Office (OLE) / .DOCX malware analysis — malicious · bd17ceae08c87f45

MALICIOUS

Office (OLE) / .DOCX

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

MD5: dc6aae7aa36b7223c2e212c7e7f65ddb SHA-1: 1366c7854a3400008fced8712f2099e468e613ef SHA-256: bd17ceae08c87f45c042d5893ecd4547b333d49f07e732df28e2000b4b52c46b

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that utilizes CreateObject. This indicates an attempt to execute code automatically when the document is opened. The ClamAV detection as 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download and execute a second-stage payload. The document body content is heavily obfuscated and does not provide clear user-facing text, but the presence of VBA auto-execution with execution tokens is a critical indicator of malicious intent.

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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