Emotet Office (OLE) / .DOCX malware analysis — malicious · 9bef99c8e12327de

MALICIOUS

Office (OLE) / .DOCX

171.5 KB Created: 2020-10-21 13:56:00 Authoring application: Microsoft Office Word

MD5: ea9d55d055ab303f51323c60ccecc0ec SHA-1: e1c91e9a7370969c26ed98197b1088ad76e4ccca SHA-256: 9bef99c8e12327ded16455d788af6804370777cf4cdf3d260f60e189cec14401

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 identifies this file as 'Doc.Dropper.EmotetUpdate1020-9778523-0', strongly suggesting an Emotet variant. The presence of a Document_Open VBA macro that uses CreateObject, along with the 'vba-macro' artifact, indicates the macro is designed to execute malicious code. This macro likely downloads and executes a second-stage payload, a common Emotet delivery technique.

Heuristics 7

ClamAV: Doc.Dropper.EmotetUpdate1020-9778523-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.EmotetUpdate1020-9778523-0
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` `113d36c64715b3a3694b52821b832bd3a24df7013a1eebeaaceb4571875cbc4c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	23319 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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