Malicious DLL Sideload via SentinelBrowserNativeHost

ATT&CK techniques

Execution → Defense Evasion

Recon
Resource Dev
Initial Access
Execution
- T1574.001DLL
Persistence
- T1574.001DLL
Priv Esc
- T1574.001DLL
Defense Evasion
- T1574.001DLL
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects SentinelBrowserNativeHost.exe loading SentinelAgentCore.dll from a directory outside the legitimate SentinelOne installation path, indicating DLL sideloading used to run Cephalus ransomware loader code under a trusted signed binary. The rogue DLL pairs with a data.bin payload to decrypt and execute the ransomware. Abusing a security vendor binary for sideloading evades trust-based defenses.

Reporting behind it

Related detections9 linkedT1574.001 — drag to rearrange

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Malicious DLL Sideload via SentinelBrowserNativeHost

Pivot detection · T1574.001 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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