Office (OLE) / .DOC malware analysis — malicious · 9fce38139d9e77fd

MALICIOUS

Office (OLE) / .DOC

155.2 KB Created: 2020-09-22 12:54:00 Authoring application: Microsoft Office Word

MD5: 420c6c27a612aeab048b814843e76c20 SHA-1: 365d47431b75f4eca9503a3c59aeba5ba21fea86 SHA-256: 9fce38139d9e77fd480c2a01e85a45e8d91d71e08b7dd0f4a39b9af53c2a0fb2

280 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file contains VBA macros, specifically a Document_Open macro that is configured to execute automatically. The heuristics indicate the use of CreateObject and GetObject calls, suggesting the macro is designed to perform actions beyond simple document manipulation. The ClamAV detection further confirms its malicious nature. The primary attack vector is likely a spearphishing attachment, leveraging the auto-execution of VBA code to initiate a malicious payload.

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` `63bc7201a259a9f3eac24fc4f9990c61de6bed3eb66abffd8ef4af2ac67d9b62`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15901 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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