Windows Event Log was cleared using wevtutil.exe

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
ATT&CK Tactic	Impact (TA0040)
ATT&CK Technique	Inhibit System Recovery (T1490)
Severity	Low

Description

A command-line utility was used to clear the Windows Event Log. It may be used to delete logs to cover the tracks of the malicious activity, making it harder to perform analysis.

Attacker's Goals

Delete logs to cover tracks of the malicious activity, making it harder to perform analysis.

Investigative actions

Check whether the executing process is benign and if this was a desired behavior as part of its normal execution flow.

Variations

Security Event Log was cleared using wevtutil.exe

Synopsis

Field	Value
ATT&CK Tactic	Impact (TA0040)
ATT&CK Technique	Inhibit System Recovery (T1490)
Severity	High

Description

A command-line utility was used to clear the Windows Event Log. It may be used to delete logs to cover the tracks of the malicious activity, making it harder to perform analysis.

Attacker's Goals

Delete logs to cover tracks of the malicious activity, making it harder to perform analysis.

Investigative actions

Check whether the executing process is benign and if this was a desired behavior as part of its normal execution flow.

A Sensitive Windows Event Log was cleared using wevtutil.exe

Synopsis

Field	Value
ATT&CK Tactic	Impact (TA0040)
ATT&CK Technique	Inhibit System Recovery (T1490)
Severity	Medium

Description

A command-line utility was used to clear the Windows Event Log. It may be used to delete logs to cover the tracks of the malicious activity, making it harder to perform analysis.

Attacker's Goals

Delete logs to cover tracks of the malicious activity, making it harder to perform analysis.

Investigative actions

Check whether the executing process is benign and if this was a desired behavior as part of its normal execution flow.