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

Static analysis result for SHA-256 da0548eeda47746d…

MALICIOUS

Office (OLE) / .DOC

160.1 KB Created: 2020-09-22 07:35:00 Authoring application: Microsoft Office Word
MD5: d976c9f4bc83e29947f9ffdfbce26bb5 SHA-1: fa753116aa1bf63e58b51723df570ed8e356865b SHA-256: da0548eeda47746d14e3934cf38702cbfd1f17bed1e98db6170fc2194747ecd4
280 Risk Score

Malware Insights

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

The sample contains a malicious VBA macro, specifically a Document_Open macro, which is designed to execute automatically. The macro utilizes CreateObject and GetObject calls, indicating an attempt to run code. The presence of a critical ClamAV detection and high-severity heuristics for VBA auto-execution strongly suggest this document is a malicious dropper. The macro's primary function appears to be executing arbitrary code, likely to download and run a secondary payload.

Heuristics 8

  • ClamAV: Doc.Malware.Ewtz-9765424-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Ewtz-9765424-0
  • 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
a112d95a2b3b8361e272604fc368010c1a607c2cd21f88c20a607d79b8ac6136
vba-macro oletools.olevba.extract_macros (decoded VBA source) 16742 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.