Emotet Office (OLE) / .DOCX malware analysis — malicious · 6b876e7e2ab51b43

MALICIOUS

Office (OLE) / .DOCX

199.7 KB Created: 2020-09-17 11:51:00 Authoring application: Microsoft Office Word

MD5: 3deb001a25629e403b994626154c894d SHA-1: d2bd3f0a000207e5ff312ae4a25c202181a48b33 SHA-256: 6b876e7e2ab51b43855fc6f61be843893b4f75176e3ba28160330afeb9eb51e0

204 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. The ClamAV detection name 'Doc.Dropper.EmotetWinMob0920-9636503-0' strongly suggests the Emotet family. The VBA script appears to be obfuscated but is designed to execute a payload, likely a downloader for a second-stage artifact, which is a common Emotet behavior. The presence of a 'macros.bas' file further supports the macro-based execution.

Heuristics 7

ClamAV: Doc.Dropper.EmotetWinMob0920-9636503-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.EmotetWinMob0920-9636503-0
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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Suspicious extracted artifact info 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.
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` `c3286e68fa3d09f0094cde843da13ffd003c4769e3d53082fc234c009c46407c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19881 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 20 long base64-like blob(s).

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