Maldade — Office (OOXML) malware analysis

Static analysis result for SHA-256 10f2d8766e66aaf7…

MALICIOUS

Office (OOXML)

15.8 KB Created: 2021-05-16 13:52:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2021-05-26
MD5: d6847b219ecd2200cc54f20640aa6aba SHA-1: f1518913ddcd231158f021e8a0db44ba961be7e8 SHA-256: 10f2d8766e66aaf71e9ad183249c7ded3e9e987a180a24e1266bd0744a0c769c
142 Risk Score

Malware Insights

Maldade · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The presence of VBA macros and a critical ClamAV detection for 'Doc.Trojan.Maldade-10036492-0' strongly suggests malicious intent. The VBA macro, though simple, is indicative of a downloader or initial execution vector for a more complex payload. The Maldade family is known for its use of such techniques to deliver further malware.

Heuristics 3

  • ClamAV: Doc.Trojan.Maldade-10036492-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Maldade-10036492-0
  • VBA project inside OOXML medium OOXML_VBA
    Document contains a VBA project — VBA macros present
  • 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.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)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 40 bytes
SHA-256: 6b26a80de8d277c621ed1b1f6085c2e75914969f4645422ebdff161b3f68329f
Preview script
First 1,000 lines of the extracted script
Sub Hello()
Dim X
X=MsgBox("Hello VBS")
vbaProject_00.bin vba-project OOXML VBA project: word/vbaProject.bin 17920 bytes
SHA-256: eee61aee489b3375664e7752400b928ab8f6e2a00fc0a3b794bde2924b06c132
Detection
ClamAV: Doc.Trojan.Maldade-10036492-0
Obfuscation or payload: unlikely

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