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

Static analysis result for SHA-256 00844bafd3dc1431…

MALICIOUS

Office (OLE) / .DOCX

190.0 KB Created: 2020-10-22 16:39:00 Authoring application: Microsoft Office Word
MD5: 535066df3b2d9ad87c366528478f9740 SHA-1: de08ce98aa4307b4b2a444a8ff366c87763cea72 SHA-256: 00844bafd3dc1431f9661d11e58935bcce4d3b622801cf77904fa51330a84b85
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample contains a VBA macro that is automatically executed upon opening the document, as indicated by the 'Document_Open' macro and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic. The macro uses 'CreateObject', a common technique for initiating malicious actions. While the script is heavily obfuscated, its presence and the associated heuristics strongly suggest it's designed to download and execute a secondary payload, consistent with downloader malware.

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
e27d29142f52c9bbf22d80d41e42b63f47a37f20e4370d5fd51155547914517e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 22921 bytes

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