MALICIOUS
224
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
T1129 Shared Content
The file is identified as malicious by ClamAV as Win.Dropper.NetWire-7947909-0. Static analysis revealed an embedded OLE object containing an executable payload, strongly indicating exploitation of CVE-2026-21514. The embedded object is designed to drop an auto-executable file, likely for further malicious activity.
Heuristics 6
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ClamAV: Win.Dropper.NetWire-7947909-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Win.Dropper.NetWire-7947909-0
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Ole10Native package drops an auto-executable payload critical OFFICE_PACKAGE_RISKY_FILEOLE Package displayName or fullPath ends in a directly auto-executable extension (a runnable binary or a script the default shell host runs on double-click). Embedding such a payload inside an Office document has no benign authoring use — it is a malware-delivery dropper.
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Embedded OLE object medium OOXML_OLE_OBJECTDocument contains an embedded OLE object
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Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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Payload URL recovered from embedded OLE object (15 URLs) info OOXML_EMBEDDED_OBJECT_URLAn embedded OLE object (xl/word/ppt embeddings) carries a next-stage download URL in its Ole10Native/Package stream — stored literally (incl. UTF-16) or base64-encoded — which the package-level URL sweep does not see. Surfaced as an IOC; self-validating (only real payload hosts).
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://ocsp.thawte.com0 In document text (OOXML body / shared strings)
- http://ts-ocsp.ws.symantec.com07In document text (OOXML body / shared strings)
- http://ocsp.digicert.com0NIn document text (OOXML body / shared strings)
- http://ocsp.digicert.com0CIn document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/word/2010/wordprocessingCanvasIn document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/word/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/word/2010/wordmlIn document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/word/2012/wordmlIn document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/word/2010/wordprocessingGroupIn document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/word/2010/wordprocessingInkIn document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn document text (OOXML body / shared strings)
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In document text (OOXML body / shared strings)
- http://ns.adobe.com/pdf/1.3/In document text (OOXML body / shared strings)
- http://ns.adobe.com/xap/1.0/In document text (OOXML body / shared strings)
- http://www.openssl.org/support/faq.htmlIn document text (OOXML body / shared strings)
- http://crl.thawte.com/ThawteTimestampingCA.crl0In document text (OOXML body / shared strings)
- http://ts-aia.ws.symantec.com/tss-ca-g2.cer0In document text (OOXML body / shared strings)
- http://ts-crl.ws.symantec.com/tss-ca-g2.crl0In document text (OOXML body / shared strings)
- http://crl3.digicert.com/sha2-assured-cs-g1.crl05In document text (OOXML body / shared strings)
- http://crl4.digicert.com/sha2-assured-cs-g1.crl0KIn document text (OOXML body / shared strings)
- https://www.digicert.com/CPS0In document text (OOXML body / shared strings)
- http://cacerts.digicert.com/DigiCertSHA2AssuredIDCodeSigningCA.crt0In document text (OOXML body / shared strings)
- http://cacerts.digicert.com/DigiCertAssuredIDRootCA.crt0In document text (OOXML body / shared strings)
- http://crl4.digicert.com/DigiCertAssuredIDRootCA.crl0In document text (OOXML body / shared strings)
- http://crl3.digicert.com/DigiCertAssuredIDRootCA.crl0OIn document text (OOXML body / shared strings)
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
ooxml_oleobject_00.bin |
ooxml-ole-object | OOXML embedded OLE part: word/embeddings/oleObject1.bin | 2926080 bytes |
SHA-256: 70286883d333cfa0a4b9f319d570c2973241e5f5812d3bed35a74b5e392facb5 |
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Detection
ClamAV:
Win.Dropper.NetWire-7947909-0
Obfuscation or payload:
likely
Static shellcode analysis found candidate code region(s). Indicators: NOP sled, SC_GETPC_CALL, SC_GETPC_CALL
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ooxml_oleobject_00_ole10native_00.bin |
ole-package | OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native | 2900532 bytes |
SHA-256: c9378c1796c3a45b629de4c26b09ea2be82ecae07ebeb923bc19882fbd0da41b |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Static shellcode analysis found candidate code region(s). Indicators: NOP sled, SC_GETPC_CALL, SC_GETPC_CALL
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emf_00.emf |
ooxml-emf | OOXML EMF part: word/media/image2.emf | 5456 bytes |
SHA-256: 1699696492f4a3f0d084402bc9b39848789e4742dc4db8618fdb04f9a2285711 |
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