Malicious Office (OOXML) / .DOC — malware analysis report

Static analysis result for SHA-256 1a9ff3d95bf54ced…

MALICIOUS

Office (OOXML) / .DOC

104.2 KB Created: 2020-06-01 18:18:00 UTC Authoring application: Microsoft Office Word 15.0000
MD5: 19de0547e1165da472f3502838f1eed7 SHA-1: db489763c2c0a1f4d0472c82f028457939884722 SHA-256: 1a9ff3d95bf54ced73dfda74086b83594b36a39e31b137400f9bdd0cd9e16950
140 Risk Score

Malware Insights

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

The OOXML document contains VBA macros, specifically a Document_Open macro, which is a common technique for initial execution. The presence of CreateObject calls suggests the macro attempts to interact with the system or download additional payloads. No specific URLs or executable artifacts were directly extracted, but the macro's presence and auto-execution capability indicate a malicious intent to compromise the system.

Heuristics 5

  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA project inside OOXML medium OOXML_VBA
    Document contains vbaProject.bin — 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
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2010/wordml
    • http://schemas.microsoft.com/office/word/2012/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInk
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShape

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
2c30b863852bf4932e2ad74eabd5fb9b8e3649db3990e516cdf50089cc5892f3		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 1902 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
vbaProject_00.bin
a3372bf236f726c5dab7ec5d12772f2691bcbbc6b4f591c3a26b868db0673fef		 vba-project OOXML VBA project: word/vbaProject.bin 11776 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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