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Diagram of the attacks using Exchange vulnerabilities CVE-2022-41040 and CVE-2022-41082

Analyzing attacks using the Exchange vulnerabilities CVE-2022-41040 and CVE-2022-41082

October 1, 2022 update – Added information about Exploit:Script/ExchgProxyRequest.A, Microsoft Defender AV’s robust detection for exploit behavior related to this threat. We also removed a section on MFA as a mitigation, which was included in a prior version of this ... continue reading
Infection chain describing the usual tactics and techniques used by DEV-0270 actor group.

Profiling DEV-0270: PHOSPHORUS’ ransomware operations

Microsoft threat intelligence teams have been tracking multiple ransomware campaigns and have tied these attacks to DEV-0270, also known as Nemesis Kitten, a sub-group of Iranian actor PHOSPHORUS. Microsoft assesses with moderate confidence that DEV-0270 conducts malicious network operations, including ... continue reading
A screenshot of the digital signature details tab from the file properties page. The tab states that the digital signature for the file is OK. The name indicated under the signer information portion is DSIRF GmbH.

Untangling KNOTWEED: European private-sector offensive actor using 0-day exploits

The Microsoft Threat Intelligence Center (MSTIC) and the Microsoft Security Response Center (MSRC) found a private-sector offensive actor (PSOA) using multiple Windows and Adobe 0-day exploits, including one for the recently patched CVE-2022-22047, in limited and targeted attacks against European ... continue reading

PowerShell and OpenSSH team investments for 2022

It’s time to discuss the team investments for 2022. For some areas we’ll be completing work we’ve already started, and in others we’ll be beginning on new projects. Executive Order on Cybersecurity One of the areas we’ve already spent significant ... 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
Pie graph showing DART engagement metrics by industry spanning from July 2020-June 2021. According to the graph, Consumer/Retail industry holds the highest engagement rate with 13 percent and Energy industry ranks the lowest at just 4 percent.

How cyberattacks are changing according to new Microsoft Digital Defense Report

In 2021, cybercrime has become more sophisticated, widespread, and relentless. Criminals have targeted critical infrastructure—healthcare,1 information technology,2 financial services,3 energy sectors4—with headline-grabbing attacks that crippled businesses and harmed consumers. But there are positive trends—victims are coming forward, humanizing the toll ... continue reading
Number of tests in which the vendor blocked the attack at earliest stage possible. Microsoft successfully blocked at the earliest possible point on six protection tests, more than any other vendor participating in the test.

Stopping Carbanak+FIN7: How Microsoft led in the MITRE Engenuity® ATT&CK® Evaluation

In MITRE Engenuity’s recent Carbanak+FIN7 ATT&CK Evaluation, Microsoft demonstrated that we can stop advanced, real-world attacks by threat actor groups with our industry-leading security capabilities. In this year’s evaluation, we engaged our unified Microsoft 365 Defender stack, with market-leading capabilities ... continue reading
Graph showing timeline of the Necurs takedown and the staging and operation of StrangeU and RandomU

What tracking an attacker email infrastructure tells us about persistent cybercriminal operations

From March to December 2020, we tracked segments of a dynamically generated email infrastructure that attackers used to send more than a million emails per month, distributing at least seven distinct malware families in dozens of campaigns using a variety ... continue reading
Diagram showing IcedID attack chain, with labels identifying what stage the attack was stopped

EDR in block mode stops IcedID cold

We are happy to announce the general availability of endpoint detection and response (EDR) in block mode in Microsoft Defender for Endpoint. EDR in block mode turns EDR detections into real-time blocking of malicious behaviors, malware, and artifacts. It uses ... continue reading
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Demystifying Ransomware Attacks Against Microsoft Defender Solution

Hi IT Pros, As you have known it, Ransomware is in aggravated assault mode at this time of year 2020, the joint cybersecurity advisory comes from the Cybersecurity Infrastructure and Security Agency (CISA), the Federal Bureau of Investigation (FBI), and ... continue reading