Synopsis
Activation Period |
14 Days |
Training Period |
30 Days |
Test Period |
N/A (single event) |
Deduplication Period |
1 Day |
Required Data |
|
Detection Modules |
Identity Threat Module |
Detector Tags |
|
ATT&CK Tactic |
|
ATT&CK Technique |
|
Severity |
Low |
Description
A user removed an Exchange malware filter policy, which may prevent the detection of malware.
Attacker's Goals
An attacker is attempting to evade detection.
Investigative actions
- Follow further actions done by the account.
- Verify that the configuration change was expected.
- Look for signs that the user account is compromised (e.g. abnormal logins, unusual activity).
- Investigate if any other security policies have been changed or removed.
- Monitor for signs of malware in future messages.