Emotet Office (OOXML) / .XLSX malware analysis — malicious · f3df6ce0ed569da7

MALICIOUS

Office (OOXML) / .XLSX

115.1 KB Created: 2015-06-05 18:17:20 UTC Authoring application: Microsoft Excel 12.0000

MD5: 0d9523e0b80c5716ca9783819b2c6c24 SHA-1: cad6b222917ad862c7870978f76cf24e9d5dc8fe SHA-256: f3df6ce0ed569da77973a5997b22a84adaa2e5b25837188ab8a0d22824808e06

200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File

This XLSX file contains a Workbook_Open macro that executes obfuscated PowerShell commands. The script attempts to download and execute a second-stage payload from multiple URLs, including 'http://sumedahonline.com/wp-content/HyzNXJ30XQVBSRH/'. The presence of a Workbook_Open macro and the nature of the payload strongly indicate the Emotet family. The ClamAV detection also confirms this.

Heuristics 5

ClamAV: Xls.Downloader.EmotetExcel02223-9938902-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Downloader.EmotetExcel02223-9938902-0
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One 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.
VBA project inside OOXML medium OOXML_VBA

Document contains vbaProject.bin — VBA macros present

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `df1eb14c222394595c0518b49eec2b55ed9573146c5f1717dedceddd2e199a2b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	12041 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`vbaProject_00.bin` `f42761a1c05f4c77b7f461a1139e8cff366fe5f95e336c7bf8d408b271b6d4d6`	vba-project	OOXML VBA project: xl/vbaProject.bin	42496 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

Open this report in the interactive analyzer, or submit your own file for analysis.