Office (OLE) / .DOCX malware analysis — malicious · eb57e86cb83d891d

MALICIOUS

Office (OLE) / .DOCX

167.4 KB Created: 2020-09-24 06:41:00 Authoring application: Microsoft Office Word

MD5: 9f77902ea20376c5d7b0e1480d31109e SHA-1: 57f45bbd37db7b42af2505bb09bc845f33c487e9 SHA-256: eb57e86cb83d891d8f3c4affcf8004405974426112d58396bd7f5684f6d2d7b7

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious DOCX file containing a VBA macro. The macro is configured to auto-execute via the Document_Open event and uses CreateObject, indicating it's designed to run code. The extracted document body, though heavily obfuscated, appears to contain PowerShell commands. This suggests the macro's purpose is to download and execute a second-stage payload. The ClamAV detection further supports its malicious nature.

Heuristics 7

ClamAV: Doc.Trojan.Agent-9765752-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Agent-9765752-0
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` `5fc186fdbad9f31c9e64d83153a39dd477b4feadffd069d1417de0a82694326f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18827 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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