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

Static analysis result for SHA-256 8a6bf241e93cc723…

MALICIOUS

Office (OLE) / .XLS

372.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 7b6cde2e76975491da209318939e3b9d SHA-1: 86e2d907f2c1192624508eb9fa05b8af5d68583e SHA-256: 8a6bf241e93cc723cfc52fb1e0519e3b503f6df84556975fe351015ed46115b6
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 that is designed to execute when the workbook is opened. The macro likely attempts to download a payload from one of the two embedded URLs: https://arpanetwifi.com/6PJHScezZV/lora.html or https://victoriaholidays.co.in/JRO9RjMm/lora.html. The document body also contains text that appears to be part of a command or script, including references to URLs and file operations, further supporting the malicious intent.

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://arpanetwifi.com/6PJHScezZV/lora.html
    • https://victoriaholidays.co.in/JRO9RjMm/lora.html

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xlm_macros.txt
10c536cd22a289c2c3178812e015262cd21f50a74f88f6ddb5171ffd5275b36d		 xlm-macro oletools.olevba.extract_all_macros (XLM macro listing) 8281 bytes

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