Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 c263f4f335e79c29…

MALICIOUS

Office (OOXML)

555.6 KB Created: 2018-08-22 10:24:00 UTC Authoring application: Microsoft Office Word 15.0000 First seen: 2019-09-30
MD5: b1df440e5dd64ffae9f7e792993f2f4c SHA-1: 1d2c3fcfc19d0f9d5f4dc025e100328aa5487afe SHA-256: c263f4f335e79c299f1605f7a39fc864b60c6721366e2a730292064984ec6918
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is an OOXML document that utilizes remote template injection and external relationships to fetch content from 'https://office.allsafebrowsing.com/fdsw.png'. This indicates an attempt to download and execute a secondary payload, characteristic of a phishing or social engineering attack. The embedded URL and remote template injection heuristics strongly suggest this malicious behavior.

Heuristics 3

  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (https://office.allsafebrowsing.com/fdsw.png) — a common remote-template-injection vector used by Hancitor, Emotet and many phishing campaigns. Word can fetch and apply the remote template; macros in that template may execute depending on Office policy and trust state.
  • External relationship medium OOXML_EXTERNAL_REL
    External target in word/_rels/settings.xml.rels: https://office.allsafebrowsing.com/fdsw.png
  • 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 https://office.allsafebrowsing.com/fdsw.png Remote template reference
    • 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)

Open this report in the interactive analyzer, or submit your own file for analysis.