Office (OLE) / .DOCX malware analysis — malicious · c700f75dc812b1b2

MALICIOUS

Office (OLE) / .DOCX

207.3 KB Created: 2020-10-28 18:42:00 Authoring application: Microsoft Office Word

MD5: 0af31d6528d45fe583315e4cbe6325a3 SHA-1: cd799496fc977bd51f8a87449b8c51761e63c879 SHA-256: c700f75dc812b1b29f541c88615349648e5386acf29f2f23448e9ac3f1262ba3

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file is a malicious DOCX document containing VBA macros. The presence of a Document_Open macro and CreateObject calls, along with ClamAV detection as a downloader, strongly indicates that the macros are intended to execute malicious code. The specific heuristic 'OLE_VBA_PCODE_AUTOEXEC_EXEC' confirms auto-execution of code via CreateObject within the Document_open macro. The document body content is heavily obfuscated and does not provide clear user-facing text, but the technical indicators point to a downloader function.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
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` `e949db65d47346cd391eb9bc49c66a713688cfea31c7cb788a6d1dce1ea9efc6`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18584 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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