Office (OOXML) / .XLSM malware analysis — malicious · e968040290a071e8

MALICIOUS

Office (OOXML) / .XLSM

27.9 KB Created: 2021-01-08 03:32:18 UTC Authoring application: Microsoft Excel 16.0300

MD5: e88b980155ab87f1b63010075c4ecfbf SHA-1: 102ccc554afbe28a88eecb0b4a1640059b8ede84 SHA-256: e968040290a071e89a4384768411d18471700bfb793f41cd930f5ed29c1478a8

188 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.002 Spearphishing Attachment

The file is an XLSM document containing VBA macros, specifically triggering Document_Open and Workbook_Open events. The 'EXTRACTED_FILE_STATIC_TRIAGE' heuristic indicates a long encoded blob and auto-execution, suggesting the VBA code is designed to download and execute a second-stage payload. The document body presents a personal profile and job objective, acting as a lure to encourage macro execution. The presence of an external hyperlink to a LinkedIn profile is noted as a potential, though benign, indicator.

Heuristics 7

Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_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
External hyperlinks (1) low OOXML_EXTERNAL_HYPERLINKS

Document contains 1 external hyperlink — clickable URLs are stored as external relationships. First target: https://www.linkedin.com/in/laurasilvae4890/
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/spreadsheetml/2006/main
- http://schemas.openxmlformats.org/officeDocument/2006/relationships
- http://schemas.openxmlformats.org/markup-compatibility/2006
- http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac
- http://schemas.microsoft.com/office/spreadsheetml/2014/revision
- http://schemas.microsoft.com/office/spreadsheetml/2015/revision2
- http://schemas.microsoft.com/office/spreadsheetml/2016/revision3
- https://www.linkedin.com/in/laurasperandio4890/_________________

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `620130ccceb8c96d885f0fa285231318e5f534c0ccb36b1dd239c74fdef204b5`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	12241 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.
`vbaProject_00.bin` `8c549d50dc26ef7cc43bcd5f988ea8824a35cc8c54515fee175cda63127a3509`	vba-project	OOXML VBA project: xl/vbaProject.bin	34304 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.
`emf_00.emf` `0267043ae8226cfe96b45529d3a701b5936758f28b966c55c3bbe76c4bf606f2`	ooxml-emf	OOXML EMF part: xl/media/image1.emf	1108 bytes
`emf_01.emf` `369338825a91500392b48326331c6451b0494d846e45e388aea87d357464b35a`	ooxml-emf	OOXML EMF part: xl/media/image2.emf	1108 bytes

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