Ruler
Techniques Used |
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| Domain | ID | Name | Use | |
|---|---|---|---|---|
| Enterprise | T1087 | .003 | Account Discovery: Email Account |
Ruler can be used to enumerate Exchange users and dump the GAL.(Citation: SensePost Ruler GitHub) |
| Enterprise | T1137 | .003 | Office Application Startup: Outlook Forms |
Ruler can be used to automate the abuse of Outlook Forms to establish persistence.(Citation: SensePost Ruler GitHub) |
| .004 | Office Application Startup: Outlook Home Page |
Ruler can be used to automate the abuse of Outlook Home Pages to establish persistence.(Citation: SensePost Ruler GitHub) |
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| .005 | Office Application Startup: Outlook Rules |
Ruler can be used to automate the abuse of Outlook Rules to establish persistence.(Citation: SensePost Ruler GitHub) |
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Groups That Use This Software |
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| ID | Name | References |
|---|---|---|
| G0064 | APT33 |
(Citation: FireEye APT33 Guardrail) (Citation: Microsoft Holmium June 2020) |
References
- SensePost. (2016, August 18). Ruler: A tool to abuse Exchange services. Retrieved February 4, 2019.
- SensePost. (2017, September 21). NotRuler - The opposite of Ruler, provides blue teams with the ability to detect Ruler usage against Exchange. Retrieved February 4, 2019.
- Ackerman, G., et al. (2018, December 21). OVERRULED: Containing a Potentially Destructive Adversary. Retrieved January 17, 2019.
- Microsoft Threat Protection Intelligence Team. (2020, June 18). Inside Microsoft Threat Protection: Mapping attack chains from cloud to endpoint. Retrieved June 22, 2020.
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