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

Static analysis result for SHA-256 eb2199eb89e22975…

MALICIOUS

Office (OLE) / .XLS

165.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: f96b9d35f0edd4b8d896eb193cf1bf36 SHA-1: 6d60801d8349286e0634b88cca5e54453eca9e9c SHA-256: eb2199eb89e22975e2242d3f0eeaf5914a1ada5cd53183e82cb0f6e2ac3b96e9
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1059.001 PowerShell

The file is an Excel 4.0 macro-enabled spreadsheet. Heuristics indicate the presence of an Auto_Open macro that uses dangerous formula APIs, specifically the RUN function, to execute arbitrary code. The embedded URL 'http://www.chipmania.it/mails/open' is likely used to download and execute a second-stage payload. The document body text is minimal and does not provide further context beyond the URL.

Heuristics 3

  • XLM Auto_Open with dangerous formula APIs high OLE_XLM_DANGEROUS_FN
    Excel 4.0 macro sheet contains an Auto_Open / Auto_Close entry and dangerous XLM formula APIs that can invoke programs, write files, or transfer control without VBA.
  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
  • 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://www.iec.ch
    • http://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/photoshop/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
f72194058b5d1131257adb8047540ae2ca5a2f68446b9907dc98eadcb54b4687		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 1999 bytes

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