Emotet Office (OLE) / .DOCX malware analysis — malicious · f597bca2ebef9eaa

MALICIOUS

Office (OLE) / .DOCX

102.3 KB Created: 2020-09-29 17:52:00 Authoring application: Microsoft Office Word

MD5: b2e2578c4593de6bde7ac1af32fff3ef SHA-1: 8f53f007e9baa29a277d05350be81f7cebd68b8f SHA-256: f597bca2ebef9eaaf692c33d4b2e5aeb17867bb7748ffe9ee8699ead5521982a

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9769356-0'. Static analysis revealed VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject', indicating an attempt to execute code. The presence of these elements strongly suggests a downloader functionality, characteristic of the Emotet family, which typically downloads and executes further payloads. The document body content appears to be obfuscated or corrupted, providing no direct clues to the lure.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9769356-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9769356-0
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` `77f0fc2bd0d5c985be4d4cb3501afb191ffadc98be204ef2c40c091585c5d90a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10395 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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