Emotet Office (OLE) / .DOCX malware analysis — malicious · b2da3622cd82e573

MALICIOUS

Office (OLE) / .DOCX

162.8 KB Created: 2020-09-14 06:44:00 Authoring application: Microsoft Office Word

MD5: ac964af2df5bcbcffe15b6324391628e SHA-1: cd0824e55a32b9da437d37c6727602ce9c4a1aaf SHA-256: b2da3622cd82e573c60eb2623e5d96e08956c72cb2fd0c53a126e732b376a0ef

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for OLE_VBA_MACROS, OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate malicious VBA macro execution. The presence of a 'Document_Open' macro that uses 'CreateObject' is a common pattern for Emotet. The extracted document body, though heavily obfuscated, contains patterns suggestive of PowerShell command construction, likely for downloading and executing a second-stage payload. The ClamAV signature 'Doc.Malware.Emotet-9762310-0' directly attributes this to the Emotet family.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9762310-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9762310-0
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` `94aa0eae3715e5e4c777d8559a3d12a3d055d6c09f9bd5aa9415cdba60070681`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25226 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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