Office (OLE) / .DOCX malware analysis — malicious · 773a15b11264f83c

MALICIOUS

Office (OLE) / .DOCX

156.9 KB Created: 2021-01-04 18:59:00 Authoring application: Microsoft Office Word

MD5: 2fd4c63583ed1d18fb2f156d80b42966 SHA-1: 3b4bca50d26c2fd1699faa16292eed4c0fa97215 SHA-256: 773a15b11264f83c09890cedbb7aedc943a30430f5b355d38e5625f2ebd3fb8f

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

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 suggests the document is designed to download and execute a second-stage payload, a common technique for malware delivery. The document body appears to be heavily obfuscated or corrupted, preventing a clear understanding of its lure.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
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` `28e0aab9def1820176582f12126397a14f2c858209766b704c735ce1d1db4cc2`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	7154 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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