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

Static analysis result for SHA-256 ba64d69516da5815…

MALICIOUS

Office (OLE) / .DOCX

35.0 KB Created: 2023-12-13 21:41:00 Authoring application: Microsoft Office Word
MD5: 3dfddb91261f5565596e3f014f9c495a SHA-1: 50d2f2f3b9a861401141d6ffd9cbe27c6b27761b SHA-256: ba64d69516da5815369a03f25e567a3edf1473e6da5884b1485f3142d334767f
220 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample contains VBA macros that utilize Shell() and CreateObject() calls, indicating an attempt to execute external code. The heuristic 'OLE_VBA_PCODE_AUTOEXEC_EXEC' specifically points to an auto-execution routine within the VBA macros, likely designed to download and run a payload. The embedded URL http://www.shieldwise.online/UpdateCheck.exe is flagged as unknown and is highly suspicious in this context, suggesting it serves as the download source for the second-stage malware. The ClamAV detection further confirms its malicious nature as a dropper.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Dropper.Agent-6412232-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6412232-1
  • 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://www.shieldwise.online/UpdateCheck.exe
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
561077c4e4da68c397deab437b2cfc5656896e0adfafc816ef06aa120fa24541		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 961 bytes

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