Office (OLE) / .DOCX malware analysis — malicious · 38bbd83de3da247d

MALICIOUS

Office (OLE) / .DOCX

156.2 KB Created: 2020-12-30 18:32:00 Authoring application: Microsoft Office Word

MD5: 7f4831c481ad6ceb803952e290fe557e SHA-1: affad456a50ebd4c3a4223d6e656860794322079 SHA-256: 38bbd83de3da247dd96f8f463e73ebc76a9165bb783fc85432714e863675d87f

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for VBA macros, including auto-execution and CreateObject calls, indicate a malicious downloader. The presence of a Document_Open macro suggests the payload is designed to execute automatically when the document is opened. The obfuscated document body text does not provide further context on the lure, but the overall behavior points to a macro-based downloader attempting to fetch and run a secondary malicious payload.

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` `e8d3f7d8d02f0b30fe9a4f739a77064bdfd79f1fb249409f6cc7dd9e6c88bf62`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6622 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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