Office (OLE) / .DOCX malware analysis — malicious · c7a85af45b6b4f95

MALICIOUS

Office (OLE) / .DOCX

182.0 KB Created: 2020-10-22 07:03:00 Authoring application: Microsoft Office Word

MD5: 5f2556509917c2a2339930b222277a28 SHA-1: 90f8c8e2eccf03066cc9df60bec8b887f03ac934 SHA-256: c7a85af45b6b4f958e7464875678139be6209edd9d863301247c0c4469b29428

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious Office document containing VBA macros, specifically triggering a Document_Open auto-execution macro. This macro uses CreateObject, indicating it likely attempts to download and execute a second-stage payload. The ClamAV detection as 'Doc.Downloader.Logan-9781905-0' further supports this. The obfuscated document body text does not provide a clear lure, but the presence of VBA macros and the downloader heuristic strongly suggest a malicious intent to compromise the user's system.

Heuristics 7

ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
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` `9eefe8f6ffcba14d0b71c6151e5387d8f5be4d801ca642a4cdf376fd6353abf9`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19020 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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