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

Static analysis result for SHA-256 a1a6d0894d959f22…

MALICIOUS

Office (OLE) / .DOC

177.0 KB Created: 2020-09-18 22:05:00 Authoring application: Microsoft Office Word
MD5: 381e2ab5974fdfbff1c507747ac17e12 SHA-1: caf54d8965db7cc1120a9b5e420c8913ed74942e SHA-256: a1a6d0894d959f22ac18750f7ff3e1e5f3fff33b50bbbf2428b3a7c295c54175
240 Risk Score

Malware Insights

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

The sample is a malicious DOC file containing a Document_Open VBA macro. This macro is designed to execute automatically upon opening the document, leveraging CreateObject to likely download and execute a secondary payload. The ClamAV detection 'Doc.Downloader.Generic-9763712-0' further supports its role as a downloader. No specific family could be identified, but the technique is consistent with macro-based malware delivery.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9763712-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763712-0
  • 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
f035cd1023dade0b5d5e126cbab797fd9aeb292e781548b39fa794a9356990ee
vba-macro oletools.olevba.extract_macros (decoded VBA source) 19197 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.