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

Static analysis result for SHA-256 7643f4bf376b2b5f…

MALICIOUS

Office (OLE) / .DOCX

133.0 KB Created: 2022-02-10 21:48:00 Authoring application: Microsoft Office Word
MD5: 6075a587e21b974356ed0422b6cf3d83 SHA-1: ef34181e89bc6c7b982e86b9a0d4626c40c547e3 SHA-256: 7643f4bf376b2b5f4ff5322e478b638c0c79cbb2d776579880914b416306267b
222 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample contains VBA macros that utilize WScript.Shell and CreateObject to write a VBScript file to the temporary directory. This script then proceeds to download a DLL payload from a hardcoded URL, suggesting a downloader or droppper functionality. The presence of WScript.Shell and Shell() calls strongly indicates malicious intent.

Heuristics 6

  • 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
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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
2a4b7a9453a41d1e74a791913cd1d677dd2bc8ac9dc253b0ce990f342242912a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4633 bytes

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