Office (OOXML) malware analysis — malicious · b92ab448b0492ccb

MALICIOUS

Office (OOXML)

844.8 KB Created: 2014-12-12 13:58:00 UTC Authoring application: Microsoft Office Word 12.0000 First seen: 2015-03-15

MD5: dec3cd62bc170e7eeac155ca593c64d9 SHA-1: a2e2b488cbdfd8f7afadb41e21f9f58cf04fffdb SHA-256: b92ab448b0492ccb87943b69718d6b1d1828401ab9087c42723a945ca36f5a36

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1027 Obfuscated Files or Information

The sample is a malicious Office document containing embedded OLE objects. One heuristic indicates that an 'Ole10Native' package drops an auto-executable payload named 'abuser1337.scr'. This suggests the document is likely a lure to trick the user into opening it, leading to the execution of a malicious screen saver file.

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)

Extracted artifacts 15

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	285184 bytes
SHA-256: `81b1e3d3599b5defa47dc6556855d719e23a4595e1531914e8ee572c25a83ee5`
`ooxml_oleobject_00_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native	280373 bytes
SHA-256: `18afceb5f2924c266c028892a41370b1442c47e985eba38008ab2b73be621e80`
`ooxml_oleobject_01.bin`	ooxml-ole-object	OOXML embedded OLE part: word/embeddings/oleObject5.bin	285184 bytes
SHA-256: `e8e35181655062fa829ed81dfddc5134dee28236c216368b49ea7c14bcc6394c`
`ooxml_oleobject_01_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject5.bin Ole10Native stream: Ole10Native	280352 bytes
SHA-256: `a953f1395ca6afc7950f073c786b2713f9b7e6dffa9060f514da51f835063fc3`
`ooxml_oleobject_02.bin`	ooxml-ole-object	OOXML embedded OLE part: word/embeddings/oleObject4.bin	285184 bytes
SHA-256: `f14c0e36d7f5ec27b4455c879c4f2810704ef4c5b208d1aeeb6e410150d4d6a6`
`ooxml_oleobject_02_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject4.bin Ole10Native stream: Ole10Native	280334 bytes
SHA-256: `20dee08eac7018ffa37d93ab71b6b163e126d01c18a34382f9876fb12f215c90`
`ooxml_oleobject_03.bin`	ooxml-ole-object	OOXML embedded OLE part: word/embeddings/oleObject2.bin	285184 bytes
SHA-256: `23b7fb9edde0bf36b1f7d89c57afa5871faea5f056c4cbd0e3881969b3905ab2`
`ooxml_oleobject_03_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject2.bin Ole10Native stream: Ole10Native	280364 bytes
SHA-256: `79584630032de0d76450ea4578599633d414c786b3a9f9a5a1bece62d6502f58`
`ooxml_oleobject_04.bin`	ooxml-ole-object	OOXML embedded OLE part: word/embeddings/oleObject3.bin	285184 bytes
SHA-256: `e9938406203006bddb3c6a86709ae85c7a337ad24e3f699e08820a0864dff8bb`
`ooxml_oleobject_04_ole10native_00.bin`	ole-package	OOXML word/embeddings/oleObject3.bin Ole10Native stream: Ole10Native	280400 bytes
SHA-256: `1fa0eefd5e46e373f92759f76d54a45917489894c714552d6911267b08cff70a`
`emf_00.emf`	ooxml-emf	OOXML EMF part: word/media/image1.emf	5016 bytes
SHA-256: `94debb0a77c23c35a66878ece76388dc4d5c1b0e1df656e7250eef303300f3db`
`emf_01.emf`	ooxml-emf	OOXML EMF part: word/media/image4.emf	5060 bytes
SHA-256: `5a5c0c676c7d1aa7797225b8e1b259a4352d8f4212ecd668298b378c79287f01`
`emf_02.emf`	ooxml-emf	OOXML EMF part: word/media/image5.emf	5084 bytes
SHA-256: `1f40bf6b03e9abfe06f6746eb2882be7fcee7a8506a3416e10933f8752645f36`
`emf_03.emf`	ooxml-emf	OOXML EMF part: word/media/image3.emf	5036 bytes
SHA-256: `690bd839c723a9dcadaa961ead9515751d44b87211d95603210d5f55700be671`
`emf_04.emf`	ooxml-emf	OOXML EMF part: word/media/image2.emf	5012 bytes
SHA-256: `9d2dbc166a7f248c16bf5489e6e3e444aa875e21536cf94d078d042607534630`

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