MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 PowerShell
T1059.001 PowerShell
T1204.002 Malicious File
The Excel 4.0 macro sheet contains an Auto_Open macro that executes a PowerShell command. This command downloads a file named 'pd.bat' from the URL https://cutt.ly/3js2g8s and saves it to the temporary directory. The macro then proceeds to make the file hidden and system, execute it, and finally remove it. The use of Excel 4.0 macros and the download/execution chain are indicative of a downloader malware.
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.txtbe0b4e22bd17f39a986b86889dea41be9808bc18be534cb86dc5b95e1117496d |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 1484 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.