Office (OLE) / .DOCX malware analysis — malicious · b418b8729a429df3

MALICIOUS

Office (OLE) / .DOCX

162.0 KB Created: 2020-12-29 20:50:00 Authoring application: Microsoft Office Word

MD5: b92cd9a6eca6aa9b34afc572ff969046 SHA-1: e2240739e9cbd979e3bfdbdd6a6e8b5a43e4953d SHA-256: b418b8729a429df3b5029222db61b762411c34971aa6c76b3fed3d12146a984d

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics indicate this is a malicious downloader. Specifically, the Document_Open macro combined with CreateObject calls strongly suggests the execution of a secondary payload. The presence of VBA macros and the 'Doc.Downloader.EmotetRed02224-9938637-0' ClamAV signature point towards a downloader functionality, likely to fetch and run further malware. The document body content is heavily obfuscated and does not provide further context on the lure.

Heuristics 7

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.
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` `e5f9549007a41fec3f244ce297cfb2983cfeb314035104f84c750e8267247398`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	8311 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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