Emotet Office (OLE) / .XLSX malware analysis — malicious · c17ec35c04e7920d

MALICIOUS

Office (OLE) / .XLSX

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

MD5: b6a3d213c235391523830664120a11cf SHA-1: f056760e08e952fbad86b93487880c391a203448 SHA-256: c17ec35c04e7920d99efb5efbdfaf59c7c944d4063e63a4426eccccbf82f5596

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample contains VBA macros that leverage `CreateObject` to interact with `Wscript.Shell`, indicating an intent to execute commands. The `Workbook_Open` auto-execution trigger suggests the malicious code runs immediately upon opening the spreadsheet. The reconstructed URL `http://taste-donline.com/cgi-bin/14LG3P2D3rBqBmaYZbO/` is likely used to download and execute a second-stage payload, consistent with Emotet's typical behavior.

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` `0682b1dabb01229c8492cae5e8f124b2428b3f7af0a3adfd56447b0856c75734`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6592 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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