Emotet Office (OLE) / .DOCX malware analysis — malicious · 52de3e5c1757f2f9

MALICIOUS

Office (OLE) / .DOCX

151.5 KB Created: 2020-09-22 07:23:00 Authoring application: Microsoft Office Word

MD5: e7357fcf93d1fd8c616e80f71d833b22 SHA-1: c0cf1f06cacc421aa1b087a42ad4f8c0f036c548 SHA-256: 52de3e5c1757f2f963ae355ff3194a0d0dc123cf3ffff1a3ccc0374f8ba73502

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1105 Ingress Tool Transfer

The critical ClamAV heuristic directly identifies the sample as 'Doc.Downloader.Emotet-9765070-0'. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that utilizes CreateObject and GetObject calls. This indicates the macro is designed to run automatically when the document is opened, likely to download and execute a second-stage payload. The presence of a 'macros.bas' file further supports this.

Heuristics 8

ClamAV: Doc.Downloader.Emotet-9765070-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9765070-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
GetObject call high OLE_VBA_GETOBJ

GetObject 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` `37ce3f491be0f3d0a753fc5c7339c798cd89a6843cff6094a48ab180ad94ccb1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16563 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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