Office (OLE) / .DOCX malware analysis — malicious · e3cd7451ef720df2

MALICIOUS

Office (OLE) / .DOCX

178.5 KB Created: 2020-10-22 15:17:00 Authoring application: Microsoft Office Word

MD5: 8e8ff83597a976569b614c9e33f3877f SHA-1: df21b6149523066415cf9a0c06901d84a54d3e22 SHA-256: e3cd7451ef720df2cbc18258725e7d4e5b881f0ab970b5d1f9343c1d9754d2ac

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, indicate malicious intent. The presence of a VBA macro in macros.bas, combined with the auto-execution of Document_Open, suggests the primary function is to download and execute a secondary payload. The document body appears to be heavily obfuscated or corrupted, preventing a clear understanding of its lure.

Heuristics 7

ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
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` `cecccb4a1113767f9883636c8aa1a2de57ced4949da2d8bcaf50534e5e598b34`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18857 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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