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

Static analysis result for SHA-256 9e41dcaac0305908…

MALICIOUS

Office (OLE) / .DOCX

213.7 KB Created: 2020-09-21 13:01:00 Authoring application: Microsoft Office Word
MD5: c0332373acb32dea7145e80f6fef78f0 SHA-1: 1fb383e7049a37ca33db6a5833f1a503cb8a565d SHA-256: 9e41dcaac0305908786dd0bfc9200f13a1d7d5f40431c0fb9070f950f0db142b
280 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject and GetObject calls. This indicates an attempt to automatically execute code when the document is opened. The ClamAV detection 'Doc.Downloader.Generic-9764510-0' strongly suggests the macro's purpose is to download and execute a second-stage payload. No specific family could be identified, but the behavior is consistent with a downloader.

Heuristics 8

  • ClamAV: Doc.Downloader.Generic-9764510-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764510-0
  • 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
6a026cf1bf86b484c79a559ac66211fb00449c04a88f93a009af07f69e99e193		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19126 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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