Emotet Office (OLE) / .XLS malware analysis — malicious · 47de135097c75813

MALICIOUS

Office (OLE) / .XLS

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

MD5: e534707880011303518700aade7baee6 SHA-1: 7a1e4146cb2da1609b20d908603c2ebbe932d77b SHA-256: 47de135097c75813b92838f2a445a19a3115da0f13fb28b194b4c96d788f7ecf

320 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and multiple high-severity heuristics, including references to PowerShell and Wscript, indicate malicious intent. The Workbook_Open macro automatically executes a PowerShell command that attempts to download and execute a second-stage payload from a list of hardcoded URLs. The reconstructed URL 'http://afieti.com/b/MzAJFbjWWhVz/' is a primary indicator of this malicious activity.

Heuristics 8

ClamAV: Doc.Downloader.EmotetExcel02226-9938630-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetExcel02226-9938630-0
Reference to PowerShell high SC_STR_POWERSHELL

Reference to PowerShell
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.
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 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` `2371f091b169c7918c945b8974b3f60437212f84d1a9d429701826689481f8d8`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6376 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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