Hildegard has modified /etc/ld.so.preload to overwrite readdir() and readdir64().2
tool
Hildegard S0601
- Type
- malware
- Platforms
- Linux, Containers, IaaS
- Created
- 7 April 2021
- Last modified
- 11 April 2024
Hildegard is malware that targets misconfigured kubelets for initial access and runs cryptocurrency miner operations. The malware was first observed in January 2021. The TeamTNT activity group is believed to be behind Hildegard. [1]
Enterprise ATT&CK only. Any Mobile or ICS rows on the same ATT&CK page are not carried.
MITRE reference S0601
Standing S0601
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
90th percentile · 90% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
94th percentile · 94% 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
25th percentile · 75% of 825 ATT&CK software entries have more detection rules per technique.
Detection coverage S0601
868 distinct rules cover the 27 techniques recorded for this tool. The 896 technique-to-rule mappings resolve to 868 distinct rules, because one rule can cover several techniques. 503 Sigma · 365 Splunk.
Loading detections...
| Select | Title | Description | Category | Status | Event | Product | MITRE ATT&CK | CVEs | Severity | Author | Created | Updated | ID | Refs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
© 2026 The MITRE Corporation. ATT&CK® and D3FEND™ data reproduced with permission. SigmaHQ detection rules licensed under DRL 1.1. attack.mitre.org · d3fend.mitre.org · CAR analytics licensed under Apache 2.0 · car.mitre.org