Tuesday, July 15, 2025
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Credential Theft

Microsoft Secure
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Defending against evolving identity attack techniques

Threat actors continue to develop and leverage various techniques that aim to compromise cloud identities. Despite advancements in protections like multifactor authentication (MFA) and passwordless solutions, social engineering remains a key aspect of phishing attacks. Implementing phishing-resistant solutions, like passkeys, can improve security against these evolving threats.
The post Defending against evolving identity attack techniques appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure
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Lumma Stealer: Breaking down the delivery techniques and capabilities of a prolific infostealer

Over the past year, Microsoft Threat Intelligence observed the persistent growth and operational sophistication of Lumma Stealer, an info-stealing malware used by multiple financially motivated threat actors to target various industries. Microsoft, partnering with others across industry and international law enforcement, facilitated the disruption of Lumma infrastructure.
The post Lumma Stealer: Breaking down the delivery techniques and capabilities of a prolific infostealer appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure
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Threat actors misuse Node.js to deliver malware and other malicious payloads

Since October 2024, Microsoft Defender Experts has observed and helped multiple customers address campaigns leveraging Node.js to deliver malware and other payloads that ultimately lead to information theft and data exfiltration.
The post Threat actors misuse Node.js to deliver malware and other malicious payloads appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure
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Threat actors leverage tax season to deploy tax-themed phishing campaigns

As Tax Day approaches in the United States on April 15, Microsoft has detected several tax-themed phishing campaigns employing various tactics. These campaigns use malicious hyperlinks and attachments to deliver credential phishing and malware including RaccoonO365, AHKBot, Latrodectus, BruteRatel C4 (BRc4), and Remcos.
The post Threat actors leverage tax season to deploy tax-themed phishing campaigns appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure
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Phishing campaign impersonates Booking .com, delivers a suite of credential-stealing malware

Starting in December 2024, leading up to some of the busiest travel days, Microsoft Threat Intelligence identified a phishing campaign that impersonates online travel agency Booking.com and targets organizations in the hospitality industry. The campaign uses a social engineering technique called ClickFix to deliver multiple credential-stealing malware in order to conduct financial fraud and theft. […]
The post Phishing campaign impersonates Booking .com, delivers a suite of credential-stealing malware appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure
TH Author

Malvertising campaign leads to info stealers hosted on GitHub

Microsoft detected a large-scale malvertising campaign in early December 2024 that impacted nearly one million devices globally. The attack originated from illegal streaming websites embedded with malvertising redirectors and ultimately redirected users to GitHub to deliver initial access payloads as the start of a modular and multi-stage attack chain.
The post Malvertising campaign leads to info stealers hosted on GitHub appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure
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Frequent freeloader part II: Russian actor Secret Blizzard using tools of other groups to attack Ukraine

Since January 2024, Microsoft has observed Secret Blizzard using the tools or infrastructure of other threat groups to attack targets in Ukraine and download its custom backdoors Tavdig and KazuarV2.
The post Frequent freeloader part II: Russian actor Secret Blizzard using tools of other groups to attack Ukraine appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure
TH Author

File hosting services misused for identity phishing

Since mid-April 2024, Microsoft has observed an increase in defense evasion tactics used in campaigns abusing file hosting services like SharePoint, OneDrive, and Dropbox. These campaigns use sophisticated techniques to perform social engineering, evade detection, and compromise identities, and include business email compromise (BEC) attacks.
The post File hosting services misused for identity phishing appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure
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Storm-0501: Ransomware attacks expanding to hybrid cloud environments

Microsoft has observed the threat actor tracked as Storm-0501 launching a multi-staged attack where they compromised hybrid cloud environments and performed lateral movement from on-premises to cloud environment, leading to data exfiltration, credential theft, tampering, persistent backdoor access, and ransomware deployment. The said attack targeted multiple sectors in the United States, including government, manufacturing, transportation, […]
The post Storm-0501: Ransomware attacks expanding to hybrid cloud environments appeared first on Microsoft Security Blog. READ MORE HERE…

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Microsoft Secure
TH Author

“Dirty stream” attack: Discovering and mitigating a common vulnerability pattern in Android apps

Microsoft discovered a vulnerability pattern in multiple popular Android applications that could enable a malicious application to overwrite files in the vulnerable application’s internal data storage directory, which could lead to arbitrary code execution and token theft, among other impacts. We have shared our findings with Google’s Android Application Security Research team, as well as the developers of apps found vulnerable to this issue. We anticipate that the vulnerability pattern could be found in other applications. We’re sharing this research more broadly so developers and publishers can check their apps for similar issues, fix as appropriate, and prevent them from being introduced into new apps or releases.
The post “Dirty stream” attack: Discovering and mitigating a common vulnerability pattern in Android apps appeared first on Microsoft Security Blog. READ MORE HERE…

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