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High Number of Egress Network Connections from Unusual Executable

This rule detects a high number of egress network connections from an unusual executable on a Linux system. This could indicate a command and control (C2) communication attempt, a brute force attack via a malware…

Description

This rule detects a high number of egress network connections from an unusual executable on a Linux system. This could indicate a command and control (C2) communication attempt, a brute force attack via a malware infection, or other malicious activity. ESQL rules have limited fields available in its alert documents. Make sure to review the original documents to aid in the investigation of this alert.

Detection logic

Its licence does not clear it for publishing here

Sunturai publishes a detection's own text where the licence it arrived under has been reviewed and permits it, and Elastic License 2.0 has not. The query as its source wrote it, its canonical form and the hash that pins this revision are in the workspace record.

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Detection requirements

Platform
ESXiLinuxmacOSNetwork DevicesOffice SuiteWindows

The rule states no platform. This is derived from the 2 ATT&CK techniques it maps to.

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