Threats Tagged 'powershell rat'

Between January and April 2026, a coordinated social engineering operation named Spring Ring leveraged external Microsoft Teams accounts to impersonate IT help desk personnel, targeting over 150 employees across at least 10 companies. Adversaries initiated voice phishing calls to coerce victims into executing remote monitoring and management tools or custom malware. In advanced variants, attackers transitioned from vishing to NTLM relay attacks targeting domain controllers. Two distinct campaigns were observed: Campaign A utilized RMM tools and obfuscated PowerShell-based RATs, while Campaign B employed tailored cloud infrastructure with PetitPotam exploitation for domain-level compromise. The operation demonstrates the weaponization of trusted collaboration platforms as primary attack vectors, exploiting the trust gap in SaaS applications.

A targeted intrusion campaign impacting Israeli organizations has been identified, leveraging compromised internal email infrastructure to distribute phishing messages. The attack uses a multi-stage, PowerShell-based infection chain, culminating in the delivery of a remote access trojan (RAT). Key characteristics include a full PowerShell-based delivery chain, obfuscated payloads, evidence of lateral movement, and potential overlap with MuddyWater campaigns. The attack begins with phishing emails, progresses through a spoofed Microsoft Teams page, and uses social engineering to execute malicious PowerShell commands. The payload retrieves additional data, deploys a RAT, and establishes communication with a command and control server. The campaign demonstrates the effectiveness of living-off-the-land techniques, layered evasion, and adaptive C2 communication.

MediumMalwareIsraelGermanyUnited Kingdom+2#israeli targets#obfuscation#social engineering