Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 2a915127f4ed11e7…

MALICIOUS

Office (OOXML)

380.1 KB First seen: 2015-09-26
MD5: 7035b64535ebc2f51acb59623f46a570 SHA-1: f85529218c57f6d65ce78ee222a658656c70510c SHA-256: 2a915127f4ed11e70a2c903d2c611b4e4a1ce6cfc8c72951e1ea521aa892b319
142 Risk Score

Malware Insights

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

The sample is a malicious OOXML document containing an embedded OLE object. This object is identified as a package payload that downloads and executes a script. The script is designed to drop and run an executable file named 'Software.exe', indicating a downloader or droppper functionality.

Heuristics 4

  • Ole10Native package payload is a download-and-execute script critical OFFICE_PACKAGE_SCRIPT_DROPPER
    The OLE Package's embedded payload contains a script that hosts a shell (PowerShell/WScript/mshta), fetches a remote resource, and executes it — a download-and-run dropper. Embedding such a script inside an Office document via the Object Packager is a direct user-execution delivery technique (MITRE T1204.002), not a benign attachment.
  • 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 Embedded OLE package script

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: word/embeddings/oleObject0.bin 859984 bytes
SHA-256: e69f1811a2b0e96bdbf39139da652fce8c253676d51cb5b86ccd1c6f92a747bb
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML word/embeddings/oleObject0.bin Ole10Native stream: Ole10Native 850768 bytes
SHA-256: 2ccff3062a3684c759238568780f614551850ace69b525cc5dce0e816e5666e2

Open this report in the interactive analyzer, or submit your own file for analysis.