Emotet Office (OLE) / .DOCX malware analysis — malicious · fc12a0cb8aa8a5c2

MALICIOUS

Office (OLE) / .DOCX

185.0 KB Created: 2020-10-21 05:24:00 Authoring application: Microsoft Office Word

MD5: 880762cfdbac35435da62bd59a27395e SHA-1: 4e51a29f88fe67d2cfc548524c44241d6ebba77f SHA-256: fc12a0cb8aa8a5c24347b300a665ec9486fc955b18b81810019889333939a65c

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for OLE_VBA_MACROS, OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC indicate the presence of a malicious VBA macro designed to execute automatically upon opening the document. This macro is likely responsible for downloading and executing a second-stage payload, a common characteristic of Emotet droppers. The document body content is heavily obfuscated and unreadable, providing no direct clues to the lure.

Heuristics 7

ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
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` `c2d782ff362afeab0ff3ffdb3997adeebbc3bedc56fb1ea2722e18a99469723b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	20637 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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