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

Static analysis result for SHA-256 4a90656c2ea7a348…

MALICIOUS

Office (OLE) / .DOC

586.5 KB Created: 2022-02-07 08:37:00 Authoring application: Microsoft Office Word
MD5: 86559ff6d0ca2edb4a11c4c8e4607af7 SHA-1: 4d4da580350ceedb99ba4a0b4c54f72ec89378cf SHA-256: 4a90656c2ea7a34846a49401ee8ef8b662898cd51996af40c622863c0567d8a0
62 Risk Score

Malware Insights

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

The sample contains a VBA macro that is triggered by the Document_Open event. This macro constructs a URL by concatenating strings to 'kukumar1s.r' and then attempts to open a document with a password. The macro's primary intent appears to be downloading and executing a second-stage payload from the constructed URL, which is a common technique for malware delivery.

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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