Emotet Office (OLE) / .DOC malware analysis — malicious · a973fb7943766b57

MALICIOUS

Office (OLE) / .DOC

139.1 KB Created: 2020-09-28 21:18:00 Authoring application: Microsoft Office Word

MD5: ee8691df830c8049a82b6742c7b87ab9 SHA-1: fc0b9af297d018fd313934248f5e7e9aac4752da SHA-256: a973fb7943766b57cd43a3411ebc0e4f2526142e27a0c7e259a0fdabd30a5596

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The sample is a malicious OLE document containing a VBA macro that automatically executes upon opening, as indicated by the 'OLE_VBA_DOCOPEN' and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristics. The ClamAV detection and the presence of a 'macros.bas' file strongly suggest Emotet. The macro's likely purpose is to download and execute a second-stage payload, a common Emotet delivery technique.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9769000-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9769000-0
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` `af1832d1f4c91fc85d2c99e2822b1b7480a5e715a732a96dc374f162b3694b82`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6632 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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