Emotet Office (OLE) / .DOCX malware analysis — malicious · 27ee73e040198c29

MALICIOUS

Office (OLE) / .DOCX

154.3 KB Created: 2020-12-28 15:43:00 Authoring application: Microsoft Office Word

MD5: e6ffb08118c3c8f496e74efd0f96a661 SHA-1: 38142ea1a80094ee8e54eec15ac57a243e0a4008 SHA-256: 27ee73e040198c291d49bd3d28bf288b54e8706e33397b1ba840412e16cbfdc0

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1140 Deobfuscate or Obfuscate

The sample contains VBA macros, specifically a Document_Open auto-execution macro, which is a common delivery mechanism for Emotet. The heuristic firings indicate the macro uses CreateObject to download and execute a second-stage payload. The ClamAV detection name also strongly suggests Emotet. The document body appears to be obfuscated or corrupted, but the presence of macros and the associated heuristics are sufficient for attribution.

Heuristics 8

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
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.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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` `a004a96685dc375590aeec65acf06fce9e74ef2bbe0aa7a48bc315f9645e3700`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6009 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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