MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic for Applications
T1204.002 Malicious File
The sample is an Excel 4.0 (XLM) macro-enabled spreadsheet. It contains an Auto_Open macro that uses dangerous functions, including RUN. The 'SE_ENABLE_LURE' heuristic indicates the document likely contains text prompting the user to enable macros. The extracted URLs suggest the macro is intended to download and execute a second-stage payload.
Heuristics 4
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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.
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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.txt917baaae0e48794e5eb73ae3d5cf93c43110b97da5df3e45bc2f236b5551c875 |
xlm-macro | oletools.olevba.extract_all_macros (XLM macro listing) | 27158 bytes |
Preview scriptFirst 1,000 lines of the extracted script
' 0085 24 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible - D o c u S i g ' 0085 12 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, visible - Doc ' 0085 12 BOUNDSHEET : Sheet Information - Excel 4.0 macro sheet, visible - Doc ' 0085 12 BOUNDSHEET : Sheet Information - worksheet or dialog sheet, visible - Doc ' 0018 31 LABEL : Cell Value, String Constant - _xlfn.BETA.INV hidden len=2 ptgErr *INCOMPLETE FORMULA PARSING* Remaining, unparsed expression: b'\x1d' ' 0018 38 LABEL : Cell Value, String Constant - _xlfn.CEILING.PRECISE hidden len=2 ptgErr *INCOMPLETE FORMULA PARSING* Remaining, unparsed expression: b'\x1d' ' 0018 32 LABEL : Cell Value, String Constant - _xlfn.F.DIST.RT hidden len=2 ptgErr *INCOMPLETE FORMULA PARSING* Remaining, unparsed expression: b'\x1d' ' 0018 23 LABEL : Cell Value, String Constant - built-in-name 1 Auto_Open len=7 ptgRef3d Doc!CS11 ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 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 ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' 002a 2 PRINTHEADERS : Print Row/Column Labels ' 00fd 10 LABELSST : Cell Value, String Constant/ SST ' Sheet,Reference,Formula,Value ' Doc,H206,"_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC(278452452478923.00000000000000000000,425)=_xlfn.CEILING.PRECISE(7842542893242349568.00000000000000000000,42)=TRUNC ... (truncated) |
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