MALICIOUS
102
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.005 Visual Basic
T1204.002 Malicious File
The sample is an Excel file containing Excel 4.0 (XLM) macros, including an Auto_Open entry, which is a strong indicator of malicious intent. The document body and extracted URLs suggest a lure to download a second-stage payload from either signifysystem.com or fcventasyservicios.cl. The presence of an 'enable lure' heuristic further supports that the document is designed to prompt the user to enable macros to execute the malicious code.
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://signifysystem.com/ceg7AX7oN0o/ue.html
- https://fcventasyservicios.cl/k60jvjcT/ue.html
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txtc7d4d2bead8580d5104e88300cefa6eb3ebffd421d1191db8449676bfb792ff2 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 8209 bytes |
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