Office (OLE) malware analysis — malicious · de1f81702ce8a2e9

MALICIOUS

Office (OLE)

167.5 KB Created: 2018-06-19 20:40:00 Authoring application: Microsoft Office Word First seen: 2019-05-31

MD5: b82f0dcefa7aef6a3cbd27ddef8729d2 SHA-1: dc1f4f613d2cd1069fd1b82691dd0a381db1d98a SHA-256: de1f81702ce8a2e9372c36e0d0899715eb79992d0c50fc3bd0c7814814d0eefc

222 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.001 PowerShell

The file contains an embedded OLE package (ole10native_00.bin) flagged as risky because it drops an auto-executable payload, likely an HTA file. Heuristics indicate references to PowerShell and Windows Script Host, suggesting these interpreters are used to execute the dropped payload. The exploitation of CVE-2026-21514 is also indicated, pointing towards client execution.

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/_1590931657/Ole10Native	127897 bytes
SHA-256: `a1da11ff604a9f0ad2064b74c74c7a1fcc5ff23aed26df617c60ffb178257bea`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis recovered command string(s): WScript.Echo("psmfoDFthSZSduOGPBbS"), WScript.Echo("542"), WScript.Echo("cZkDlfWPzaOEtHWHGnfvEvSI") Carved artifact contains 4 shell/COM execution token(s).

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