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

Static analysis result for SHA-256 71dacaef35ed2f18…

MALICIOUS

Office (OLE) / .DOCX

167.5 KB Created: 2020-09-24 06:41:00 Authoring application: Microsoft Office Word
MD5: fb4649730283b75c7ad1fac24655da35 SHA-1: 48ab13c7a060db0eea6620856cc0f7d9b7b38586 SHA-256: 71dacaef35ed2f18433ea01ee3c634a4b7466598003fe6c2e7b3a1dbb1afa236
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains a VBA macro that is automatically executed upon opening the document. This macro utilizes CreateObject and appears to be designed to download and execute a secondary payload, as indicated by the ClamAV detection and the presence of obfuscated code. The embedded URL, though benign, is noted as part of the document's structure.

Heuristics 6

  • ClamAV: Doc.Trojan.Agent-9765752-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Agent-9765752-0
  • 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
5fc186fdbad9f31c9e64d83153a39dd477b4feadffd069d1417de0a82694326f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18827 bytes

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