Threats Tagged 'digital signatures'

Multiple phishing campaigns were identified using workplace meeting lures, PDF attachments, and abuse of legitimate binaries to deliver signed malware. The attacks used digitally signed executables masquerading as legitimate software to install remote monitoring and management (RMM) tools like ScreenConnect, Tactical RMM, and Mesh Agent. These tools enabled attackers to establish persistence and move laterally within compromised environments. The malware was signed using an Extended Validation certificate issued to TrustConnect Software PTY LTD. The campaigns demonstrate how familiar branding and trusted digital signatures can be exploited to bypass user suspicion and gain an initial foothold in enterprise networks.

MediumMalwareUnited StatesUnited KingdomAustralia+7#persistence#lateral movement#tactical rmm

A new malware-as-a-service (MaaS) called TrustConnect has been discovered masquerading as a legitimate remote monitoring and management (RMM) tool. The malware, classified as a remote access trojan (RAT), uses a fake business website as its command and control center and MaaS portal. Priced at $300 per month, it offers features like a web-based C2 dashboard, automated payload generation with digital signatures, and remote desktop capabilities. The malware has been distributed through various email campaigns, often alongside legitimate RMM tools. Proofpoint researchers identified links between TrustConnect's creator and previous users of Redline stealer. The emergence of this new MaaS demonstrates the ongoing evolution of the cybercrime market and the thriving ecosystem of RMM abuse.

MediumMalwareUnited StatesUnited KingdomCanada+7#rmm abuse#cybercrime#email campaigns

A sophisticated cyber espionage campaign attributed to the PRC-nexus threat actor UNC6384 targeted diplomats in Southeast Asia and other global entities. The attack chain involved hijacking web traffic through a captive portal redirect to deliver malware disguised as software updates. The multi-stage attack utilized advanced social engineering, adversary-in-the-middle techniques, and evasion tactics. The malware payload, SOGU.SEC backdoor, was deployed through a digitally signed downloader (STATICPLUGIN) and a side-loaded DLL (CANONSTAGER). The campaign demonstrated the evolving capabilities of PRC-nexus threat actors, employing stealthy tactics to avoid detection and leveraging legitimate Windows features for malicious purposes.

MediumMalwareUnited KingdomGermanyFrance+5#prc-nexus#social engineering#in-memory execution