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

Static analysis result for SHA-256 e72f2275ff02e1f4…

MALICIOUS

Office (OLE) / .DOCX

132.5 KB Created: 2022-02-10 21:55:00 Authoring application: Microsoft Office Word
MD5: 445daf7005e6a341b12775abf45cfa0c SHA-1: 13fec6b2d596d2ca92507b9b0ce4ed8e4bab4698 SHA-256: e72f2275ff02e1f4f479e115a97d17735a8ab1852afc4194558fbf56fb619957
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1059.003 Windows Command Shell

The sample contains VBA macros that utilize WScript.Shell to create and execute a VBScript file in the temporary directory. This script is designed to download a DLL payload from a hardcoded URL, decrypt it, and save it to the temporary directory. The presence of WScript.Shell and CreateObject calls, along with the shell() function, strongly indicates a malicious intent to download and execute further stages.

Heuristics 7

  • 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
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
18489db5e76e847147a63e0e2d8f588e2940a516251b3009bf0522490500c37d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4336 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 shell/COM execution token(s).

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