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

Static analysis result for SHA-256 5550d9e16cad7854…

MALICIOUS

Office (OLE) / .DOCX

172.7 KB Created: 2020-09-17 10:17:00 Authoring application: Microsoft Office Word
MD5: 409c5e15311dc90b97c9137a0bf81bcc SHA-1: a244ebbf024d08440f089125347f1f52abb85254 SHA-256: 5550d9e16cad7854633fe0ca4c7315a5595cdb78147360f022c916fb27890aa6
240 Risk Score

Malware Insights

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

The sample contains a Document_Open VBA macro that utilizes CreateObject, indicating an attempt to execute code. The presence of VBA macros and the ClamAV detection as 'Doc.Downloader.Generic' strongly suggest this document is designed to download and execute a second-stage payload. The macro's auto-execution and use of CreateObject are key indicators of this malicious intent.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9762674-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9762674-0
  • 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
9ba8ec3966e91d175acafd30ec3438df19c84a3d5c19c35fd5e40d1b639faa28
vba-macro oletools.olevba.extract_macros (decoded VBA source) 20635 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.