Office (OLE) / .DOCX malware analysis — malicious · ef6c966c74e229e3

MALICIOUS

Office (OLE) / .DOCX

170.4 KB Created: 2021-01-05 12:07:00 Authoring application: Microsoft Office Word

MD5: 70f215100c4aeec986a369846b971d1a SHA-1: 7bc77f8569b2ce0fdbd7f0a6ff0f8eb77c34f568 SHA-256: ef6c966c74e229e34f880f5df67c40fc69a57caf55d1b033527dd9c5be04516b

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious Office document containing a VBA macro. The macro is configured to auto-execute upon opening, utilizing CreateObject to likely download and execute a second-stage payload. The ClamAV detection name 'Doc.Downloader.EmotetRed02224-9938637-0' strongly suggests a downloader family, though specific attribution is not possible from the provided evidence alone. The document body content is heavily obfuscated and unreadable.

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` `5fd199a84582bf2c4248191e49df05fe3a9d17ab4a6f639ead9a581ea6be129f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10799 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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