Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 d88753eaf17fac2a…

MALICIOUS

Office (OOXML)

11.5 KB Created: 2018-03-07 09:39:00 UTC Authoring application: Microsoft Office Word 15.0000 First seen: 2020-05-25
MD5: c5b8a6dbc18202ae9a7f2003536cd3c5 SHA-1: b64d9b5636efb5ad74875cb15b7d169e09acac5c SHA-256: d88753eaf17fac2ac9331d87866a6c7c6c41b5de89dd5ff8a250846fec90ac17
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample exhibits critical heuristic firings for remote template injection and external relationships, both pointing to the URL http://groseryhomicandelectronicptusdy2market.duckdns.org/office/invoice_22119.doc. ClamAV detection as Doc.Downloader.Redline-9972754-0 strongly suggests this file is a downloader for a second-stage payload. The embedded URL is the primary indicator of compromise.

Heuristics 4

  • ClamAV: Doc.Downloader.Redline-9972754-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Redline-9972754-0
  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (http://groseryhomicandelectronicptusdy2market.duckdns.org/office/invoice_22119.doc) — 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 high OOXML_EXTERNAL_REL
    External target in word/_rels/webSettings.xml.rels: http://groseryhomicandelectronicptusdy2market.duckdns.org/office/invoice_22119.doc
  • 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://groseryhomicandelectronicptusdy2market.duckdns.org/office/invoice_22119.docRemote template reference

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