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

Static analysis result for SHA-256 ca486599da26db6a…

MALICIOUS

Office (OLE) / .XLS

367.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 603a96dbbf21f8db1b98ea9d7268cb51 SHA-1: c4a27853b1ba03312b8ba56e6c01ef2534b9f9e9 SHA-256: ca486599da26db6ac332d54345eb41a0701a09363cea9f8c32453a44d6fc5407
102 Risk Score

Malware Insights

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

The sample is an Excel 4.0 (XLM) macro-enabled spreadsheet. It contains an Auto_Open macro, which is a common technique for executing malicious code upon opening the document. The document body and extracted URLs indicate an attempt to trick the user into enabling macros, likely to download and execute a second-stage payload from the URLs: https://stateoftheartacademy.com.br/E4V8njAb2/ue.html and https://dsafarm.com/h03itpGP/ue.html.

Heuristics 4

  • Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAME
    oletools recovered an Auto_Open / Auto_Close entry from an Excel 4.0 macro sheet. The raw BIFF name can be tokenized or partially opaque to byte-string checks, but the recovered macro listing confirms the workbook has an XLM auto-execution entry.
  • 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 https://stateoftheartacademy.com.br/E4V8njAb2/ue.html
    • https://dsafarm.com/h03itpGP/ue.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
e808156aa76369abc653ef5da0e4637a11444d74c8ce4e627b8f3942d60b3178		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 8209 bytes

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