Malicious Office (OOXML) / .DOC — malware analysis report

Static analysis result for SHA-256 daaa271cee97853b…

MALICIOUS

Office (OOXML) / .DOC

402.1 KB Created: 2022-06-10 07:33:00 UTC Authoring application: Microsoft Office Word 15.0000 First seen: 2022-08-17
MD5: eafa11070f213f16efc030f625a423d1 SHA-1: b1847c89143fad810b7a3686296b9c1e91ad087c SHA-256: daaa271cee97853bf4e235b55cb34c1f03ea6f8d3c958f86728d41f418b0bf01
232 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell

The sample leverages the CVE-2022-30190 vulnerability (Follina) through an embedded OLE object, as indicated by multiple high and critical heuristic firings. This object points to the URL http://kitten-268.frge.io/article.html!, which is likely used to download and execute a secondary payload. The document body discusses the potential use of nuclear weapons in Ukraine, likely as a lure to engage the reader.

Heuristics 8

  • CVE-2022-30190 — Follina stage-1 external HTML oleObject critical CVE likely CVE_2022_30190
    External OLEObject relationship targets a remote .html with the Follina delivery shape (oleObject -> HTTP(S) HTML with trailing Moniker '!'). In live Follina samples the ms-msdt: trigger is served by the remote HTML, not the document itself.
  • OOXML OLE2Link remote loader — CVE-2017-0199 related high CVE related CVE_2017_0199_RELATED
    Document contains an o:OLEObject Type=Link whose external oleObject relationship points to a remote URL. This is the OOXML OLE2Link activation shape associated with CVE-2017-0199 delivery, but the local file does not expose URL Moniker bytes or a weaponized extension/content type, so the exact CVE cannot be proven statically.
  • ClamAV: Win.Exploit.CVE_2022_30190-9951234-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Exploit.CVE_2022_30190-9951234-1
  • External OLE object relationship high OOXML_EXTERNAL_OLE_OBJECT
    Document contains an oleObject relationship whose target is an external HTTP(S) URL. Office resolves this through OLE/object update paths rather than as a normal user-clicked hyperlink.
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object
  • External hyperlinks (6) low OOXML_EXTERNAL_HYPERLINKS
    Document contains 6 external hyperlinks — clickable URLs are stored as external relationships. First target: https://www.atlanticcouncil.org/expert/keir-lieber/
  • 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://kitten-268.frge.io/article.html
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.openxmlformats.org/markup-compatibility/2006
    • http://schemas.openxmlformats.org/officeDocument/2006/relationships
    • http://schemas.openxmlformats.org/officeDocument/2006/math
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
    • http://schemas.openxmlformats.org/wordprocessingml/2006/main
    • http://schemas.microsoft.com/office/word/2010/wordml
    • http://schemas.microsoft.com/office/word/2012/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInk
    • http://schemas.microsoft.com/office/word/2006/wordml
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShape
    • https://www.atlanticcouncil.org/expert/keir-lieber/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
3009f76a76f72ee9cc1ab68657420cdd1582a7cb90090b9be27c820b31f5be53		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 351744 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.56, consistent with packed or encrypted content.
ooxml_oleobject_00_ole10native_00.bin
01ce29e9e80733242c7fbda6e38a7c30086e463a7efcb5eba50e9a2faa25427a		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 172868 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.60, consistent with packed or encrypted content.

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