Microsoft has warned users about a new password-spraying attack by a hacking group Storm-1977 that targets cloud users. The Microsoft Threat Intelligence team reported a new warning after discovering threat actors are abusing unsecured workload identities to access restricted resources.
According to Microsoft, “Container technology has become essential for modern application development and deployment. It's a critical component for over 90% of cloud-native organizations, facilitating swift, reliable, and flexible processes that drive digital transformation.”
Research says 51% of such workload identities have been inactive for one year, which is why attackers are exploiting this attack surface. The report highlights the “adoption of containers-as-a-service among organizations rises.” According to Microsoft, it continues to look out for unique security dangers that affect “containerized environments.”
The password-spraying attack targeted a command line interface tool “AzureChecker” to download AES-encrypted data which revealed the list of password-spray targets after it was decoded. To make things worse, the “threat actor then used the information from both files and posted the credentials to the target tenants for validation.”
The attack allowed the Storm-1977 hackers to leverage a guest account to make a compromised subscription resource group and over 200 containers that were used for crypto mining.
The solution to the problem of password spraying attacks is eliminating passwords. It can be done by moving towards passkeys, a lot of people are already doing that.
Modify the Kubernetes role-based access controls for every user and service account to only retain permissions that are required.
According to Microsoft, “Recent updates to Microsoft Defender for Cloud enhance its container security capabilities from development to runtime. Defender for Cloud now offers enhanced discovery, providing agentless visibility into Kubernetes environments, tracking containers, pods, and applications.” These updates upgrade security via continuous granular scanning.
Russian state-sponsored hacking group APT28 (Fancy Bear/Forest Blizzard/Sofacy) has employed a novel "nearest neighbor attack" to breach enterprise WiFi networks from thousands of miles away. The attack, first detected on February 4, 2022, targeted a U.S. company in Washington, D.C., involved in Ukraine-related projects. Cybersecurity firm Volexity identified the intrusion, highlighting APT28’s innovative approach to bypass multi-factor authentication (MFA).
APT28 initiated the attack by breaching a nearby organization’s WiFi network, exploiting dual-home devices such as laptops or routers with both wired and wireless connections. These devices allowed the hackers to connect to the target’s WiFi network. By daisy-chaining access to multiple organizations, the hackers were able to connect to the victim's wireless network and move laterally across the system.
The hackers were able to bypass multi-factor authentication on the company’s WiFi network, despite being physically located thousands of miles away. Once within range, they compromised access to three wireless access points near the target’s conference room windows and used remote desktop protocol (RDP) from an unprivileged user to roam across the network.
The attackers dumped Windows registry hives (SAM, Security, and System) using a script called servtask.bat, compressing them into a ZIP file for exfiltration. This process allowed APT28 to gather sensitive data without causing significant disruptions to the target network. The focus of the attack was on individuals and projects related to Ukraine, in line with Russia’s geopolitical interests.
Volexity's investigation revealed that APT28 was particularly interested in data from individuals with expertise in Ukraine-related projects. This highlights the targeted nature of the attack, aimed at collecting intelligence from a specific field of work.
The attack underscores the need for robust WiFi security and network segmentation. APT28’s ability to exploit physical proximity and dual-home devices highlights the growing sophistication of cyberattacks. Organizations should consider the following measures:
APT28’s "nearest neighbor attack" serves as a reminder of the advanced techniques used by state-sponsored hackers. Vigilance, along with layered cybersecurity defenses, is crucial in defending against such sophisticated attacks.