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

Static analysis result for SHA-256 8cfb715353dbbbc6…

MALICIOUS

Office (OLE) / .DOC

143.1 KB Created: 2021-01-05 07:06:00 Authoring application: Microsoft Office Word
MD5: b65dfb31fa424584160c388da6a063a6 SHA-1: b0167ddce3fc7580b29f19d4e82e1aaa69edacc4 SHA-256: 8cfb715353dbbbc60a56ac17fcd804e76515221f520154f994a76e8909a403f7
180 Risk Score

Malware Insights

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

The sample contains VBA macros, specifically a Document_Open auto-execution macro, which is designed to run automatically when the document is opened. High-confidence heuristics indicate the use of CreateObject and p-code execution, suggesting the macro attempts to download and execute a second-stage payload. The embedded URL, though benign in reputation, is present within the document body.

Heuristics 6

  • 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
d3b097275af7032178b4c001ca8fbb5e7bf0f68c090585141a79334ce9cb0a60		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10798 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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