Office (OLE) / .DOCX malware analysis — malicious · 24c7551200e919fc

MALICIOUS

Office (OLE) / .DOCX

172.2 KB Created: 2020-09-17 10:17:00 Authoring application: Microsoft Office Word

MD5: af5701e6c5f9bd86f09a46875323fbfc SHA-1: 02429e66570b6b347c3357c559d27e5211f11eb1 SHA-256: 24c7551200e919fc0bdce151aef784c0c324c81a337a8bf70e67cfebf1abae0d

240 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The file is a Microsoft Office document containing a high-confidence detection for VBA macros, specifically a Document_Open macro that utilizes CreateObject. This indicates the document is designed to automatically execute malicious code when opened. The ClamAV detection as 'Doc.Downloader.Generic' further supports its role as a downloader. No specific family could be identified, but the techniques suggest it's a macro-based downloader.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9762674-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9762674-0
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` `9ba8ec3966e91d175acafd30ec3438df19c84a3d5c19c35fd5e40d1b639faa28`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	20635 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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