Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 7bdd92f8e5a2238f…

MALICIOUS

Office (OOXML)

35.4 KB Created: 2017-05-12 06:54:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2017-08-08
MD5: 8732becab41b5c891751afc3d3c40ed2 SHA-1: 797474e807f214d39c2d11cad1f4ddb973fe2138 SHA-256: 7bdd92f8e5a2238f48d0cb0a50e2b30f4ca35427d6969282d203be92c1308c8e
82 Risk Score

Malware Insights

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

The sample is an OOXML document containing an embedded OLE object, which is flagged as risky because it drops an auto-executable payload with a .jse extension. The document body contains a deceptive message prompting the user to open an embedded file for payment details, indicating a social engineering lure. The presence of the embedded OLE object and the dropped executable suggests an attempt to execute malicious code on the victim's system.

Heuristics 3

  • 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
  • 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.openxmlformats.org/markup-compatibility/2006 In 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.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/2006/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2010/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn 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/2010/wordprocessingGroupIn 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/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingCanvasIn 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/852631701.bin 59894 bytes
SHA-256: 75cb1cfd92d241cba6bd70e2c3cc6037706b32f3686b1efb0133c3c5cc84ea9d
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML word/embeddings/852631701.bin Ole10Native stream: Ole10Native 56038 bytes
SHA-256: 70c5e4faf11dea0957ec28e41a6d4f94d26622e19019e022684e9832c3d506c7
emf_00.emf ooxml-emf OOXML EMF part: word/media/image3.emf 5188 bytes
SHA-256: 102c396fce59ad8ee3c0a9e0c9713e393b3f473a7f21915cf145807adb09f0f7
emf_01.emf ooxml-emf OOXML EMF part: word/media/image2.emf 5180 bytes
SHA-256: 2e4a3ceef3927317e9d059dd27a8d11f293c276daed1793629dc61d5964960bb

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