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

Static analysis result for SHA-256 d25637cf316cb663…

MALICIOUS

Office (OLE) / .DOCX

170.0 KB Created: 2021-01-22 16:11:00 Authoring application: Microsoft Office Word
MD5: 09fa61e4b5f8dceb2d641849e2b930ad SHA-1: 4b1baae469afa17d470bcc54c3da790226ad0cbf SHA-256: d25637cf316cb6635d17034fb9bfe5334c47f0ef16cc18b178f1a74a48c9b178
240 Risk Score

Malware Insights

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

The file is a malicious DOCX document containing VBA macros. The critical ClamAV detection and high-severity heuristics indicate the presence of a known malware loader. The Document_Open macro is configured to execute automatically, likely to download and execute a second-stage payload. The specific malware family could not be determined from the provided evidence.

Heuristics 7

  • ClamAV: Doc.Malware.Emodldr-10033990-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emodldr-10033990-0
  • 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
5ed4257a756cf59fd0bdd4996a568d11e210a8cb1fd2c78a16a7c0bd2a73f2f9
vba-macro oletools.olevba.extract_macros (decoded VBA source) 16688 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.