Silk Typhoon is a Chinese state actor focused on espionage campaigns targeting a wide range of industries in the US and throughout the world. In recent months, Silk Typhoon has shifted to performing IT supply chain attacks to gain access to targets.
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Since August 2023, Microsoft has observed intrusion activity targeting and successfully stealing credentials from multiple Microsoft customers that is enabled by highly evasive password spray attacks. Microsoft has linked the source of these password spray attacks to a network of compromised devices we track as CovertNetwork-1658, also known as xlogin and Quad7 (7777).
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.
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.
Between April and July 2024, Microsoft observed Iranian state-sponsored threat actor Peach Sandstorm deploying a new custom multi-stage backdoor, which we named Tickler.
The Microsoft security team detected a nation-state attack on our corporate systems on January 12, 2024, and immediately activated our response process to investigate, disrupt malicious activity, mitigate the attack, and deny the threat actor further access.
Microsoft Threat Intelligence presents cases of threat actors misusing OAuth applications as automation tools in financially motivated attacks.
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.
Since February 2023, Microsoft has observed a high volume of password spray attacks attributed to Peach Sandstorm, an Iranian nation-state group. In a small number of cases, Peach Sandstorm successfully authenticated to an account and used a combination of publicly available and custom tools for persistence, lateral movement, and exfiltration.
Cloud cryptojacking, a type of cyberattack that uses computing power to mine cryptocurrency, could result in financial loss to targeted organizations due to the compute fees that can be incurred from the abuse.
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