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Threat actors have been observed abusing Amazon S3 (Simple Storage Service) Transfer Acceleration feature as part of ransomware attacks designed to exfiltrate victim data and upload them to S3 buckets under their control. "Attempts were made to disguise the Golang ransomware as the notorious LockBit ransomware," Trend Micro researchers Jaromir Horejsi and Nitesh Surana said . "However, such is not the case, and the attacker only seems to be capitalizing on LockBit's notoriety to further tighten the noose on their victims." The ransomware artifacts have been found to embed hard-coded Amazon Web Services (AWS) credentials to facilitate data exfiltration to the cloud, a sign that adversaries are increasingly weaponizing popular cloud service providers for malicious schemes. The AWS account used in the campaign is presumed to be either their own or compromised. Following responsible disclosure to the AWS security team, the identified AWS access keys and accounts...

Russian-speaking users have become the target of a new phishing campaign that leverages an open-source phishing toolkit called Gophish to deliver DarkCrystal RAT (aka DCRat) and a previously undocumented remote access trojan dubbed PowerRAT. "The campaign involves modular infection chains that are either Maldoc or HTML-based infections and require the victim's intervention to trigger the infection chain," Cisco Talos researcher Chetan Raghuprasad said in a Tuesday analysis. The targeting of Russian-speaking users is an assessment derived from the language used in the phishing emails, the lure content in the malicious documents, links masquerade as Yandex Disk ("disk-yandex[.]ru"), and HTML web pages disguised as VK, a social network predominantly used in the country. Gophish refers to an open-source phishing framework that allows organizations to test their phishing defenses by leveraging easy-to-use templates and launch email-based campaigns that can the...

Details have emerged about a now-patched security flaw in Styra's Open Policy Agent ( OPA ) that, if successfully exploited, could have led to leakage of New Technology LAN Manager ( NTLM ) hashes. "The vulnerability could have allowed an attacker to leak the NTLM credentials of the OPA server's local user account to a remote server, potentially allowing the attacker to relay the authentication or crack the password," cybersecurity firm Tenable said in a report shared with The Hacker News. The security flaw, described as a Server Message Block (SMB) force-authentication vulnerability and tracked as CVE-2024-8260 (CVSS score: 6.1/7.3), impacts both the CLI and Go software development kit (SDK) for Windows. At its core, the issue stems from an improper input validation that can lead to unauthorized access by leaking the Net-NTLMv2 hash of the user who is currently logged into the Windows device running the OPA application. However, for this to work, the victim ...

Bad actors have been observed targeting Docker remote API servers to deploy the SRBMiner crypto miner on compromised instances, according to new findings from Trend Micro. "In this attack, the threat actor used the gRPC protocol over h2c to evade security solutions and execute their crypto mining operations on the Docker host," researchers Abdelrahman Esmail and Sunil Bharti said in a technical report published today. "The attacker first checked the availability and version of the Docker API, then proceeds with requests for gRPC/h2c upgrades and gRPC methods to manipulate Docker functionalities." It all starts with the attacker conducting a discovery process to check for public-facing Docker API hosts and the availability of HTTP/2 protocol upgrades in order to follow up with a connection upgrade request to the h2c protocol (i.e., HTTP/2 sans TLS encryption). The adversary also proceeds to check for gRPC methods that are designed to carry out various tasks...

Service accounts are vital in any enterprise, running automated processes like managing applications or scripts. However, without proper monitoring, they can pose a significant security risk due to their elevated privileges. This guide will walk you through how to locate and secure these accounts within Active Directory (AD), and explore how Silverfort’s solutions can help enhance your organization’s security posture. Understanding Security Accounts Service accounts are specialized Active Directory accounts that provide the necessary security context for services running on servers. Unlike user accounts , they aren’t linked to individuals but enable services and applications to interact with the network autonomously. With their high-level permissions, service accounts are attractive targets for attackers if left unmanaged. Hence, proper management and monitoring are critical to prevent security breaches. Finding Service Accounts in Active Directory Due to the sheer number of acco...