NOOPLDR can use control flow flattening to help hide malicious code.23
tool
NOOPLDR S9025
- Type
- malware
- Platform
- Windows
- Created
- 17 April 2026
- Last modified
- 12 May 2026
NOOPLDR is a shellcode loader with XML/C# and DLL versions that has been used by MirrorFace to load HiddenFace.[1]
12
Techniques54th pct
6
Tactics53rd pct
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 S9025
NOOPLDR can insert junk code to obfuscate malicious payloads.56
NOOPLDR can inject decrypted payloads into processes including wuauclt.exe., rdrleakdiag.exe, and tabcal.exe.7
NOOPLDR can delete a file containing configuration instructions after use.8
NOOPLDR can discover the device ID and hostname from the targeted machine to use for encryption keys.9
Standing S9025
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
Techniques1254th pct
54th percentile · 54% of 825 ATT&CK software entries have this many Enterprise techniques or fewer.
Tactics653rd pct
53rd percentile · 53% of 825 ATT&CK software entries have this many tactics spanned or fewer.
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 / technique9med
Detection coverage S9025
594 distinct rules cover the 12 techniques recorded for this tool. The 607 technique-to-rule mappings resolve to 594 distinct rules, because one rule can cover several techniques. 413 Sigma · 181 Splunk.
11 covered by at least one rule1 with no coverage594 distinct rules in total
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