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

Static analysis result for SHA-256 0ce69ffd76904b5e…

MALICIOUS

Office (OOXML) / .DOC

622.5 KB Created: 2022-09-26 08:50:00 UTC Authoring application: Microsoft Office Word 16.0000
MD5: 31667c332dadb2805f05a6d145d99088 SHA-1: f0f034896f7c38a3d44a938f25ec7ba20ad45287 SHA-256: 0ce69ffd76904b5e23970ff473590b9f2400052ce5127f2afa0f9917d57016d4
158 Risk Score

Malware Insights

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

The file is identified as malicious due to multiple high-severity heuristics related to CVE-2017-8759 and CVE-2023-36884, indicating exploitation of vulnerabilities via external RTF object loading. The document body contains a 'Forecast Alert' and a 'Download here' call to action, suggesting a lure to trick the user into downloading a malicious file. The primary IOC is the URL associated with the CVE-2023-36884 exploit.

Heuristics 6

  • CVE-2023-36884 — external RTF auto-load relationship critical CVE likely CVE_2023_36884
    Document auto-load relationship references a remote RTF file (https://forecast.comsats-net.com/5760/1/5037/2/0/0/0/m/files-3a06489f/file.rtf), matching the stronger Storm-0978/RomCom external-RTF delivery shape. Plain clickable hyperlinks are not enough for this CVE rule.
  • OOXML OLE2Link remote document — CVE-2017-8759 related high CVE related CVE_2017_8759_RELATED
    Document contains an o:OLEObject Type=Link whose external oleObject relationship fetches a remote Office-looking document. That is the OOXML OLE2Link staging shape used by CVE-2017-8759 campaigns when the remote document/WSDL supplies the SOAP moniker payload; the local file alone does not contain the WSDL body needed for an exact match.
  • 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.
  • External hyperlinks (1) low OOXML_EXTERNAL_HYPERLINKS
    Document contains 1 external hyperlink — clickable URLs are stored as external relationships. First target: https://www.pmd.gov.pk/en/assets/dengue2022/Dengue-Alert-I.pdf
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 https://forecast.comsats-net.com/5760/1/5037/2/0/0/0/m/files-3a06489f/file.rtf
    • https://www.pmd.gov.pk/en/assets/dengue2022/Dengue-Alert-I.pdf
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas
    • http://schemas.microsoft.com/office/drawing/2014/chartex
    • 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/2015/wordml/symex
    • 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
    • http://schemas.openxmlformats.org/officedocument/2006/relationships/oleobject

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
emf_00.emf
1833637d2bb49186e0667ae0896ecc4d5b00b3383529f74edb75cad8748cd9b3		 ooxml-emf OOXML EMF part: word/media/image1.emf 52 bytes

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