MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Service Execution: Visual Basic
T1059.001 Command and Scripting Interpreter: PowerShell
T1204.002 Malicious Link: Malicious File
The critical heuristic OLE_XLM_DANGEROUS_FN indicates the presence of dangerous Excel 4.0 macro functions, specifically the RUN function, within an Auto_Open macro. The DOC BODY section reveals that the macro concatenates strings to form URLs, such as 'https://sweetzone.co/js/XVK/'. This strongly suggests the macro's purpose is to download and execute a second-stage payload from these URLs. The use of Auto_Open and concatenated URLs points to a downloader or droppper functionality.
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.txtb4f0a647cf6176132ebc9ecde0dbe63bae14d0fc3c1b3805926fc56fef0b0f6a |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 7650 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.