Emotet Office (OLE) / .DOC malware analysis — malicious · c8dcc8aed764ae8a

MALICIOUS

Office (OLE) / .DOC

198.5 KB Created: 2020-10-21 13:40:00 Authoring application: Microsoft Office Word

MD5: 1ab745d28ebd9ac71df643ad8e9b6d8c SHA-1: b8b26e57f6b944614d05a5a5f7f1e306ed54287b SHA-256: c8dcc8aed764ae8aa668b0513fcb438c026739dd1d76bc7e464ffb7d35d3431e

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The file is a malicious Office document containing VBA macros, specifically a Document_Open macro that executes code. Heuristics indicate the use of CreateObject and p-code auto-execution, typical of droppers. The ClamAV signature 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0' strongly suggests the Emotet family. The macro likely downloads and executes a second-stage payload, aligning with the Ingress Tool Transfer technique.

Heuristics 7

ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
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` `95eb3c5d035a5c49033717199bc50764986e3b5ab99bba0bc56e259ec5a3061f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	23248 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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