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

Static analysis result for SHA-256 bd913e9c89867c5d…

MALICIOUS

Office (OLE) / .DOCX

156.0 KB Created: 2020-12-30 13:16:00 Authoring application: Microsoft Office Word
MD5: 9d18e7069dd57ee1a986e2dc1ee19c4d SHA-1: e4a833ec6638b6990885a14a086296c91e090668 SHA-256: bd913e9c89867c5d668cbc999e4044f62c9efac8f02e6be4066845c3bd2d7171
248 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic T1059.001 PowerShell T1140 Deobfuscate/Decode Files or Information

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for malware delivery. The heuristic firings indicate the use of CreateObject and p-code execution, suggesting the macro is designed to download and execute a second-stage payload. The ClamAV detection as 'Doc.Downloader.EmotetRed02224-9938637-0' further supports this, pointing towards a downloader functionality.

Heuristics 8

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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
56a4885fb35696e61eb89c4193c6dbd09786b2db28cac633c3290a9c612d3393		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6670 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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