tool
Royal S1073
- Type
- malware
- Platforms
- Windows, ESXi
- Created
- 30 March 2023
- Last modified
- 21 October 2025
Royal is ransomware that first appeared in early 2022; a version that also targets ESXi servers was later observed in February 2023. Royal employs partial encryption and multiple threads to evade detection and speed encryption. Royal has been used in attacks against multiple industries worldwide--including critical infrastructure. Security researchers have identified similarities in the encryption routines and TTPs used in Royal and Conti attacks and noted a possible connection between their operators.[1][2][3][4][5]
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S1073
Standing S1073
Reach is how much of ATT&CK this tool touches. Coverage is how well defended each thing it does is, as a median per technique rather than a total — a total would just restate the reach. Each figure is ranked against all 825 ATT&CK software entries only where that population actually spreads. Where most of the population shares one value, a percentile would rank the tie instead of the entity, so the raw value is shown and no rank is claimed.
Reach
66th percentile · 66% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
53rd percentile · 53% of 825 ATT&CK software entries have this many tactics spanned or fewer.
61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.
85% of the population shares a single value across only 8 distinct values, so a percentile here would rank the tie, not the entity.
Coverage
68th percentile · 68% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Detection coverage S1073
358 distinct rules cover the 15 techniques recorded for this tool. The 388 technique-to-rule mappings resolve to 358 distinct rules, because one rule can cover several techniques. 237 Sigma · 121 Splunk.
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