MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.005 Visual Basic
T1059.001 PowerShell
The sample is an Excel file containing Excel 4.0 macros, specifically an Auto_Open macro. The document body contains a lure instructing the user to enable editing and content, which is a common tactic for macro-based malware. The presence of the Auto_Open macro and the lure strongly suggests the intent is to execute malicious code upon opening the document. No specific family could be identified, but the technique is consistent with macro-based downloaders.
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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XLM Auto_Open with dangerous formula APIs critical OLE_XLM_DANGEROUS_FNExcel 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.
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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
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txt088fd6b0593805a3d5f798ca3f32e4dba54d3eb092917819d39f97bd18a7aac6 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 3573 bytes |
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