Office (OOXML) malware analysis — malicious · a33de0888912ab61

MALICIOUS

Office (OOXML)

608.0 KB Created: 2020-10-13 13:18:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2020-10-16

MD5: 747c82733d3197ea939dbedebc364795 SHA-1: 3fadf708c41ef3bdc2dfda72913a1f07c7bafa24 SHA-256: a33de0888912ab6110bd38f0e5a30180c14412e3ed21ef0bc42b9dbf62569a90

204 Risk Score

Heuristics 5

ClamAV: Win.Dropper.Remcos-10024288-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Dropper.Remcos-10024288-0
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	745984 bytes
SHA-256: `2c9eb11a876fb7c169d7ea49e02cf79b45b9f1f0071d30854907f1b59ebd8e8e`
Detection ClamAV: Win.Dropper.Remcos-10024288-0 Obfuscation or payload: likely Carved artifact entropy is 7.76, consistent with packed or encrypted content.
`ooxml_oleobject_00_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native	737667 bytes
SHA-256: `cded73ca5b42f5295235f9e3d1e11c73aa6a593d2081bfb30355c0310497e083`
Detection ClamAV: Win.Dropper.Remcos-10024288-0 Obfuscation or payload: likely Carved artifact entropy is 7.80, consistent with packed or encrypted content.
`ooxml_oleobject_00_ole10native_00_fcqa9lIVZxmrUcw.exe`	ole-package-payload	OOXML word/embeddings/oleObject1.bin Ole10Native payload: display_name=fcqa9lIVZxmrUcw.exe; full_path=C:\Users\SUCCESS\AppData\Local\Temp\fcqa9lIVZxmrUcw.exe; temp_path=; def_file=	737280 bytes
SHA-256: `ed5910709c08a301150bb88ac2f77b5c330a5de9b71054f8cf171024fe09527a`
Detection ClamAV: Win.Dropper.Remcos-10024288-0 Obfuscation or payload: likely Carved artifact entropy is 7.80, consistent with packed or encrypted content.
`emf_00.emf`	ooxml-emf	OOXML EMF part: word/media/image1.emf	5448 bytes
SHA-256: `a97289c539d49ea507b0c63f01aa272eb7e42729a7c6e21c0cd25f98a670658f`

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