Emotet Office (OLE) malware analysis — malicious · 25ba037bd4fbaad7

MALICIOUS

Office (OLE)

142.3 KB Created: 2020-10-15 06:34:00 Authoring application: Microsoft Office Word

MD5: 105a9a8e0d2893c62201dfc23f7ba017 SHA-1: 464962735e5e2dda9c6e77c2ea89c7bf07271663 SHA-256: 25ba037bd4fbaad7f1c1bde38923bc17afb10be5cb8195c8ba8f097b4d27911b

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for OLE_VBA_MACROS, OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate malicious VBA macro activity. The presence of the 'macros.bas' artifact further supports this. The Emotet family is identified due to the specific ClamAV signature. The VBA macro is designed to execute automatically upon opening the document, likely to download and run a secondary payload.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9778165-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9778165-0
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` `aa3822bbb419da819c0009ca2a50458591c2a917d376ecb16e3e87f227973bcb`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10774 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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