Unusual process accessed web browser cookies

Cortex XDR Analytics Alert Reference by data source

Product
Cortex XDR
Last date published
2024-12-03
Category
Analytics Alert Reference
Order
data source

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

1 Day

Required Data

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

Detection Modules

Detector Tags

Credentials Grabbing Analytics

ATT&CK Tactic

Credential Access (TA0006)

ATT&CK Technique

Steal Web Session Cookie (T1539)

Severity

Informational

Description

An unusual process has accessed a web browser's session cookie store.

Attacker's Goals

Obtain access to or hijack sessions to websites stored in the web browser's cookies.

Investigative actions

  • Determine whether it is legitimate for the process to access session cookies directly.
  • Analyze the process/application that accessed the cookie store.
  • Check for any other suspicious actions that were performed by the process.
  • Look for unusual access to resources using credentials cached in the web browser/cookie store.

Variations

Unusual unsigned process accessed web browser cookies

Synopsis

ATT&CK Tactic

Credential Access (TA0006)

ATT&CK Technique

Steal Web Session Cookie (T1539)

Severity

Low

Description

An unusual process has accessed a web browser's session cookie store.

Attacker's Goals

Obtain access to or hijack sessions to websites stored in the web browser's cookies.

Investigative actions

  • Determine whether it is legitimate for the process to access session cookies directly.
  • Analyze the process/application that accessed the cookie store.
  • Check for any other suspicious actions that were performed by the process.
  • Look for unusual access to resources using credentials cached in the web browser/cookie store.