tool
S-Type S0085
- Type
- malware
- Platform
- Windows
- Created
- 31 May 2017
- Last modified
- 16 April 2025
S-Type is a backdoor that was used in Operation Dust Storm since at least 2013.[1]
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0085
S-Type primarily uses port 80 for C2, but falls back to ports 443 or 8080 if initial communication fails.3
S-Type has run tests to determine the privilege level of the compromised user.6
S-Type may save itself as a file named msdtc.exe, which is also the name of the legitimate Microsoft Distributed Transaction Coordinator service binary.78
Standing S0085
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
80th percentile · 80% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
68th percentile · 68% 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
64th percentile · 64% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Detection coverage S0085
560 distinct rules cover the 20 techniques recorded for this tool. The 593 technique-to-rule mappings resolve to 560 distinct rules, because one rule can cover several techniques. 387 Sigma · 173 Splunk.
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