Office (OLE) / .DOCX malware analysis — malicious · 52c7b76fb62c6ed0

MALICIOUS

Office (OLE) / .DOCX

158.3 KB Created: 2020-12-29 13:14:00 Authoring application: Microsoft Office Word

MD5: 5ebc3b113680494c065c0c7f430052dc SHA-1: 655b046841d6ace20da7799bdf23f2e2b243931b SHA-256: 52c7b76fb62c6ed0d3b9cdc12bd4bf7afd4ab97342e21648c5153ceac8ce897a

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file contains a VBA macro that is automatically executed upon opening, indicated by the 'Document_Open' and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristics. This macro likely downloads and executes a second-stage payload, as suggested by the 'OLE_VBA_CREATEOBJ' firing and the ClamAV detection name 'Doc.Downloader'. The embedded URL, though benign in reputation, is noted as a potential indicator.

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` `f0a26dbda37cee5a9e56f370f4faad071837ea1fd898646f154d0f1b66a66162`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	8375 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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