Office (OLE) / .DOCX malware analysis — malicious · 9787b45133bcc34b

MALICIOUS

Office (OLE) / .DOCX

159.7 KB Created: 2020-09-22 07:35:00 Authoring application: Microsoft Office Word

MD5: 587a1f13a6ecfaf8162bcf4653bb1abe SHA-1: c3f04e1bc70166d4c0e85d6b3556cd8a7be51d2d SHA-256: 9787b45133bcc34be0a429c433382108adfb5e5d3f2636e5a2c818dea83b3118

280 Risk Score

Malware Insights

MITRE ATT&CK

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

The presence of a Document_Open macro, coupled with CreateObject and GetObject calls, strongly indicates that the VBA code within this document is designed to execute automatically upon opening. This macro likely attempts to download and execute a second-stage payload, as suggested by the ClamAV detection and the 'Suspicious extracted artifact' heuristic. The document body content is heavily corrupted and unreadable, providing no further context on the lure.

Heuristics 8

ClamAV: Doc.Malware.Ewtz-9765424-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Ewtz-9765424-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
GetObject call high OLE_VBA_GETOBJ

GetObject 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` `a112d95a2b3b8361e272604fc368010c1a607c2cd21f88c20a607d79b8ac6136`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16742 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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