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

Static analysis result for SHA-256 c3843a536f778e2e…

MALICIOUS

Office (OLE) / .DOCX

182.0 KB Created: 2020-10-22 12:14:00 Authoring application: Microsoft Office Word
MD5: 284704d919c7dcacde18ca85aaff1167 SHA-1: f103d49cee8e34c21ceff8d4235da08e7716f86c SHA-256: c3843a536f778e2e2d8bc6af3e608c492db004886b7a0cdcc32fe491ab6b43e1
240 Risk Score

Malware Insights

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

The file contains VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. ClamAV identifies this as Doc.Downloader.Logan-9781905-0, indicating its function as a downloader. The macro likely downloads and executes a second-stage payload, which is a common technique for malware distribution.

Heuristics 7

  • ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject 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
312ef617e63493e61b3bcd46b3231fa9b7aec5a75b005f32edf123ee68ffccb7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18806 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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