MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The sample is an Excel file containing Excel 4.0 macros, specifically an Auto_Open macro, which is a known technique for executing malicious code upon opening. The macro is designed to prompt the user to enable macros, a common lure. The extracted macro code includes formulas that appear to construct a command to download and execute a file from the URL 'gifrun'. The presence of 'run dll3wlog28dzzmi02spfin.com/mrch.' and 'IEUDLK.CJF' suggests a payload download and execution attempt.
Heuristics 4
-
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.
-
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.txt863a7bb815321e718cf72457cad13093189daa8618070d2109cd7db4b08c1fa8 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 2431 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.