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

Static analysis result for SHA-256 18896dac772e9ad9…

MALICIOUS

Office (OLE) / .DOCX

212.3 KB Created: 2020-10-16 06:01:00 Authoring application: Microsoft Office Word
MD5: dee4dda78a384302aa04d3859a0097a6 SHA-1: c26673ab1575de6d7b6ce205cda98f628faed36b SHA-256: 18896dac772e9ad99bd1080bcebd45aaf22ff546565d958122097f51fb78e73c
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution

This document contains a VBA macro that is automatically executed upon opening, as indicated by the Document_Open and CreateObject firings. The macro is heavily obfuscated but appears to be designed to download and execute a second-stage payload. The ClamAV detection as 'Doc.Downloader.EmotetRed02224-9938637-0' strongly suggests a downloader functionality.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
3863408a8bdeee0ec9a7fd53b63559adf9564fc8373ad4e3bb83f95fe3393045		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15324 bytes

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