Office (OLE) / .DOCX malware analysis — malicious · ab018f08c79d8a8f

MALICIOUS

Office (OLE) / .DOCX

151.7 KB Created: 2020-09-24 10:05:00 Authoring application: Microsoft Office Word

MD5: 6071f4736c49e3edc59b175a0d5ab934 SHA-1: e3cd40f62f048311f520f5238cb49a5b229e0657 SHA-256: ab018f08c79d8a8f4335f9fa35e22f6d573ddcf82c5a1db98a8ceb6671bae1b6

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a Microsoft Office document containing a critical ClamAV detection for Doc.Trojan.Agent-9765752-0. High-severity heuristics indicate the presence of VBA macros, specifically a Document_Open macro that uses CreateObject and p-code auto-execution, suggesting it's designed to run malicious code upon opening. The obfuscated document body content, while not directly readable, contains strings that appear to be parts of PowerShell commands. The presence of the 'macros.bas' artifact further confirms the macro-based nature of the threat. The primary attack pattern involves leveraging VBA to execute code, likely to download and run a second-stage payload.

Heuristics 7

ClamAV: Doc.Trojan.Agent-9765752-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Agent-9765752-0
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` `b39e572cf96864edb4f5c39daa3a8388f74111156690860ca53002be67bbf3ff`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	20583 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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