Malicious Office (OLE) / .DOCX — malware analysis report

Static analysis result for SHA-256 dc22d99fa3a69c87…

MALICIOUS

Office (OLE) / .DOCX

215.9 KB Created: 2020-09-21 07:35:00 Authoring application: Microsoft Office Word
MD5: 87c8bc3bb187f4417dbd56454ab47d1c SHA-1: 9575c8f8c131aee6fa039cb423195504c4fbbe82 SHA-256: dc22d99fa3a69c87670c71cbc507b1653370e7aaf7a476244463a2ce20770f05
280 Risk Score

Malware Insights

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

The file is a malicious Office document containing VBA macros. The presence of a Document_Open macro, CreateObject, and GetObject calls, along with VBA p-code auto-execution, indicates that the macros are designed to run automatically upon opening the document. ClamAV detection as 'Doc.Downloader.Generic-9764473-0' strongly suggests a downloader functionality, likely to fetch and execute a second-stage payload.

Heuristics 8

  • ClamAV: Doc.Downloader.Generic-9764473-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764473-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • 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 macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a72546be4835befa0cd5934bb3d180228dbaffbae6f31f70f11c03f05171f092		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19249 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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