Emotet Office (OOXML) / .XLSX malware analysis — malicious · ab78cbb7c1329e2a

MALICIOUS

Office (OOXML) / .XLSX

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

MD5: 1fc0aded39bbc362b1cadbd18ab86937 SHA-1: 066b971bc57c19b43821d7d7aca33f49fab907c4 SHA-256: ab78cbb7c1329e2ae04a260e09c50e0775a2e7a879c298384ce557ff3da9831a

200 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with the signature 'Xls.Downloader.EmotetExcel02223-9938902-0'. Static analysis reveals a Workbook_Open macro, indicating automatic execution upon opening. The embedded VBA script contains obfuscated PowerShell commands that reconstruct the following URLs for downloading a second-stage payload: 'http://sumedahoonlin.com/wp-content/hyezNXJ300XOVcBS RH/', 'http://divachintexile.com/wp-incudes/WHwWRKs8KvzNfM6/', 'http://hotelalandmalabo.com/1520/bUdhEpdf/', and 'http://shwenantawin.com/copma/XTnZJii02vfg'. 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` `a8371d95b7232191748db6ba2d699f830c99f30a7e72a2f6c356216e254e8e76`	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.