Emotet Office (OOXML) / .XLSX malware analysis — malicious · 296c5a191e1d6599

MALICIOUS

Office (OOXML) / .XLSX

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

MD5: d3cc1bc5b45ac6710a50992071e77a21 SHA-1: 7800038933927b664b601d29cec1e8ac51dde7cd SHA-256: 296c5a191e1d659921834e088b6f8ad7ec8431e48efe688d281b17d61bb7924a

200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for Workbook_Open macros and CreateObject calls strongly indicate malicious intent. The embedded VBA script contains obfuscated PowerShell commands that attempt to download and execute payloads from multiple URLs. Specifically, the script reconstructs the following download URLs: 'http://sumedhaonline.com/wp-content/HyzNXJ30XQEVcBRH/', 'http://divachintexamples.com/wp-includes/WWhWRs8KvNzFm6/', 'http://hotelalandmalabo.com/1520/bUdhEPdf/', and 'http://shwenantawin.com/copma/XTnZii02vfg'. It also references batch and VBScript files in the programdata directory, 'c:\programdata\jledshf.bat' and 'c:\programdata\tghklsd.vbs', likely for execution or staging.

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` `62eca4d342288d1a764f8eb27881ba27f99d4373ec8901a4aa8f149c107e2a58`	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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