Office (OLE) / .DOCX malware analysis — malicious · c08f4b090fd56ca0

MALICIOUS

Office (OLE) / .DOCX

166.9 KB Created: 2020-09-24 06:41:00 Authoring application: Microsoft Office Word

MD5: fce7e7f5bcd8f187e9b25db7c8ce0555 SHA-1: f228d1829c4f0b8aa577e8517dfe28382d3a847b SHA-256: c08f4b090fd56ca0ec20f9f0af23a748000a419cda87a09592702dc5d4294221

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains VBA macros, including a Document_Open auto-execute macro, which is designed to run automatically when the document is opened. The macro utilizes CreateObject and p-code execution, indicating an attempt to run arbitrary code. The DOC BODY content, though heavily obfuscated, appears to be constructing a PowerShell command. This suggests the macro's intent is to download and execute a second-stage payload. The ClamAV detection further supports its malicious nature.

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` `5fc186fdbad9f31c9e64d83153a39dd477b4feadffd069d1417de0a82694326f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18827 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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