Office (OLE) / .DOCX malware analysis — malicious · f589f6fecd0bf240

MALICIOUS

Office (OLE) / .DOCX

157.6 KB Created: 2020-10-19 11:46:00 Authoring application: Microsoft Office Word

MD5: 4f581cafc9be98dba1b1f3111b519665 SHA-1: 9b528e3283e87f5300a7f6d46514ef272fd16571 SHA-256: f589f6fecd0bf2407976afcc8a58f22f29f89aa5648defa661b595d0e0cc39c9

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file contains VBA macros, specifically a Document_Open macro that uses CreateObject, indicating an attempt to execute code automatically when the document is opened. The ClamAV detection and heuristic firings strongly suggest this macro is malicious, likely downloading and executing a second-stage payload. No specific family could be identified, but the presence of the 'macros.bas' artifact is noted.

Heuristics 7

ClamAV: Doc.Trojan.Agent-9780503-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Agent-9780503-0
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` `df3f11a486897c7a189da6e4d0ac7fa240cbe9ec205152865e455c6dee8f09c5`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15642 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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