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

Static analysis result for SHA-256 ad588eaa915b7d4d…

MALICIOUS

Office (OLE) / .DOCX

266.5 KB Created: 2020-10-28 13:40:00 Authoring application: Microsoft Office Word
MD5: 78173d832cd650d9f190f2dd013207c7 SHA-1: 9fde7c38b54b1cff8d5cfebceab3531432f53e96 SHA-256: ad588eaa915b7d4dcfdf7b26676ad8ab591db9fba7252d22b3b211cd0cf8dbe1
240 Risk Score

Malware Insights

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

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro that utilizes CreateObject. This indicates an attempt to execute code upon opening the document. The ClamAV detection as 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download and execute a secondary payload. No specific family could be identified, but the technique is common for initial access.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
  • 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
04f0b14197f396c9b03f7b934599b1b01d62a486cd3090375b867094895917c9
vba-macro oletools.olevba.extract_macros (decoded VBA source) 18531 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.