WdmCompanionFilter.sys - Clean (7/100) - DriverShield Analysis
Analysis of WdmCompanionFilter.sys: clean verdict, risk score 7/100. 0 YARA matches. SHA256 85c54a99dd43dc1f. Kernel imports, IOCTL codes, MITRE ATT&CK, and code-signing details.
WdmCompanionFilter.sys - Analysis Report
DriverShield analyzed the Windows kernel driver WdmCompanionFilter.sys and assigned a verdict of Clean with a composite risk score of 7/100, indicating no notable risk signals (0-29 band).
| Verdict | Clean (7/100) |
| YARA matches | 0 |
| File size | 23560 bytes |
| Code-signing signer | Microsoft Windows |
| Analyzed | 2026-03-22 |
| SHA256 | 85c54a99dd43dc1fac7fd2a31288cec7501f795de8fa86857790f4ccd5af7c18 |
| SHA1 | d628ec15d7044d41586a52d5128ed48947706281 |
| MD5 | a6c92a5f2982ebb8788e0690c19048c4 |
The full report includes the kernel Import Address Table, extracted IOCTL dispatch codes, YARA rule names, MITRE ATT&CK technique mapping, and the Authenticode certificate chain. See the analysis methodology for how the risk score is computed, or browse the driver database for related samples.
Related:
Other drivers signed by Microsoft Windows · Browse the full driver database · CVE library · code signing atlas · BYOVD research index · security glossary
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