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

Static analysis result for SHA-256 a9e3ce1226a67889…

MALICIOUS

Office (OOXML) / .DOC

140.5 KB Created: 2021-01-27 17:21:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: 3d73729bfaec43777953b94ab3a05e01 SHA-1: 3f7364731a507116a7cd1c6ec3ee544512513141 SHA-256: a9e3ce1226a67889b68f6a1f9f389b94b2649e84cff874e84789cde9f40ae4cf
200 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample is an OOXML document containing VBA macros, specifically triggering a Document_Open macro. This macro likely uses CreateObject to download and execute a second-stage payload, as indicated by the ClamAV detection name 'Doc.Downloader'. No specific URLs were extracted, but the presence of VBA macros and the auto-execution behavior strongly suggest a downloader pattern.

Heuristics 6

  • ClamAV: Doc.Downloader.BlueWord12211-9918950-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.BlueWord12211-9918950-0
  • 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.microsoft.com/office/drawing/2014/chartex
    • 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/2015/wordml/symex
    • 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
c6733e8f0acd12272a22d991ed0d999f4e828fb2634bcc73991d37bf9ef63367		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 2251 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
00bde97ce84fa08ee74da99964a141a96235982cb51f3ba418ad56c45d3ff2bd		 vba-project OOXML VBA project: word/vbaProject.bin 113664 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

Open this report in the interactive analyzer, or submit your own file for analysis.