Emotet Office (OOXML) / .XLSX malware analysis — malicious · 1abd14d498605654

MALICIOUS

Office (OOXML) / .XLSX

46.5 KB Created: 2006-09-28 05:33:49 UTC Authoring application: Microsoft Excel 12.0000

MD5: 62a7122dbd7e6340fa5fa20681715c6c SHA-1: bcef9ba9cba9d458fd73d5002b1ce8a4a8ea62d2 SHA-256: 1abd14d498605654e20feb59b5927aa835e5c021cada80e8614e9438ac323601

200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file is an Excel macro-enabled document containing a Workbook_Open macro, a common technique for initial execution. The VBA script contains obfuscated code that attempts to download a payload from the URL 'http://visteme.m[x]/shop/wp-ad'. This behavior is consistent with Emotet's typical delivery mechanism, which often involves macro-laden documents acting as downloaders for further stages of infection. The ClamAV detection also explicitly names Emotet.

Heuristics 5

ClamAV: Xls.Downloader.EmotetExcel112100-9910690-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Downloader.EmotetExcel112100-9910690-0
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` `8163168ccf1004e30fe18e0c3086df394975e779412ef3061e4007da68b2887d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	4962 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` `14836a0af1f6d08467055e1cd6edc50ff9ba7c4bc03017467cf9b746fbd1b0ed`	vba-project	OOXML VBA project: xl/vbaProject.bin	24576 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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