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

Static analysis result for SHA-256 8b60c4cfccabce58…

MALICIOUS

Office (OLE) / .DOC

586.5 KB Created: 2022-02-07 08:37:00 Authoring application: Microsoft Office Word
MD5: 52118cbd93f510b2f7997d6b3e9ce08f SHA-1: 0825c5fbabadac36e72875e6d8336d7bda063719 SHA-256: 8b60c4cfccabce58fbbe269bb15a85bc6b496bcbda728ed17f97495ff3e4198c
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The sample contains a VBA macro that executes upon opening the document, as indicated by the Document_Open heuristic. The macro attempts to construct a URL by concatenating strings to form 'https://kukumar1s.ru/'. It then proceeds to open a document with a password, likely to download and execute a second-stage payload. The presence of the Document_Open macro and the URL construction strongly suggest a malicious intent to deliver further malware.

Heuristics 3

  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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
6b5c1ee22f7e3179b00a2f7fc16299b597afa3cf93f9808506dec474f2d0e7aa		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1244 bytes

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