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

Static analysis result for SHA-256 359b302ae9f4feb5…

MALICIOUS

Office (OLE) / .DOC

213.1 KB Created: 2020-09-21 12:09:00 Authoring application: Microsoft Office Word
MD5: 77698678b213a16bb257cd717eb4d375 SHA-1: e9df5f408f0c7f241b2cef5c372b34a7579d4569 SHA-256: 359b302ae9f4feb5ec8db16e0124f6c54a1b94e03b151679b5a04afc960b64f7
280 Risk Score

Malware Insights

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

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that utilizes CreateObject and GetObject calls. This indicates the macro is designed to execute arbitrary code upon opening the document. The ClamAV detection as 'Doc.Downloader.Generic' further supports its malicious nature as a downloader. No specific family could be identified, but the techniques used are common for initial stage malware delivery.

Heuristics 8

  • ClamAV: Doc.Downloader.Generic-9764508-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764508-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
cea30dbaa44bcaf57fbcd15c35be69cfffbad74d3b69c3addc059acf5ad797f9
vba-macro oletools.olevba.extract_macros (decoded VBA source) 19026 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.