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

Static analysis result for SHA-256 0b089eaf3134af01…

MALICIOUS

Office (OLE) / .DOC

161.5 KB Created: 2020-09-23 21:50:00 Authoring application: Microsoft Office Word
MD5: 6a578b27c179fd25dac815553cd96520 SHA-1: 78123da5739b544127614242ee8f795ab4aa804b SHA-256: 0b089eaf3134af01322c9b778303dd6bebd992f97ce0f6f5b81a06f6e6d85d78
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample is a malicious Microsoft Office document containing VBA macros. The 'Document_open' macro is present and configured to execute automatically, indicating an attempt to run malicious code upon opening. The presence of 'CreateObject' and the ClamAV detection as 'Doc.Downloader' strongly suggest the macro's purpose is to download and execute a secondary payload. 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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