A suspicious direct syscall was executed

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-06-04
Category
Analytics Alert Reference
Order
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

1 Day

Required Data

  • Requires:
    • XDR Agent
  • Requires:
    • eXtended Threat Hunting (XTH)

Detection Modules

ATT&CK Tactic

Execution (TA0002)

ATT&CK Technique

Native API (T1106)

Severity

Low

Description

A suspicious direct syscall was executed.

Attacker's Goals

An attacker might try to use direct syscalls to evade detection from a legitimate program.

Investigative actions

  • Investigate the direct syscall mapped image to verify if it is malicious.
  • Check if this direct syscall is part of the process execution flow.

Variations

A suspicious direct syscall was executed by unsigned process from a user folder

Synopsis

ATT&CK Tactic

Execution (TA0002)

ATT&CK Technique

Native API (T1106)

Severity

High

Description

A suspicious direct syscall was executed by unsigned process from a user folder.

Attacker's Goals

An attacker might try to use direct syscalls to evade detection from a legitimate program.

Investigative actions

  • Investigate the direct syscall mapped image to verify if it is malicious.
  • Check if this direct syscall is part of the process execution flow.


A suspicious direct syscall was executed by a DLL host application

Synopsis

ATT&CK Tactic

Execution (TA0002)

ATT&CK Technique

Native API (T1106)

Severity

Medium

Description

A suspicious direct syscall was executed by a DLL host application.

Attacker's Goals

An attacker might try to use direct syscalls to evade detection from a legitimate program.

Investigative actions

  • Investigate the direct syscall mapped image to verify if it is malicious.
  • Check if this direct syscall is part of the process execution flow.