Office (OLE) malware analysis — malicious · 02d56e5f8a14a2a6

MALICIOUS

Office (OLE)

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

MD5: 1b21eb38a48a617ce2ab73d040ff85f9 SHA-1: cc7d1c72f7f9735a6ec51fcc4406ea911ff01a8d SHA-256: 02d56e5f8a14a2a6cfaae976bce6571984573f2374cfa11d3f72f065ae9978b1

262 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment

The sample contains a Document_Open VBA macro that triggers an obfuscated PowerShell command. This command is likely a stager designed to download and execute a second-stage payload. The presence of the 'OLE_USERFORM_OBFUSCATED_POWERSHELL' heuristic and the structure of the VBA code strongly suggest this malicious behavior.

Heuristics 7

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-9762672-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9762672-0
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.
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` `c7305ccc26d392bb87c692b42d2d6bc38b982a0e4da883514cef9164df30503f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18576 bytes

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