Mistic Malware Blends Into Microsoft Endpoint Components Using Malicious EndpointDlp.dll

Gbhackers •Mayura Kathir • June 30, 2026

A newly identified Windows backdoor, dubbed Mistic, that has been observed in intrusions since April 2026 and appears designed for stealthy, long-term access. The malware uses DLL sideloading, in-memory execution, and self-deletion to blend into enterprise environments and minimize forensic traces. Mistic is introduced via a DLL sideloading chain that abuses a legitimate executable named […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Mistic Malware Targets Microsoft Endpoint with Stealthy DLL Sideloading Technique The Mistic malware, a newly identified Windows backdoor, has been active since April 2026, utilizing DLL sideloading to infiltrate enterprise environments. It exploits a legitimate executable, MpExtMs.exe, to load a malicious DLL named EndpointDlp.dll, which mimics Microsoft components. This malware employs in-memory execution and self-deletion to evade detection, making it difficult for signature-based scanners to identify it. Mistic supports various backdoor functions, including file management and remote code execution, while also featuring a kill switch for operators to erase traces post-operation. Its deployment has been linked to the initial access broker Woodgnat, known for selling access to ransomware affiliates. Observations indicate Mistic's use alongside a .NET credential-stealing component, emphasizing stealth and persistence. Symantec and Carbon Black have reported Mistic activity across sectors such as insurance, education, and IT, highlighting a growing concern for enterprise security. 2 sources 70

Extracted Entities

Mistic Malware Blends Into Microsoft Endpoint Components Using Malicious EndpointDlp.dll

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Extracted Entities

Attack Types (1)

Malware (1)

MITRE ATT&CK (2)

Platforms (1)