Win.Dropper.NetWire-7947909-0 — Office (OOXML) malware analysis

Heuristics 6

• ClamAV: Win.Dropper.NetWire-7947909-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Win.Dropper.NetWire-7947909-0
• Ole10Native package drops an auto-executable payload critical OFFICE_PACKAGE_RISKY_FILE
  OLE 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.
• Embedded OLE object medium OOXML_OLE_OBJECT
  Document contains an embedded OLE object
• Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
  One 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.
• Payload URL recovered from embedded OLE object (15 URLs) info OOXML_EMBEDDED_OBJECT_URL
  An 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).
• Embedded URL info EMBEDDED_URL
  One 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)

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