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

Static analysis result for SHA-256 44a845bda14ecf47…

MALICIOUS

Office (OOXML) / .DOC

19.3 KB Created: 2022-05-31 01:15:00 UTC Authoring application: Microsoft Office Word 15.0000 First seen: 2022-08-17
MD5: 175b9055a0b3e93e098834a09332c49c SHA-1: 137fe442a5a2aacecacd959ef7896aa3406d43f9 SHA-256: 44a845bda14ecf476607fe06a24f59c0ce2ac71a8687212960507efb341dd671
222 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter T1059.001 Command and Scripting Interpreter: PowerShell

The sample leverages the CVE-2022-30190 vulnerability by embedding an OLE object that references an external HTML exploit. This technique is commonly used to download and execute a second-stage payload. The embedded URL http://182.92.67.97:8000/exploit.html is the primary indicator of compromise.

Heuristics 6

  • 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
  • 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://182.92.67.97:8000/exploit.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
5c1a7aca10cbb346730bd849d0160f563118cdb1fd6f8f8c54fde94571dba4c9		 ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 246272 bytes
ooxml_oleobject_00_ole10native_00.bin
84d737c40cd524accaf5a1864677a2466dd5954c5f8f0a1afe87d19a695125e3		 ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 241188 bytes

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