LokiBot Office (OOXML) / .DOC malware analysis — malicious · 8f592cd78f796534

MALICIOUS

Office (OOXML) / .DOC

323.4 KB Created: 2022-04-18 16:19:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2022-04-19

MD5: 83caaf1df8267ca47bdd43e8a795ea90 SHA-1: aa259f215d543738cc9ccbb844829d2db2f236f7 SHA-256: 8f592cd78f79653437c9c372d66b20769692f147cf120e9d82d3b5c5bf408530

224 Risk Score

Malware Insights

LokiBot · confidence 95%

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The file is identified as malicious by ClamAV as Win.Dropper.LokiBot-10023508-0. Static analysis revealed an embedded OLE object containing an executable file, strongly indicating exploitation of CVE-2026-21514. The presence of an embedded executable within the OLE package is a critical indicator of a dropper functionality.

Heuristics 7

OOXML Ole10Native with payload/link indicators — possible CVE-2026-21514 high CVE likely CVE_2026_21514

Office document contains embedded OLE (word/embeddings/oleObject1.bin) with Ole10Native plus executable, PE, or risky remote-link indicators. This is a likely CVE-2026-21514 exploitation shape.
ClamAV: Win.Dropper.LokiBot-10023508-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Dropper.LokiBot-10023508-0
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
Ole10Native package carries executable/script file type high OFFICE_PACKAGE_RISKY_FILE

OLE Package displayName or fullPath ends in an executable or script-capable extension. Even without UI extension spoofing, embedding a runnable payload inside an Office document is a high-risk delivery pattern.
Embedded OLE object medium OOXML_OLE_OBJECT

Document contains an embedded OLE object
Suspicious extracted artifact info 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/markup-compatibility/2006
- http://schemas.openxmlformats.org/officeDocument/2006/relationships
- http://schemas.openxmlformats.org/officeDocument/2006/math
- http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
- http://schemas.openxmlformats.org/wordprocessingml/2006/main
- http://schemas.microsoft.com/office/word/2006/wordml

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`ooxml_oleobject_00.bin` `ec8a7706414ce8a801dfe563b729a162eb55d4cc9f9d80a8abc7333c47d906d0`	ooxml-ole-object	OOXML embedded OLE part: word/embeddings/oleObject1.bin	372224 bytes
Detection ClamAV: Win.Dropper.LokiBot-10023508-0 Obfuscation or payload: likely Carved artifact entropy is 7.74, consistent with packed or encrypted content.
`ooxml_oleobject_00_ole10native_00.bin` `fa31a3264d4f0b7b1df0c6de6f41fa2fbc029b2a04fbd113fa2eabbcd9536dd4`	ole-package	OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native	366949 bytes
Detection ClamAV: Win.Dropper.LokiBot-10023508-0 Obfuscation or payload: likely Carved artifact entropy is 7.77, consistent with packed or encrypted content.
`emf_00.emf` `36244cb70c895af3c54046f10eef1bed07c6934fb2475f5ec3e2ad9e25ef88d9`	ooxml-emf	OOXML EMF part: word/media/image1.emf	5544 bytes

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