Microsoft actions following attack by nation state actor Midnight Blizzard

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 has identified Read More …

Russian Foreign Intelligence Service (SVR) Exploiting JetBrains TeamCity CVE Globally

The US Federal Bureau of Investigation (FBI) and partners assess Russian Foreign Intelligence Service (SVR) cyber actors – also known as Advanced Persistent Threat 29 (APT 29), the Dukes, CozyBear, and NOBELIUM/Midnight Blizzard – are exploiting CVE-2023-42793 a at a Read More …

Midnight Blizzard conducts targeted social engineering over Microsoft Teams

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). This latest attack, combined with past Read More …

Trello From the Other Side: Tracking APT29 Phishing Campaigns

Since early 2021, Mandiant has been tracking extensive APT29 phishing campaigns targeting diplomatic organizations in Europe, the Americas, and Asia. This blog post discusses our recent observations related to the identification of two new malware families in 2022, BEATDROP and Read More …

Suspected Russian Activity Targeting Government and Business Entities Around the Globe

As the one-year anniversary of the discovery of the SolarWinds supply chain compromise passes, Mandiant remains committed to tracking one of the toughest actors we have encountered. These suspected Russian actors practice top-notch operational security and advanced tradecraft. However, they Read More …

NOBELIUM targeting delegated administrative privileges to facilitate broader attacks

The Microsoft Threat Intelligence Center (MSTIC) has detected nation-state activity associated with the threat actor tracked as NOBELIUM, attempting to gain access to downstream customers of multiple cloud service providers (CSP), managed service providers (MSP), and other IT services organizations Read More …

DarkHalo after SolarWinds: the Tomiris connection

In December 2020, news of the SolarWinds incident took the world by storm. While supply-chain attacks were already a documented attack vector leveraged by a number of APT actors, this specific campaign stood out due to the extreme carefulness of Read More …

Russian hackers had months-long access to Denmark’s central bank

Russian state hackers compromised Denmark’s central bank (Danmarks Nationalbank) and planted malware that gave them access to the network for more than half a year without being detected. The breach was part of the SolarWinds cyber espionage campaign last year Read More …

Nobelium hackers accessed Microsoft customer support tools

Microsoft says they have discovered new attacks conducted by the Russian state-sponsored Nobelium hacking group, including a hacked Microsoft support agent’s computer that exposed customer’s subscription information. Nobelium is Microsoft’s name for a state-sponsored hacking group believed to be operating Read More …