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

Static analysis result for SHA-256 1760841f07035052…

MALICIOUS

Office (OLE) / .DOCX

235.4 KB Created: 2020-10-28 21:52:00 Authoring application: Microsoft Office Word
MD5: e03298e145b6775018f2e64c867f5ffa SHA-1: 4efa329110a74feee1623221d0e85825c847bb48 SHA-256: 1760841f07035052ab44e29d6f475c361b1b2c60b6faeb2419abb262bbfd0e26
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate or Obfuscate Malicious Code

The sample is a Microsoft Office document containing a malicious VBA macro, as indicated by multiple high and critical heuristic firings including 'OLE_VBA_MACROS', 'OLE_VBA_DOCOPEN', and 'CLAMAV_DETECTION'. The macro is designed to execute automatically upon opening the document, likely to download and run a secondary payload. The obfuscated nature of the VBA code and the presence of a macro file named 'macros.bas' suggest an attempt to hide malicious activity.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
  • 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
5aa3aad97a35a46de04017100e8aadce01daec323c971d220dcadfd4335841c1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18882 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.