MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Service Execution: Service Execution
T1204.002 Malicious File: Malicious File
The critical heuristics OLE_XLM_AUTOOPEN and OLE_XLM_DANGEROUS_FN indicate the presence of Excel 4.0 macros with an Auto_Open entry point, specifically utilizing the RUN function. The extracted URLs from the document body are likely part of a download chain. The script's intent is to execute these URLs, which is a common method for delivering secondary payloads.
Heuristics 3
-
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.
-
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.
-
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.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txtb2124f09a0fec7faeef42f88c68da164b6a9b84efed16f528c7ac11c7695b4b9 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 7646 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.