Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 aba943c810514cd6…

MALICIOUS

Office (OOXML)

305.4 KB Created: 2021-04-29 17:00:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2021-05-04
MD5: 0e0011161571fb09e1dfd5f373ae3302 SHA-1: 07e87e4da6b6d3ffd8cfbb44467427ec1aab8120 SHA-256: aba943c810514cd6c341670c878202a26bef842408f4751c543999a4675417a8
84 Risk Score

Heuristics 4

  • Ole10Native package drops an auto-executable payload critical OFFICE_PACKAGE_RISKY_FILE
    OLE Package displayName or fullPath ends in a directly auto-executable extension (a runnable binary or a script the default shell host runs on double-click). Embedding such a payload inside an Office document has no benign authoring use — it is a malware-delivery dropper.
  • 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.microsoft.com/office/word/2010/wordprocessingCanvas In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2014/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2015/9/8/chartexIn 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/2015/wordml/symexIn 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)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject1.bin 323072 bytes
SHA-256: a074c728ff9da2172df52b629c8eba9c1c8c9b6fb62799ac0a9784459d3f59b4
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.89, consistent with packed or encrypted content.
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 317995 bytes
SHA-256: ed85ec0fd6fb3b29334d50e08b938f12c0e325f839d1cbf034d4723448ee7be0
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.93, consistent with packed or encrypted content.
ooxml_oleobject_00_ole10native_00_Account_Restore.exe ole-package-payload OOXML word/embeddings/oleObject1.bin Ole10Native payload: display_name=Account Restore.exe; full_path=C:\Users\ADMINI~1\AppData\Local\Temp\2\Account Restore.exe; temp_path=; def_file= 317440 bytes
SHA-256: 28f711c2984732b9000eb5549428af2f293af0ae665efb799e245277afe48fe5
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.93, consistent with packed or encrypted content.
emf_00.emf ooxml-emf OOXML EMF part: word/media/image1.emf 7468 bytes
SHA-256: 51b85fee4cc69020c66795d3cb717105b6bf79c783f907ca7548a4dc25bf0f8f