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

Static analysis result for SHA-256 71ddc60db3a46b45…

MALICIOUS

Office (OLE) / .DOCX

167.7 KB Created: 2020-09-24 06:41:00 Authoring application: Microsoft Office Word
MD5: ec6b732dec02aeba0e5802d330e69efd SHA-1: 4c6fc3c7ddcfa726ac9455706e22edb8f4a5d35f SHA-256: 71ddc60db3a46b45d9528b760fe7eb5b20dc47607f74af0d8e24bfa825ea2c68
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate or Reverse-Engineer Malicious JavaScript

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for malware delivery. The macros utilize CreateObject and obfuscated code, suggesting an attempt to download and execute a secondary payload. ClamAV also detected this file as 'Doc.Trojan.Agent-9765752-0', further indicating malicious intent.

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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