Office (OLE) / .DOCX malware analysis — malicious · ff7203da26d7d2d2

MALICIOUS

Office (OLE) / .DOCX

161.8 KB Created: 2020-09-14 13:58:00 Authoring application: Microsoft Office Word

MD5: 916ba717363888e29f7d9123404ce9a3 SHA-1: 8ab7fa0b7c2493a08f38dd4070fd2adcd86c6ffe SHA-256: ff7203da26d7d2d219af8ec3a0bb98e898b17bb2505f61f8518fe4a9cb2d6e01

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains VBA macros, specifically a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The critical ClamAV detection and high heuristic firings for CreateObject and p-code auto-execution further support this. The VBA code appears to be constructing a registry path for persistence: HKCU\Software\Microsoft\Windows\CurrentVersion\Run\IAccessible2Proxy. The primary function of the macro is to download and execute a second-stage payload.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9759967-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9759967-0
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` `0413a267e38325f4be53a04e5b39ce50899ec9f34b256bbc84efd19d1ef79ddb`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	22669 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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