Globally uncommon image load from a signed process

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-06-18
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

Detection Modules

ATT&CK Tactic

Defense Evasion (TA0005)

ATT&CK Technique

Severity

Informational

Description

A signed process loaded a DLL that, on a global level, it usually doesn't load.

Attacker's Goals

Attackers may use various methods to execute code from a context of a signed process to avoid detection.

Investigative actions

  • Check if the actor process loaded a suspicious DLL before the alert.
  • Check if the actor process was injected before the alert.
  • Check if the process execution and connections are legitimate.

Variations

Globally uncommon image load from a signed process from a known vendor

Synopsis

ATT&CK Tactic

Defense Evasion (TA0005)

ATT&CK Technique

Severity

Medium

Description

A signed process loaded a DLL that, on a global level, it usually doesn't load.

Attacker's Goals

Attackers may use various methods to execute code from a context of a signed process to avoid detection.

Investigative actions

  • Check if the actor process loaded a suspicious DLL before the alert.
  • Check if the actor process was injected before the alert.
  • Check if the process execution and connections are legitimate.


Globally uncommon unsigned image side loaded to a signed process

Synopsis

ATT&CK Tactic

Defense Evasion (TA0005)

ATT&CK Technique

Severity

Medium

Description

A signed process side loaded an unsigned DLL that, on a global level, it usually doesn't load.

Attacker's Goals

Attackers may use various methods to execute code from a context of a signed process to avoid detection.

Investigative actions

  • Check if the actor process loaded a suspicious DLL before the alert.
  • Check if the actor process was injected before the alert.
  • Check if the process execution and connections are legitimate.


Globally uncommon and very rare image load from a signed process

Synopsis

ATT&CK Tactic

Defense Evasion (TA0005)

ATT&CK Technique

Severity

Medium

Description

A signed process loaded a DLL that, on a global level, it usually doesn't load.

Attacker's Goals

Attackers may use various methods to execute code from a context of a signed process to avoid detection.

Investigative actions

  • Check if the actor process loaded a suspicious DLL before the alert.
  • Check if the actor process was injected before the alert.
  • Check if the process execution and connections are legitimate.


Globally uncommon image load from an injected thread in a signed process

Synopsis

ATT&CK Tactic

Defense Evasion (TA0005)

ATT&CK Technique

Severity

Low

Description

An injected thread in a signed process loaded a DLL that, on a global level, it usually doesn't load.

Attacker's Goals

Attackers may use various methods to execute code from a context of a signed process to avoid detection.

Investigative actions

  • Check if the actor process loaded a suspicious DLL before the alert.
  • Check if the actor process was injected before the alert.
  • Check if the process execution and connections are legitimate.