engineer at Microsoft focusing on all things in the Cybersecurity space. In this blog, I will be focusing on Mobile Devices in Non-Compliance status after applying a Security Update ... continue reading
Column chart showing number of notifications for 2019, 2020, and 2021

Iranian targeting of IT sector on the rise

Iranian threat actors are increasing attacks against IT services companies as a way to access their customers’ networks. This activity is notable because targeting third parties has the potential to exploit more sensitive organizations by taking advantage of trust and ... continue reading
Diagram showing how adaptive protection works

AI-driven adaptive protection against human-operated ransomware

In human-operated ransomware attacks, threat actors use predictable methods to enter a device but eventually rely on hands-on-keyboard activities to move inside a network. To fortify our existing cloud-delivered automated protection against complex attacks like human-operated ransomware, we developed a ... continue reading
Microsoft Sysinternals report in VirusTotal.

New Microsoft Sysmon report in VirusTotal improves security

Today, following the 25th year anniversary of Microsoft Sysinternals, we are announcing the general availability of a new Microsoft Sysmon report in VirusTotal. Whether you’re an IT professional or a developer, you’re probably already using Microsoft Sysinternals utilities to help you ... continue reading
Diagram showing structure of Microsoft.IdentityServer.ServiceHost.exe after loading version.dll

FoggyWeb: Targeted NOBELIUM malware leads to persistent backdoor

Microsoft continues to work with partners and customers to track and expand our knowledge of the threat actor we refer to as NOBELIUM, the actor behind the SUNBURST backdoor, TEARDROP malware, and related components. As we stated before, we suspect ... continue reading
Screenshot of code showing the original exploit vector

Analyzing attacks that exploit the CVE-2021-40444 MSHTML vulnerability

In August, Microsoft Threat Intelligence Center (MSTIC) identified a small number of attacks (less than 10) that attempted to exploit a remote code execution vulnerability in MSHTML using specially crafted Microsoft Office documents. These attacks used the vulnerability, tracked as ... continue reading
Screenshot of email

Attackers use Morse code, other encryption methods in evasive phishing campaign

Cybercriminals attempt to change tactics as fast as security and protection technologies do. During our year-long investigation of a targeted, invoice-themed XLS.HTML phishing campaign, attackers changed obfuscation and encryption mechanisms every 37 days on average, demonstrating high motivation and skill ... continue reading