Office (OLE) / .DOCX malware analysis — malicious · 59ed41388826fed4

MALICIOUS

Office (OLE) / .DOCX

5.24 MB Created: 2021-09-21 06:52:00 Authoring application: Microsoft Office Word

MD5: 7c6ff96ddaf3bf3bf824ba6e625a9d21 SHA-1: 2a963ed8316fd46ed59031daf342f7851643f10f SHA-256: 59ed41388826fed419cc3b18d28707491a4fa51309935c4fa016e53c6f2f94bc

222 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains a VBA macro within the Document_Open subroutine, which is designed to execute code upon opening the document. This macro utilizes CreateObject and GetObject calls, indicative of malicious intent to manipulate files and execute processes. The script reconstructs a file path and then uses WMI to execute it, likely downloading and running a second-stage payload.

Heuristics 7

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.
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` `a1db2cd235cab93ba8d2b466a4486fcefa10f4001b8dd4f5108899fbcd211fa6`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2980 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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