Office (OLE) / .DOCX malware analysis — malicious · 12055ad316953428

MALICIOUS

Office (OLE) / .DOCX

212.8 KB Created: 2020-09-21 12:09:00 Authoring application: Microsoft Office Word

MD5: 588aa9b4aacb62d9cc69c88aca455b13 SHA-1: a21adee04b5e070c3c3ecbd223dbb319538b6afb SHA-256: 12055ad316953428f253335e313855ab7200e9b3bf0a03d8fda95dca58b0bc94

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample contains VBA macros, including a Document_Open macro, which is a common technique for executing malicious code upon opening the document. The heuristics indicate the use of CreateObject and GetObject, suggesting the macro is designed to download and execute a second-stage payload. The ClamAV detection further confirms its malicious nature as a downloader.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9764508-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9764508-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
GetObject call high OLE_VBA_GETOBJ

GetObject 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` `cea30dbaa44bcaf57fbcd15c35be69cfffbad74d3b69c3addc059acf5ad797f9`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19026 bytes

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