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

Static analysis result for SHA-256 460febd9d02330c7…

MALICIOUS

Office (OLE) / .XLSX

85.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 3be22943ff1ff98732f6016cbf2a720c SHA-1: 513f0f10bf8a479fe41b6550295d4820d48055c4 SHA-256: 460febd9d02330c7d9b75d69f3770bc9d9b4512bc0a04921692dc5b17f164763
80 Risk Score

Malware Insights

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

The file contains Excel 4.0 (XLM) macros, indicated by the OLE_XLM_AUTOOPEN and OLE_XLM_DANGEROUS_FN heuristics. The SE_ENABLE_LURE heuristic confirms that the document attempts to trick the user into enabling macros. The embedded URL http://jqilt27xsbz02anaeu.com/fedara.Z is likely used to download a second-stage payload. The XLM macros are likely responsible for executing the download and execution chain.

Heuristics 4

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://jqilt27xsbz02anaeu.com/fedara.Z

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
5b5f51032f9f7e66fe856848b966e8e5cf5be7ddff5cbfd938080f171fc2e925		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 2100 bytes

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