MALICIOUS
102
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The sample is an Excel file containing Excel 4.0 (XLM) macros, specifically an Auto_Open macro, which is a strong indicator of malicious intent. The document body contains obfuscated strings that reconstruct to the URLs used for downloading the payload. The presence of an 'enable lure' heuristic further supports that the document is designed to bypass security measures and execute the embedded macros.
Heuristics 4
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Excel 4.0 Auto_Open defined name critical OLE_XLM_AUTOOPEN_DEFINEDNAMEoletools 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.
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Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPENWorkbook 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.
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Macro/content-enable lure medium SE_ENABLE_LUREDocument instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
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Embedded URL info EMBEDDED_URLOne 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://mayread.com/aXfFF8qdsV/th.html
- https://tpcsv.neosj.why3s.tw/XjHoDakG/th.html
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txt7758cbebef832a37ce0a327fd7d893202195f03ba9b854edef74b19dbb11678f |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 8349 bytes |
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