Office (OLE) / .DOCX malware analysis — malicious · fee44ec3b3337966

MALICIOUS

Office (OLE) / .DOCX

154.2 KB Created: 2020-09-22 12:58:00 Authoring application: Microsoft Office Word

MD5: 9f4e70b71d6016a4100ab2a9977b75c1 SHA-1: 2ca7f228f724943444a7806da5ed22c7311c8232 SHA-256: fee44ec3b333796685007e96f4c1478fc810a6a4549ed0d18c4e26fb91e508f0

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is a malicious Office document containing VBA macros. The 'Document_Open' macro is present and configured to execute code via 'CreateObject' and 'GetObject' calls, indicating it's designed to run automatically when the document is opened. The presence of 'macros.bas' further confirms the macro-based nature of the threat. The ClamAV detection 'Doc.Malware.Ewtz-9765445-0' strongly suggests a known malware variant, though specific family attribution is not possible from the provided data.

Heuristics 8

ClamAV: Doc.Malware.Ewtz-9765445-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Ewtz-9765445-0
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` `3534612e311adddbcf2e093d61bfa43aa100b688e0fa70d64062312eb6cd9cc9`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	17155 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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