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

Static analysis result for SHA-256 606c981a35630090…

MALICIOUS

Office (OLE) / .DOCX

194.2 KB Created: 2020-09-18 21:15:00 Authoring application: Microsoft Office Word
MD5: 02e79e2c985cedae5a0de59ac2a6c4be SHA-1: aa541e6aef43a2ba9b682e40908bcf3a075aa22b SHA-256: 606c981a35630090fe7df6ea2bd78be7c01eb20f5d266ba2432b209e9bf26eb8
202 Risk Score

Malware Insights

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

The sample contains a VBA macro that is automatically executed upon opening the document, as indicated by the Document_Open macro heuristic. This macro utilizes CreateObject to likely download and execute a second-stage payload, a common technique for malware droppers. The ClamAV detection name further supports its classification as a downloader.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763611-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763611-0
  • 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
27aa07f405fa9b3280133cc26ba8fa4c11df7235c7ef1a37f33a0286291c2144		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19156 bytes

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