Emotet Office (OOXML) / .XLSM malware analysis — malicious · 3b54d27fc56406a1

MALICIOUS

Office (OOXML) / .XLSM

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

MD5: 70f026f8d7112840bbe6397e600f2f4c SHA-1: c02f1638b14c86804a5a6486857ef8e7f8deca41 SHA-256: 3b54d27fc56406a1701c7d60540424974cfcafd8354895d2fbb4988db3e4a996

200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is an XLSM document containing VBA macros, specifically a Workbook_Open macro, which is a common delivery mechanism for Emotet. The script attempts to download and execute a second-stage payload from multiple URLs. The reconstructed URL is "http://harperhouseproducts.com/Merch2/ARSf1LIcOauhH1rDiR/". The script also attempts to write a VBS file to 'c:\programdata\yhjlswle.vbs' and a BAT file to '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` `80f13c59a499de12f604552681f2afff9ab34adf67e1822f044ad95756021fc5`	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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