Emotet Office (OLE) / .DOC malware analysis — malicious · 4249ab6e43bd5d70

MALICIOUS

Office (OLE) / .DOC

160.8 KB Created: 2020-09-15 23:02:00 Authoring application: Microsoft Office Word

MD5: 3c85f6e54c6879adbb8ba869f93bebe8 SHA-1: c17d655854628175e2fdce1b9e37d96795ff83cc SHA-256: 4249ab6e43bd5d70bc3433d69c5e4767d393469f6e7a1d074fb3d3545c29c702

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1547.001 Registry Run Keys / Startup Folder T1547.001 Scheduled Task

The critical ClamAV detection and high-severity heuristics for OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate a malicious macro-based document. The extracted PowerShell command, reconstructed from the obfuscated VBA, reveals an attempt to establish persistence by creating a scheduled task named 'IAccessible2Proxy' that downloads and executes a second-stage payload from 'http://185.14.191.178/a.ps1'. This aligns with Emotet's known behavior of using macro-laden documents for initial infection and establishing persistence.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9762287-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9762287-0
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` `2463ca5944a3498304fe918280f5b6583e6e8da36e1a3b40714097a3ead5b81e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25024 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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