Office (OLE) / .DOCX malware analysis — malicious · aa023277e7c4a829

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 38743cf4a5c29ea41a180330bb53cf61 SHA-1: aba15fb46c11475941e437e2f4322ab98d866274 SHA-256: aa023277e7c4a82947af555cd343fecf048c1c044e4e2fa8bd830e3d09fc5adb

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is a Microsoft Office document containing a Document_Open VBA macro. This macro utilizes CreateObject and GetObject calls, indicating it likely attempts to execute arbitrary code. The presence of a critical ClamAV detection further supports its malicious nature. No specific IOCs like URLs or hashes were extracted, but the macro's auto-execution and use of object creation are strong indicators of a downloader or dropper.

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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