Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 01e0002c4954d1ae…

MALICIOUS

Office (OOXML)

97.4 KB Created: 2015-12-23 07:33:29 UTC Authoring application: Microsoft Excel 14.0300 First seen: 2016-08-15
MD5: 0c463ff6a00a7b721820eb531b7bf351 SHA-1: 1a019b71bac53fbc4ce7a6b0f23e6b96b47d72b4 SHA-256: 01e0002c4954d1ae119b8a0f16e2947e401ee37c6e58e8c9d14e6e3c421e2d00
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample is an OOXML document containing an embedded OLE object. This object is identified as a package that drops an auto-executable payload, specifically an SCR file named Mystify.scr. This indicates the document is likely intended to trick the user into executing a malicious file, commonly delivered via spearphishing.

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.microsoft.com/SMI/2005/WindowsSettings In document text (OOXML body / shared strings)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: xl/embeddings/oleObject1.bin 225792 bytes
SHA-256: d311c1942630b2baba5688a5b562d5b162b29c096966fb0681a1ecb6c285927b
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML xl/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 221559 bytes
SHA-256: 4726199b8724b0c348175ddbde98860c77b32d4b1a801302a3642291b9645404
emf_00.emf ooxml-emf OOXML EMF part: xl/media/image1.emf 5000 bytes
SHA-256: 836a273dcb32b678ad8d0c60a0ac11698843a8f797795e00daa67ad04f0d39d6