Emotet Office (OLE) malware analysis — malicious · d1b6dd32cf8a5aff

MALICIOUS

Office (OLE)

139.6 KB Created: 2020-10-15 20:30:00 Authoring application: Microsoft Office Word

MD5: 41e126ba6142fe15aecf9b81440c3244 SHA-1: ce9c9eec25949e16dd36e51f1f9b7a9018ae4f2a SHA-256: d1b6dd32cf8a5aff83fcbfdcae6e3ef17d7fdee013c76b2bbff8d6afadad569e

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9778438-0. Static analysis detected a VBA macro within the document, specifically a Document_Open macro that utilizes CreateObject. This indicates the macro is designed to execute a payload upon opening the document, a common characteristic of Emotet. The obfuscated document body content does not provide further insight into the specific lure.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9778438-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9778438-0
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` `2effaaf970b5f9de3ee06c41a03bfb4f772066e9848150d426295dbb68f79b6c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	12763 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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