Office (OLE) / .DOCX malware analysis — malicious · 2e8149f5710be530

MALICIOUS

Office (OLE) / .DOCX

192.6 KB Created: 2020-09-18 12:16:00 Authoring application: Microsoft Office Word

MD5: 92b80c1de7d508b5f7d2a773fc18353a SHA-1: 9ce448db8d631985644ec98c64ce2a13eeff9e65 SHA-256: 2e8149f5710be530164ed7faffc9f5c33602938ade1bba597c1bd5d31f8837b3

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file is a malicious Office document containing a VBA macro that automatically executes upon opening. The critical ClamAV detection and high-severity heuristics for VBA auto-execution and CreateObject calls indicate that the macro is designed to download and execute a second-stage payload. The presence of the 'macros.bas' file further supports this. No specific family could be identified, and no direct IOCs like URLs or hashes were extracted from the document body or scripts.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9763532-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9763532-0
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` `ba8241e4388725ade491e6e42da3e5f9cf169555b4f6e61ff9f624691af3445f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	20213 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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