Emotet Office (OOXML) / .XLSX malware analysis — malicious · a7830fe00307548f

MALICIOUS

Office (OOXML) / .XLSX

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

MD5: ccd0000c5a6538b7f619321b0122c13a SHA-1: 0f40767eac5eaefff7665559926b91b5ace2d93f SHA-256: a7830fe00307548fb36168145dc82b26bb2ae77e00c1cdb6ee3615bde34af560

200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is identified as malicious by ClamAV, specifically as an Emotet downloader. The Workbook_Open macro is present, indicating automatic execution upon opening. The macro attempts to download and execute a second-stage payload using a reconstructed URL: "http://harperhouseproducts.com/Merchan2/ARSf1LIcOuAh1rDiH/". It also writes two files to disk: c:\programdata\yhjlswle.vbs and c:\programdata\ughldskbhn.bat.

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` `9eb1ee44bc7db2f079a0e7e66c9fce19ffcc7844afb564e1db97887e5be44253`	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.