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

Static analysis result for SHA-256 c0d98e619a2f9b10…

MALICIOUS

Office (OLE) / .DOCX

194.5 KB Created: 2020-10-22 20:29:00 Authoring application: Microsoft Office Word
MD5: 84add20e94412d21f524b396f13517a3 SHA-1: c33d7d83da658c9f077307da1c83894b74f6b768 SHA-256: c0d98e619a2f9b108045a5619b549a0ee90c530dbbfb72af185868de869e8f0c
240 Risk Score

Malware Insights

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

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an attempt to execute code upon opening. ClamAV identifies this as Doc.Downloader.Logan-9781905-0, a downloader. The embedded URL, though benign according to reputation, is part of the document's structure and was flagged. The primary attack vector is the execution of VBA macros to download and run a secondary payload.

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
9ca879422c3203043eb02bf7332bfccca42d062c85606acaa47b14db718d1f57
vba-macro oletools.olevba.extract_macros (decoded VBA source) 22796 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.