MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1203 Exploitation for Client Execution
The file contains Excel 4.0 macros, specifically an Auto_Open defined name, which is a critical finding indicating potential automatic execution of malicious code upon opening. The presence of dangerous formula APIs like RUN further increases the risk. While the exact payload is not discernible from the provided evidence, the mechanism strongly suggests an attempt to execute arbitrary code.
Heuristics 3
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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.
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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.
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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.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_macros.txt |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 6652 bytes |
SHA-256: 632d6ecaaa90a0ac6552a3f97a1677245093d9c466edad31934b1ea67f599e13 |
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Preview scriptFirst 1,000 lines of the extracted script
' 0085 14 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible - Sheet ' 0085 19 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, visible - heeetkIbYc ' 0018 23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d Sheet!E183 ' 0018 22 LABEL : Cell Value, String Constant - bEEDWKG len=0 ' 0018 26 LABEL : Cell Value, String Constant - BgEJDVzzsvZ len=0 ' 0018 25 LABEL : Cell Value, String Constant - cKbkLwXGGN len=0 ' 0018 23 LABEL : Cell Value, String Constant - cYrZbsmi len=0 ' 0018 21 LABEL : Cell Value, String Constant - dBKtKW len=0 ' 0018 25 LABEL : Cell Value, String Constant - OBXLZXqSGZ len=0 ' 0018 27 LABEL : Cell Value, String Constant - ofiDrCQiPDjt len=0 ' 0018 20 LABEL : Cell Value, String Constant - pcAim len=0 ' 0018 20 LABEL : Cell Value, String Constant - QatTc len=0 ' 0018 24 LABEL : Cell Value, String Constant - qESLStPTW len=0 ' 0018 23 LABEL : Cell Value, String Constant - qGgNuAfq len=0 ' 0018 22 LABEL : Cell Value, String Constant - sGsPREl len=0 ' 0018 21 LABEL : Cell Value, String Constant - TjmhaC len=0 ' 0018 22 LABEL : Cell Value, String Constant - UidSnJo len=0 ' 0018 20 LABEL : Cell Value, String Constant - VGdXj len=0 ' 0018 25 LABEL : Cell Value, String Constant - vMTEOCcpAc len=0 ' 0018 21 LABEL : Cell Value, String Constant - wCpRGZ len=0 ' 0018 26 LABEL : Cell Value, String Constant - wdgysVzqyWH len=0 ' 0018 24 LABEL : Cell Value, String Constant - WLRzJTLpP len=0 ' 0018 24 LABEL : Cell Value, String Constant - xjTUUWHIC len=0 ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 00fd 10 L ... (truncated) |
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