Emotet Office (OOXML) / .XLSX malware analysis — malicious · 4d1a3447690d1a6d

MALICIOUS

Office (OOXML) / .XLSX

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

MD5: 469a1f7d39d3c0118e65584007727c43 SHA-1: 37e61820b5bab9e5ac03cba9f4a751eabc122178 SHA-256: 4d1a3447690d1a6d31196bd38664ee7640c9340757e604c42db84017c098d9de

200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The file is a macro-enabled Excel document identified by ClamAV as Emotet. The Workbook_Open macro is present, indicating automatic execution upon opening. The embedded VBA script attempts to execute a batch command that downloads and runs a VBScript payload from a list of hardcoded URLs. The reconstructed URL is "http://harperhousseproducts.com/Merchandise2/ARSf1LIcOauhH1rDiR/I". This indicates a downloader pattern typical of Emotet.

Heuristics 5

ClamAV: Xls.Downloader.EmotetRed02221-9938910-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Downloader.EmotetRed02221-9938910-0
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` `de7bcbc45ff0a77d05d9af662bacc316e71be11a980e94f6673e556a5dd9d1bc`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	12808 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` `82c8cb0eb95201cf383f657abd8139ad64712cfbb5b1083cb4278ee383cb2dab`	vba-project	OOXML VBA project: xl/vbaProject.bin	37888 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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