Office (OLE) / .DOC malware analysis — malicious · 7ea4b307e84c8b32

MALICIOUS

Office (OLE) / .DOC

1.37 MB Created: 2025-08-23 10:25:00 Authoring application: Microsoft Office Word

MD5: a9235540208fa6a25614c24a59e19199 SHA-1: 7bb0d162bbaa462c516502d1db56818d24ad825f SHA-256: 7ea4b307e84c8b32c0220eca13155a4cf66617241f96b8af26ce2db8115e3d53

340 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1204.002 Malicious File

The file is a malicious OLE document containing VBA macros, specifically a Document_Open macro that uses CreateObject and references CreateProcess API. ClamAV also detected it as Ole2.Macro.Agent. The presence of a Document_Open macro that executes code upon opening strongly suggests a downloader or initial access mechanism. No specific family could be identified, but the techniques used are common for macro-based malware delivery.

Heuristics 9

ClamAV: Ole2.Macro.Agent-9858864-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Ole2.Macro.Agent-9858864-1
Heap-spray pattern detected high SC_HEAP_SPRAY

Repeated 0x41 (A) bytes found
Reference to CreateProcess API high SC_STR_CREATEPROCESS

Reference to CreateProcess API
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.

URL http://schemas.openxmlformats.org/drawingml/2006/main
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.

URL http://schemas.openxmlformats.org/drawingml/2006/main
NOP-equivalent sled detected medium SC_NOP_EQUIV_SLED

Long run of 0x41 bytes
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `8f927deadde23cbbed0efc452afd9e0e28aff84df1ada8b081539f981ca48624`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5815 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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