Office (OOXML) / .DOC malware analysis — malicious · ccbda8a84dbeda1a

MALICIOUS

Office (OOXML) / .DOC

1.06 MB Created: 2016-02-27 13:49:00 UTC Authoring application: Microsoft Office Word 14.0000

MD5: 8b8e286f64a4635e12d6d728a5669d51 SHA-1: c75323c29e9cf4cdc5b91c607f439b74fcfc6398 SHA-256: ccbda8a84dbeda1a66780c76fd9f507778c9fb992c7eee87e99cc3ca314009ee

268 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Submitted Malware T1059.005 Command and Scripting Interpreter: Visual Basic

The sample contains VBA macros, including a Document_Open macro that utilizes the Shell() function, indicating an attempt to execute external code. The presence of an embedded OLE object with Ole10Native indicators strongly suggests exploitation of CVE-2026-21514. The primary intent appears to be downloading and executing a second-stage payload through this embedded object.

Heuristics 9

OOXML Ole10Native with payload/link indicators — possible CVE-2026-21514 high CVE likely CVE_2026_21514

Office document contains embedded OLE (word/embeddings/oleObject1.bin) with Ole10Native plus executable, PE, or risky remote-link indicators. This is a likely CVE-2026-21514 exploitation shape.
Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
Suspicious extracted artifact high 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.
VBA project inside OOXML medium OOXML_VBA

Document contains vbaProject.bin — VBA macros present
Embedded OLE object medium OOXML_OLE_OBJECT

Document contains an embedded OLE object
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)
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 https://ezgif.com/resize��
- http://schemas.microsoft.com/office/word/2010/wordprocessingCanvas
- http://schemas.openxmlformats.org/markup-compatibility/2006
- http://schemas.openxmlformats.org/officeDocument/2006/relationships
- http://schemas.openxmlformats.org/officeDocument/2006/math
- http://schemas.microsoft.com/office/word/2010/wordprocessingDrawing
- http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing
- http://schemas.openxmlformats.org/wordprocessingml/2006/main
- http://schemas.microsoft.com/office/word/2010/wordml
- http://schemas.microsoft.com/office/word/2010/wordprocessingGroup
- http://schemas.microsoft.com/office/word/2010/wordprocessingInk
- http://schemas.microsoft.com/office/word/2006/wordml
- http://schemas.microsoft.com/office/word/2010/wordprocessingShape

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `54d526fc9b6b75533b8ee577134776c98b60404b9b153f8a9d8c27dae36a823c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	4370 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`ooxml_oleobject_00.bin` `50ff4e1a1acef85b97408c84a774e9c620a8ba9b373144483aab8025595295b0`	ooxml-ole-object	OOXML embedded OLE part: word/embeddings/oleObject1.bin	997888 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.82, consistent with packed or encrypted content.
`ooxml_oleobject_00_ole10native_00.bin` `4c26bd4dd861f5b7b99a9812a2ead9cbca91f5c18753b5ef2de1a19aa3a63b07`	ole-package	OOXML word/embeddings/oleObject1.bin Ole10Native stream: Ole10Native	987300 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.86, consistent with packed or encrypted content.
`vbaProject_00.bin` `740d3b00eb22a9c5e3a110e285fdc6464be08e321dffdcd4ee5653bfd2e10b6d`	vba-project	OOXML VBA project: word/vbaProject.bin	17408 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`emf_00.emf` `4a4ca0eaa5e6342cc0fad5c9c48871f42b93f5f1becd7d6de0099ea595e0f349`	ooxml-emf	OOXML EMF part: word/media/image6.emf	5108 bytes

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