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

Static analysis result for SHA-256 0185c23ef468c062…

MALICIOUS

Office (OLE) / .DOC

162.4 KB Created: 2020-09-23 21:50:00 Authoring application: Microsoft Office Word
MD5: d2b63585a566c69757f639d184c9be0f SHA-1: 93b3a507efd6dbf5467ed63c0a8adf59c819a857 SHA-256: 0185c23ef468c062bc446ffc87e7af495c49e991d0a24c67634d8f0cd3d8bf8b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The sample contains a VBA macro that is automatically executed upon opening the document, as indicated by the Document_Open heuristic. This macro uses CreateObject to likely download and execute a second-stage payload. The ClamAV detection name 'Doc.Downloader' further supports this behavior. No specific family could be identified.

Heuristics 6

  • ClamAV: Doc.Downloader.Mryv-9765643-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Mryv-9765643-0
  • 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.
  • 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
73025ddea320f2b071eb07bf918853ac1d6bc1ed1503c9c9400830c79e2af1db		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19787 bytes

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