Office (OLE) / .DOCX malware analysis — malicious · de3fdb0bc2ccdff9

MALICIOUS

Office (OLE) / .DOCX

211.6 KB Created: 2020-12-22 18:13:00 Authoring application: Microsoft Office Word

MD5: 4b4d7ddb58df32ea974264223752bf88 SHA-1: e50a9f458ce1040238cd7b26dc5136045850784b SHA-256: de3fdb0bc2ccdff9476b876a3296cac1568293ab714ff3ef72e020df11bf809f

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file contains VBA macros, specifically a Document_Open macro that uses CreateObject, indicating an attempt to execute malicious code upon opening. The ClamAV detection 'Doc.Downloader.EmotetRed02224-9938637-0' strongly suggests this is a downloader. The obfuscated document body text, while unreadable, is consistent with lures used in such attacks. The primary function appears to be downloading and executing a secondary payload.

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` `8962e4bb9060366f196bbaa9086a3c9775784f792d9952a2d2a973cddd73b89c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15531 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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