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

Static analysis result for SHA-256 0ee32e3ea3d83da9…

MALICIOUS

Office (OLE) / .DOCX

91.0 KB Created: 2017-12-01 18:11:00 Authoring application: Microsoft Office Word
MD5: 9f7c280b20d021f0a0984d1ad0aeba41 SHA-1: 1ec6b3e3ba10c07468df40b4707a1d4b86490aed SHA-256: 0ee32e3ea3d83da9df6317d7c8c539f0f3622af82ef242d74fdca1e5d4ee427f
302 Risk Score

Malware Insights

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

The sample contains VBA macros that leverage WScript.Shell and CreateObject to write obfuscated content to a VBS file and a text file within a custom directory structure. The Document_Open macro initiates this process, indicating an attempt to download and execute a second-stage payload. The obfuscated content within the VBA macros likely decodes to malicious script or commands.

Heuristics 8

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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
    • http://schemas.openxmlformats.org/officeDocument/2006/bibliography
    • http://schemas.openxmlformats.org/officeDocument/2006/customXml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
4d29df57b6a15ed6cd9104c44b353228045b5d61777e8511030a7a4091c544bf		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3051 bytes

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