Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 3b3d2d3dba28b24d…

MALICIOUS

Office (OOXML)

144.9 KB Created: 2017-10-30 19:42:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2017-11-13
MD5: 34d062d6029d2dbe2230c7f25482c522 SHA-1: c588fddf3a24a7827c2e7fcdf352c4233db37946 SHA-256: 3b3d2d3dba28b24daab58797e33781b25e750b7aa000fe543d1eabdfa7c41caf
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1027 Obfuscated Files or Information

The file contains an embedded OLE object with indicators of a malicious payload, specifically identified as a potential CVE-2026-21514 exploitation. The presence of a packed executable or script within the OLE object, along with shellcode command strings, strongly suggests the document is designed to exploit this vulnerability for client-side execution. No specific malware family is identifiable from the provided evidence.

Heuristics 4

  • Ole10Native package carries executable/script file type high OFFICE_PACKAGE_RISKY_FILE
    OLE Package displayName or fullPath ends in an executable or script-capable extension. Even without UI extension spoofing, embedding a runnable payload inside an Office document is a high-risk delivery pattern.
  • Suspicious extracted artifact high 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.
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object
  • 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://schemas.microsoft.com/office/word/2010/wordprocessingCanvas In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2014/chartexIn 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/2015/wordml/symexIn 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)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 4608 bytes
SHA-256: c41e22bbe0757c8e90b17b1d422a4b36d6012ef05f645273f29217889dcdadb3
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis recovered command string(s): powershell.exe, PowerShell\v1.0\powershell.exe
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 2331 bytes
SHA-256: 41b4c8130577a4d8e7e4650ae2bf01821bc0ca88d67d10d8bdff94874449ef5f
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis recovered command string(s): powershell.exe, PowerShell\v1.0\powershell.exe
emf_00.emf ooxml-emf OOXML EMF part: word/media/image1.emf 5424 bytes
SHA-256: a73e9d368cb1cd3f0dcec9ec47564605d264728d2c3e392262837e793e0618b7

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