Emotet Office (OLE) / .DOCX malware analysis — malicious · a21b445e7541a779

MALICIOUS

Office (OLE) / .DOCX

167.6 KB Created: 2020-09-24 20:34:00 Authoring application: Microsoft Office Word

MD5: 9bc301152565307247ec385eb90b5ec6 SHA-1: 84ea86d287f92738272b03e07acf3529d5a1177f SHA-256: a21b445e7541a779604d506673053ddf5d7abcb729ccfbe09ac48d1aea602609

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics indicate this is a malicious document. Specifically, the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' and 'OLE_VBA_CREATEOBJ' firings, along with the presence of a 'Document_Open' macro, suggest the execution of VBA code upon opening. The document body, though heavily obfuscated, appears to be constructing a PowerShell command. This macro likely downloads and executes a second-stage payload, consistent with Emotet downloader behavior.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9765780-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9765780-0
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` `20065c1f06a22de094d8fc279802a5adedc919206be7ae0d9cd9ee9d315ea30b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25868 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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