Emotet Office (OLE) / .XLSX malware analysis — malicious · ec21bad95f53348b

MALICIOUS

Office (OLE) / .XLSX

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

MD5: 041cb604d64604c47c98542b202b2ad5 SHA-1: 5bd38bd8ab4cfd814e480ab88a103791f69962e2 SHA-256: ec21bad95f53348bcd82cd0c90b0b5280670df4c53fbe1a4aca69b6dcb0a5740

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1566.002 Spearphishing Attachment T1059.005 Visual Basic

The critical ClamAV detection and high-severity heuristics for VBA macros, CreateObject, and Workbook_Open indicate a malicious macro-enabled document. The embedded VBA script utilizes obfuscated PowerShell commands to download and execute a second-stage payload. Specifically, it reconstructs the following URLs for payload retrieval: 'http://store.uxdummmit.com/wp-admin/VfgBSQRA7Z/', 'http://glouren tal.com/wp-admin/f12eAKG7nS6I/', 'http://candiese.bimteractive.org/1g94ngo/2n7wJoPuPDaXp/', and 'http://bachilleatoropociclo.org/1g94ngo/2n7wJoPuPDaXp/'. The script also references paths for batch and VBScript files, suggesting further stages of execution.

Heuristics 7

ClamAV: Doc.Downloader.EmotetExcel02222-9938901-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetExcel02222-9938901-0
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` `df1eb14c222394595c0518b49eec2b55ed9573146c5f1717dedceddd2e199a2b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	12041 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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