Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 ce34ca4a19bb60bd…

MALICIOUS

Office (OOXML)

65.4 KB Created: 2018-09-10 23:38:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2018-10-07
MD5: 8d01202f635d49f65c1429f2995b1b23 SHA-1: 81d7227a19fe2657f3a2f21027d081cc986f1bf4 SHA-256: ce34ca4a19bb60bd37d7e947ed796c23ea464ea52747701651560bb04b279597
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.005 Visual Basic

The sample is an OOXML document containing embedded OLE objects, one of which is identified as an auto-executable payload (likely JavaScript). The document body contains a lure instructing the user to 'ENABLE EDITING', which is a common tactic to bypass macro security settings. This suggests the document is designed to drop and execute a second-stage payload.

Heuristics 4

  • 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
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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.microsoft.com/office/drawing/2015/9/8/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)
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In document text (OOXML body / shared strings)
    • http://ns.adobe.com/xap/1.0/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/photoshop/1.0/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/tiff/1.0/In document text (OOXML body / shared strings)
    • http://ns.adobe.com/exif/1.0/In document text (OOXML body / shared strings)

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 7680 bytes
SHA-256: 17e738f924438a4f746ce0825bc5bb3a81105b311c99b26014fd5751679bc192
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 4124 bytes
SHA-256: c96b716d7f7a0da91e3e2eaac43760638a40d38a6b1d767afad03f0da4fff039
ooxml_oleobject_01.bin ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject2.bin 7680 bytes
SHA-256: c3ba75a1b0a19916706c162f5b98a519e642996a98453464500407fc15de0e39
ooxml_oleobject_01_ole10native_00.bin ole-package OOXML word/embeddings/oleObject2.bin Ole10Native stream: Ole10Native 4112 bytes
SHA-256: ce9d6e7e597d6c665d0b6a10e7a7293ae075ec86d42cd3a4a21fcee35f6df44c
emf_00.emf ooxml-emf OOXML EMF part: word/media/image3.emf 7588 bytes
SHA-256: 439cb49f5265c44e2a7ed6678086613520ceb597df36aee897943f92a081a759
emf_01.emf ooxml-emf OOXML EMF part: word/media/image2.emf 7620 bytes
SHA-256: c91deca5fe5739e1db17e8ff76aba041e8d69c046c25d72ce1e97e945770d7cc

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