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

Static analysis result for SHA-256 16aafc537262e63d…

MALICIOUS

Office (OLE) / .DOCX

181.5 KB Created: 2020-10-22 12:14:00 Authoring application: Microsoft Office Word
MD5: 54f2148ccc359c6ce608a242cbe69590 SHA-1: 2a4d7a0567a71320098e4b0e924d87bc226759e0 SHA-256: 16aafc537262e63d74f2af32b6c610ffb08d8fb387d0c7ee7f5bf9bf6150df29
202 Risk Score

Malware Insights

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

The sample contains VBA macros, including a Document_Open macro that executes obfuscated code using CreateObject. This behavior is indicative of a downloader, as suggested by the ClamAV detection name 'Doc.Downloader.Logan-9781905-0'. The macro's primary function appears to be downloading and executing a second-stage payload, likely from a remote source, which aligns with the Ingress Tool Transfer technique. The obfuscated nature of the script and the lack of specific indicators for a known family lead to an 'unknown family' classification.

Heuristics 6

  • ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
  • 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
312ef617e63493e61b3bcd46b3231fa9b7aec5a75b005f32edf123ee68ffccb7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18806 bytes

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