Emotet Office (OOXML) / .XLSX malware analysis — malicious · dc3957e2854d9a50

MALICIOUS

Office (OOXML) / .XLSX

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

MD5: 2a9f876041fac937e971bc854212d55c SHA-1: 9151ec203f2c39d448336a2b31db71641aa0ae76 SHA-256: dc3957e2854d9a50430618c9eae008ebc2ac5cab44698aa9eb889df5cb9d4a02

200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is identified as a malicious Excel downloader by ClamAV, specifically matching the Emotet family. The Workbook_Open macro is present, indicating automatic execution upon opening. The macro's logic, though partially obfuscated, appears to construct and execute commands to download and run a VBScript payload from multiple URLs. The reconstructed URL for the payload is 'http://harperhouseproducts.com/Merch2/ARSf1LIcOauh1rDi/A', and the script attempts to save it as 'c:\programdata\yhjlswle.vbs' and execute it.

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` `6b590780d0e612752a1d0ca24307505b059997cfbaebc3b41bdecab5ef1ca12c`	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.

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