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

Static analysis result for SHA-256 4d58f9bc9cb9c712…

MALICIOUS

Office (OLE) / .DOCX

154.1 KB Created: 2020-09-14 17:52:00 Authoring application: Microsoft Office Word
MD5: 4e51cf913229690dc3698e2d7bb64834 SHA-1: b9675b7b56c8e09a7df28b1d859822b59f5018f8 SHA-256: 4d58f9bc9cb9c71282fc9003acfff87afebaa80186b02cbd42d663d20eb5c43a
240 Risk Score

Malware Insights

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

The sample contains VBA macros, specifically a Document_Open auto-execution macro, which is a common technique for initiating malicious activity. The heuristic firings indicate the use of CreateObject and p-code execution, suggesting the macro is designed to download and execute a second-stage payload. While the specific payload and delivery mechanism are not fully detailed in the provided evidence, the presence of these indicators strongly points to a macro-based malware delivery. The embedded URL, though benign, was noted.

Heuristics 7

  • ClamAV: Doc.Malware.Generic-9760287-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-9760287-0
  • 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
1c1ac6d8019d3317e1fd9360b916f40afe347161c1d653ef40242d0284d5107c
vba-macro oletools.olevba.extract_macros (decoded VBA source) 18510 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.