Emotet Office (OLE) / .DOCX malware analysis — malicious · ff58a7b1e34b5e2d

MALICIOUS

Office (OLE) / .DOCX

161.2 KB Created: 2020-10-16 18:44:00 Authoring application: Microsoft Office Word

MD5: 6529a23a9170bbac1aa6d5863730cdb9 SHA-1: ea29eb468919a676a0c3703a7a42a01f45ae5279 SHA-256: ff58a7b1e34b5e2de40fa9fa020ecc46b3c1cf0eedd40653e719e2fba15ce05f

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with the signature Doc.Malware.Emotet-9778591-0. Static analysis reveals the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject. This indicates the document is designed to execute malicious code upon opening, a common characteristic of Emotet. The macro's auto-execution and use of CreateObject strongly suggest it's intended to download and execute a second-stage payload.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9778591-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9778591-0
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` `fcaa38ed96b1b218739bafc5403c2803ab83f37a0565afb297027068f0a0ee86`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15517 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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