Office (OLE) / .DOCX malware analysis — malicious · b4c16bec458dbfa7

MALICIOUS

Office (OLE) / .DOCX

266.0 KB Created: 2020-10-28 13:40:00 Authoring application: Microsoft Office Word

MD5: 2647c8e610ce05280f79101a2233fd14 SHA-1: 17cfca58921ab987cd582e37688ee11a366bcc3d SHA-256: b4c16bec458dbfa77f4be6aabc90ad540cbc5de9a19435498677e6b104962b07

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a malicious Office document containing VBA macros. The presence of a Document_Open macro and CreateObject calls indicates that the macro is designed to execute automatically when the document is opened. ClamAV detection as 'Doc.Downloader.Generic' further supports its malicious nature. The macro likely downloads and executes a second-stage payload, although the specific URL is benign.

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` `04f0b14197f396c9b03f7b934599b1b01d62a486cd3090375b867094895917c9`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18531 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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