Formbook — Office (OOXML) malware analysis

Static analysis result for SHA-256 37e95e09066965f9…

MALICIOUS

Office (OOXML)

366.2 KB Created: 2013-03-22 19:59:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2020-09-15
MD5: 75e4e69c64f6264ac6cdef0d3b4ed8f7 SHA-1: 6f0ccfc13bdb93c3334a4d2d24110dd279e50b83 SHA-256: 37e95e09066965f9077b52e11adbaea7db9f009cab42f99673741043225303af
62 Risk Score

Malware Insights

Formbook · confidence 95%

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as a downloader for the Formbook malware family. While no specific malicious URLs or scripts were extracted, the detection signature strongly suggests the document's purpose is to download and execute a second-stage payload. This aligns with common tactics for delivering malware via spearphishing attachments.

Heuristics 2

  • ClamAV: Win.Exploit.CVE_2013_3906-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Exploit.CVE_2013_3906-1
  • 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.openxmlformats.org/markup-compatibility/2006 In 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.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/2006/wordmlIn document text (OOXML body / shared strings)

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