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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…
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…
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…
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…
Microsoft Threat Intelligence presents cases of threat actors misusing OAuth applications as automation tools in financially motivated attacks.
The post Threat actors misuse OAuth applications to automate financially driven attacks appeared first on Microsoft Security Blog. READ MORE HERE…
Microsoft Threat Intelligence continues to track and disrupt malicious activity attributed to a Russian state-sponsored actor we track as Star Blizzard, who has improved their detection evasion capabilities since 2022 while remaining focused on email credential theft against targets.
The post Star Blizzard increases sophistication and evasion in ongoing attacks appeared first on Microsoft Security Blog. READ MORE HERE…
Microsoft has observed ongoing activity from mobile banking trojan campaigns targeting users in India with social media messages and malicious applications designed to impersonate legitimate organizations and steal users’ information for financial fraud scams.
The post Social engineering attacks lure Indian users to install Android banking trojans appeared first on Microsoft Security Blog. READ MORE HERE…
Microsoft has been tracking activity related to the financially motivated threat actor Octo Tempest, whose evolving campaigns represent a growing concern for many organizations across multiple industries.
The post Octo Tempest crosses boundaries to facilitate extortion, encryption, and destruction appeared first on Microsoft Security Blog. READ MORE HERE…
Microsoft Threat Intelligence has identified highly targeted social engineering attacks using credential theft phishing lures sent as Microsoft Teams chats by the threat actor that Microsoft tracks as Midnight Blizzard (previously tracked as NOBELIUM).
The post Midnight Blizzard conducts targeted social engineering over Microsoft Teams appeared first on Microsoft Security Blog. READ MORE HERE…
LSASS credential dumping is becoming prevalent, especially with the rise of human-operated ransomware. In May 2022, Microsoft participated in an evaluation conducted by AV-Comparatives specifically on detecting and blocking this attack technique and we’re happy to report that Microsoft Defender for Endpoint achieved 100% detection and prevention scores.
The post Detecting and preventing LSASS credential dumping attacks appeared first on Microsoft Security Blog. READ MORE HERE…