Emotet Office (OOXML) / .XLSX malware analysis — malicious · f3cece3df85ff8b6

MALICIOUS

Office (OOXML) / .XLSX

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

MD5: 0785278f476ae29e895a2effc67d110e SHA-1: 8a0cfbbfcb65003aac63d81099bd3dc84de537e4 SHA-256: f3cece3df85ff8b6927a5bf3729d863d801b089be1219517899f5ed30f4c1001

200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment T1059.005 Visual Basic

The file is identified as malicious by ClamAV with the signature Xls.Downloader.EmotetExcel02223-9938902-0. Static analysis reveals a Workbook_Open macro that utilizes CreateObject to execute obfuscated PowerShell commands. These commands are designed to download and execute a second-stage payload from multiple URLs, including 'http://sumedhaonline.com/wp-content/HyZNXJ30XQEVBCSRHB/h'. The script also attempts to create batch and VBScript files in the 'c:\programdata\' directory.

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` `f8c8c692b2834b53e9d6bff4bb0c48ebe30794f214e80b3ce6c272db36491287`	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.