Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 8b3d62ca4b4f547e…

MALICIOUS

Office (OOXML)

96.6 KB Created: 2017-04-17 00:16:00 UTC Authoring application: Microsoft Office Word 15.0000 First seen: 2017-06-27
MD5: aadbc82cf79a798fd962f74446634ed8 SHA-1: 4fccee2fcc978f1895dd08f5ab629028b567c93c SHA-256: 8b3d62ca4b4f547e2ad90ee5b16e3a08b35b0aa4b27a01db47d6d90e63cac9c9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is an Office document containing an embedded OLE object. Heuristics indicate this object is a risky file package that drops an auto-executable payload, specifically identified as a VBS file. This suggests the document is designed to trick the user into opening it, leading to the execution of a malicious script or program.

Heuristics 3

  • 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
  • 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.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.iec.chIn document text (OOXML body / shared strings)
    • http://ns.adobe.com/xap/1.0/In document text (OOXML body / shared strings)
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In document text (OOXML body / shared strings)
    • http://purl.org/dc/elements/1.1/In document text (OOXML body / shared strings)
    • http://ns.adobe.com/xap/1.0/mm/In document text (OOXML body / shared strings)
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#In document text (OOXML body / shared strings)
    • http://ns.adobe.com/photoshop/1.0/In document text (OOXML body / shared strings)

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject2.bin 8192 bytes
SHA-256: 0957f09c339a57c19ec0d4152ead554b8af034321f5310a5d7cc55b175fe27a3
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML word/embeddings/oleObject2.bin Ole10Native stream: Ole10Native 5436 bytes
SHA-256: 27b9a2ecbb56d983021a7401666510f2564d6534901899c378f685479487ea8d
emf_00.emf ooxml-emf OOXML EMF part: word/media/image3.emf 5392 bytes
SHA-256: 68e15a2e05cf32ffac076f7fb2a4f3ed66554fbd4b5bb35e1203180821b3a5fa
emf_01.emf ooxml-emf OOXML EMF part: word/media/image2.emf 5312 bytes
SHA-256: b436a949f68fcc7fadcde807212ab0d62d8ad4766a57ef57c1cc3b4b45642221
emf_02.emf ooxml-emf OOXML EMF part: word/media/image1.emf 5304 bytes
SHA-256: 5f3a2c4f466ca5b7b51e4564ad3162dec96e9c9423d5483301671f2b130aaf32

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