Detection rules › Kusto Query Language
Identify SysAid Server web shell creation
'This query looks for potential webshell creation by the threat actor Mercury after the sucessful exploitation of SysAid server. Reference: https://www.microsoft.com/security/blog/2022/08/25/mercury-leveraging-log4j-2-vulnerabilities-in-unpatched-systems-to-target-israeli-organizations/'
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access | T1190 Exploit Public-Facing Application |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Security-Auditing | 4663 | An attempt was made to access an object. |
| Security-Auditing | 4688 | A new process has been created. |
Stages and Predicates
Stage 1: source
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Stage 2: union
union of 3 branches