To establish persistence, Truvasys adds a Registry Run key with a value "TaskMgr" in an attempt to masquerade as the legitimate Windows Task Manager.4
tool
Truvasys S0178
- Type
- malware
- Platform
- Windows
- Created
- 16 January 2018
- Last modified
- 25 April 2025
Truvasys is first-stage malware that has been used by PROMETHIUM. It is a collection of modules written in the Delphi programming language. [1] [2] [3]
2
TechniquesBottom 7%
3
TacticsBottom 21%
1
Threat groupunranked
0
CampaignsNone recorded
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0178
Standing S0178
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
Techniques2Bottom 7%
7th percentile · 93% of 825 ATT&CK software entries have more Enterprise techniques.
Tactics3Bottom 21%
21st percentile · 79% of 825 ATT&CK software entries have more tactics spanned.
Threat group161% tie · 22 values
61% of the population shares a single value across only 22 distinct values, so a percentile here would rank the tie, not the entity.
Campaigns085% tie · 8 values
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
Rules / technique25med60th pct
60th percentile · 60% of 825 ATT&CK software entries have this many detection rules per technique or fewer.
Tests / technique12med
Detection coverage S0178
50 distinct rules cover the 2 techniques recorded for this tool. 43 Sigma · 7 Splunk.
2 covered by at least one rule50 distinct rules in total
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