Office (OOXML) malware analysis — malicious · 0e5c397993b4db2e

MALICIOUS

Office (OOXML)

954.8 KB Created: 2020-10-19 12:09:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2020-10-25

MD5: 806967f002124ab6bde56b0dae884666 SHA-1: abd451f503a1b9fa8db2b1779b70bb8890b3d16a SHA-256: 0e5c397993b4db2e511e77017bba2db2db86aecb67d44d3edeca12b861ffd903

84 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1137.001 Office Application Build

The sample is a malicious OOXML document containing an embedded OLE object. This object is identified as a package that drops an auto-executable payload, specifically a JAR file. The presence of this embedded object strongly suggests an attempt to deliver a secondary malicious payload upon opening the document.

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.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)

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`ooxml_oleobject_00.bin`	ooxml-ole-object	OOXML embedded OLE part: word/embeddings/oleObject1.bin	1566720 bytes
SHA-256: `86011c7f36b2070d79afd9d724b4f0c1118d41e4e55c0b6cf93c52ba5b42cee0`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.78, consistent with packed or encrypted content.
`ooxml_oleobject_00_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native	1552259 bytes
SHA-256: `17f6dfaa2b40725621324a4b972caf18a89e905b0bd1f0d39c6d9f26174ae177`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.81, consistent with packed or encrypted content.
`ooxml_oleobject_00_ole10native_00_2IpLHLNRSWL5Iyd.exe`	ole-package-payload	OOXML word/embeddings/oleObject1.bin Ole10Native payload: display_name=2IpLHLNRSWL5Iyd.exe; full_path=C:\Users\SUCCESS\AppData\Local\Temp\2IpLHLNRSWL5Iyd.exe; temp_path=; def_file=	1551872 bytes
SHA-256: `a69b4e5b81128406fd2d580b13e8efc633a1af50c80ab5ee6c0be8c4b241a28b`
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.81, consistent with packed or encrypted content.
`emf_00.emf`	ooxml-emf	OOXML EMF part: word/media/image1.emf	5436 bytes
SHA-256: `9dcb87dd0328d407e597785103054910465573a4f30158eae475dbfda68a9cf8`

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