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

Static analysis result for SHA-256 d60d78bff124eef2…

MALICIOUS

Office (OLE) / .DOC

78.0 KB Created: 2021-09-01 10:56:00 Authoring application: Microsoft Office Word
MD5: 1edf6c586b08af1a476e662d8de7d66d SHA-1: ee561912f98319b16eea42beaa3a91935f0c8827 SHA-256: d60d78bff124eef29afea9a4324f307627fa46bbccd6fa65c8329b967ddeb82a
182 Risk Score

Malware Insights

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

The sample is a malicious OLE document containing VBA macros. The 'document_open' macro is configured to execute automatically when the document is opened. It writes a string to a file named '1.hta' and then executes it using 'explorer.exe'. The content written to '1.hta' is derived from the document's body, with specific strings replaced. This indicates a downloader or dropper functionality, aiming to execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.BlueLogoW09210-9891682-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.BlueLogoW09210-9891682-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
d414180509917b22565e9c3cf7a1cc7f2cb4a004e2ed1b0aff091e7ebec95325		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 685 bytes

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