Emotet Office (OLE) / .XLSX malware analysis — malicious · c6f86f38908d6c43

MALICIOUS

Office (OLE) / .XLSX

144.0 KB Created: 2006-09-28 05:33:49 Authoring application: Microsoft Excel

MD5: 1c08429cf290f93d26e25c2e34f0d8e0 SHA-1: 8efca49401edbe9187625cf9fe579266d3ec7000 SHA-256: c6f86f38908d6c430a31a8d59ff0ff829dd7546005560ee589e5de16d134bedb

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1059.003 Windows Command Shell T1204.002 Malicious File

The critical ClamAV detection and multiple high-severity heuristics, including OLE_VBA_MACROS and OLE_VBA_PCODE_AUTOEXEC_EXEC, indicate malicious intent. The Workbook_Open macro triggers the execution of a batch file, 'c:\programdata\tydkjxjd.bat', which in turn uses Wscript.Shell to download and execute payloads from multiple URLs. The reconstructed URL 'http://philiatek.com/wp-content/i6xZ9PESl4QAWL9O/' is a primary indicator of the download source.

Heuristics 7

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

ClamAV detected this file as malware: Doc.Downloader.EmotetExcel02226-9938630-0
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.
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` `022b6ea87e671715cd07f596eceb5d45e85534a367868a0e820c8aa5cb013822`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6734 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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