MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.002 Spearphishing Attachment
The file is identified as malicious by ClamAV with the signature Xls.Dropper.Agent-7730377-0. Static analysis revealed the presence of Excel 4.0 (XLM) macros, specifically an Auto_Open macro that utilizes dangerous formula APIs, including the RUN function. This indicates the macro is designed to execute arbitrary commands or launch other executables, a common technique for delivering secondary payloads.
Heuristics 4
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ClamAV: Xls.Dropper.Agent-7730377-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Dropper.Agent-7730377-0
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XLM Auto_Open with dangerous formula APIs high 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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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 http://ns.adobe.com/xap/1.0/
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.microsoft.com/photo/1.0/
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txte47106be1fe6d478b2b5fe59b6967ea335801c7849c521ad4ad8ea1916dcbde0 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 325122 bytes |
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