Emotet Office (OLE) / .XLSX malware analysis — malicious · 68f7d3c98fa50711

MALICIOUS

Office (OLE) / .XLSX

121.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel

MD5: b199317448550c575ee39660f4b1ac13 SHA-1: 117cdedafe19a606e1416e4afd5fea9de3f9ce1d SHA-256: 68f7d3c98fa507114da5fa1f5ddc7fcf7ecb19bf43ea12d26fbf6705f3b0a6e8

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.003 Windows Command Shell

The sample is identified as Emotet by ClamAV. It contains a Workbook_Open VBA macro that executes a Windows command shell. This command shell then attempts to download and execute a VBScript payload from multiple URLs. The macro also constructs a batch file with obfuscated commands, including a Base64 encoded string that likely decodes to a PowerShell command for downloading additional payloads.

Heuristics 6

ClamAV: Xls.Downloader.Emotet-ab81c42b2bd4747e-9951196-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Xls.Downloader.Emotet-ab81c42b2bd4747e-9951196-0
Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC

Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `faf50200d5a9adeeda00cc1da1bbf8f6abf0317a1e97a58db8ae804ba12ba446`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	13985 bytes

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