Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 2b0743ed4f41980d…

MALICIOUS

Office (OOXML)

177.7 KB Created: 2018-04-27 01:23:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2019-05-10
MD5: 5362d9be25e90cd06ba2b5be83b952f2 SHA-1: 29624929eb5d17fe832da6fa486feb41bd5fcd22 SHA-256: 2b0743ed4f41980de8fec2ed7d1999ed57660c0e792491ea185260fed6f42923
82 Risk Score

Malware Insights

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

The sample leverages the CVE-2017-0199 vulnerability, indicated by the 'OOXML OLE2Link remote loader' heuristic, to fetch a payload from the URL http://bit.ly/loadingpleaswaitrr. This technique is commonly used to deliver secondary malware stages. The presence of external OLE objects further supports this attack vector.

Heuristics 3

  • OOXML OLE2Link remote loader — CVE-2017-0199 related high CVE related CVE_2017_0199_RELATED
    Document contains an o:OLEObject Type=Link whose external oleObject relationship points to a remote URL. This is the OOXML OLE2Link activation shape associated with CVE-2017-0199 delivery, but the local file does not expose URL Moniker bytes or a weaponized extension/content type, so the exact CVE cannot be proven statically.
  • External OLE object relationship high OOXML_EXTERNAL_OLE_OBJECT
    Document contains an oleObject relationship whose target is an external HTTP(S) URL. Office resolves this through OLE/object update paths rather than as a normal user-clicked hyperlink.
  • 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://bit.ly/loadingpleaswaitrrIn document text (OOXML body / shared strings)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
emf_00.emf ooxml-emf OOXML EMF part: docProps/thumbnail.emf 4229152 bytes
SHA-256: bfc8e7cb2b54eca85525f4b7ab0fc8fcfe98eb0c3479629c432ae2fcc733ce5f
emf_01.emf ooxml-emf OOXML EMF part: word/media/image2.emf 13776 bytes
SHA-256: 6489efdb8d30a15096928c4e92efe78cdba01b89b88cef1834dd5a9deb04bc3c

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