Emotet Office (OLE) / .DOCX malware analysis — malicious · cffc2b87dffdf168

MALICIOUS

Office (OLE) / .DOCX

159.8 KB Created: 2020-12-28 20:57:00 Authoring application: Microsoft Office Word

MD5: 96a15628b04e36ff9ee9350d5e92e48a SHA-1: e590d24e260a67eb8f385d181dcc13b5d8090d1b SHA-256: cffc2b87dffdf1681957a997fa8ed1dde5774a918ebd6ec090c0b6a1d1bb54f1

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1140 Deobfuscate or Obfuscate

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious downloader. The presence of VBA macros and the detection name 'Doc.Downloader.EmotetRed02224' suggest this file is part of the Emotet botnet infrastructure, likely designed to download and execute further malicious payloads. The obfuscated document body content is typical for such lures.

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` `fc28b021e7c13690bd05b8fda29444b887d0bad8d106819ca318299d8abb8857`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6085 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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