Office (OLE) / .DOCX malware analysis — malicious · f8929ee8b0c6d8fc

MALICIOUS

Office (OLE) / .DOCX

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

MD5: e3649c113f5b3f16505e434375268e06 SHA-1: 8693e1ee2ed7355f6c140006bf4c0278da1e041f SHA-256: f8929ee8b0c6d8fcc69f12561d07945cb82dabdea454326b92d7b89045018f92

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a Microsoft Office document containing a Document_Open VBA macro. This macro utilizes CreateObject and p-code execution, indicating it is designed to download and execute a second-stage payload. ClamAV detection confirms this behavior, identifying it as a downloader. The document body content is heavily obfuscated and does not provide further context on the lure.

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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