Office (OLE) / .DOCX malware analysis — malicious · 1efd0a1981dc0703

MALICIOUS

Office (OLE) / .DOCX

162.6 KB Created: 2020-12-29 20:50:00 Authoring application: Microsoft Office Word

MD5: b1ab16b901fe8cfdecba35fd02ed88e7 SHA-1: 3a6f356176177ac04b95937afc762e5ca238adfb SHA-256: 1efd0a1981dc07034aadfa6bdade3e26e49a389a09a617831eb51802201e5bc6

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initiating malicious actions upon document opening. The critical ClamAV detection as 'Doc.Downloader' strongly suggests its purpose is to download and execute further malicious content. The presence of CreateObject calls further supports the dynamic execution of code. No specific URLs were extracted, but the downloader nature is clear.

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` `e5f9549007a41fec3f244ce297cfb2983cfeb314035104f84c750e8267247398`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	8311 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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