Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 6de09f8d2e95e777…

MALICIOUS

Office (OOXML)

13.8 KB Created: 2019-11-11 09:20:00 UTC Authoring application: Microsoft Office Word 15.0000 First seen: 2020-02-04
MD5: d4af4b695046bd6a39f0250d198563ee SHA-1: d096da9b9c14b8783c5417aef22b79febf825eb1 SHA-256: 6de09f8d2e95e7777277ccec9897b8651f5be281a6e7e2faaa20bc3d4aa4b93d
142 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV with the signature Doc.Downloader.Loda-7570590-0. Heuristics indicate remote template injection and external relationship exploitation, commonly used to download and execute secondary payloads. The presence of a suspicious URL associated with these heuristics further supports this attack pattern.

Heuristics 4

  • ClamAV: Doc.Downloader.Loda-7570590-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Loda-7570590-0
  • Remote template injection high OOXML_REMOTE_TEMPLATE
    Document references a remote template URL (https://uploadvirus.com/uploads/VBRZFQu.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/settings.xml.rels: https://uploadvirus.com/uploads/VBRZFQu.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 https://uploadvirus.com/uploads/VBRZFQu.doc 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)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
emf_00.emf ooxml-emf OOXML EMF part: docProps/thumbnail.emf 4252 bytes
SHA-256: af499a14da1b1e002c52d32f3b9ede60d826ca2612e605fb6395d031dba750e0

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