Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 c8449c49a53d9af2…

MALICIOUS

Office (OOXML)

11.7 KB Created: 2021-09-13 05:57:00 UTC Authoring application: WPS Office_11.1.0.10578_F1E327BC-269C-435d-A152-05C5408002CA First seen: 2021-09-22
MD5: b9524567a0f3a16a27c5c45aaffb1db4 SHA-1: 5f3c16c55fb5a3c0063db13a2b226e6668995a3c SHA-256: c8449c49a53d9af23dbeb25c88d24d4c622cc27f26f55c228ec2b2a579a7adef
142 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This Office document was flagged as malicious by ClamAV. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Heuristics 4

  • External OLEObject gadget — CVE-2021-40444 critical CVE exact CVE_2021_40444
    External relationship to mhtml:http://156.227.25.49:8080/side.html!x-usc:123 — exploitable external OLEObject gadget pattern for CVE-2021-40444
  • 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 relationship medium OOXML_EXTERNAL_REL
    External target in word/_rels/document.xml.rels: mhtml:http://156.227.25.49:8080/side.html!x-usc:123
  • 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://156.227.25.49:8080/side.html!x-usc:123 OOXML external relationship
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvasIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2012/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroupIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn document text (OOXML body / shared strings)
    • http://www.wps.cn/officeDocument/2013/wpsCustomDataIn document text (OOXML body / shared strings)
    • https://us02web.zoom.us/j/8252725406?pwd=SEY3S2lmWlBoT2tFa1dGSXlzR0ZOUT09���In document text (OOXML body / shared strings)

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