Unusual process accessed a web browser history file

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	XDR Agent with eXtended Threat Hunting (XTH)
Detector Tags	Sensitive Information Stealing Analytics
ATT&CK Tactic	Discovery (TA0007), Collection (TA0009)
ATT&CK Technique	Browser Information Discovery (T1217), Data from Local System (T1005), Automated Collection (T1119)
Severity	Low

Description

An unusual process has accessed a web browser history file.

Attacker's Goals

Obtain access to the user's browsing history and steal their contents.

Investigative actions

• Determine whether it is legitimate for the process to access web browser history.
• Analyze the process/application that accessed the file.
• Check for any other suspicious actions that were performed by the process.
• Look for unusual access of resources using credentials that may be stored in the above file.

Variations

Unusual process accessed a web browser history file on Linux

Synopsis

Field	Value
ATT&CK Tactic	Discovery (TA0007), Collection (TA0009)
ATT&CK Technique	Browser Information Discovery (T1217), Data from Local System (T1005), Automated Collection (T1119)
Severity	Low

Description

An unusual process has accessed a web browser history file.

Attacker's Goals

Obtain access to the user's browsing history and steal their contents.

Investigative actions

• Determine whether it is legitimate for the process to access web browser history.
• Analyze the process/application that accessed the file.
• Check for any other suspicious actions that were performed by the process.
• Look for unusual access of resources using credentials that may be stored in the above file.