Office (OOXML) / .XLSX malware analysis — malicious · a2369537aad92d9f

MALICIOUS

Office (OOXML) / .XLSX

171.6 KB Created: 2021-04-21 12:57:18 UTC Authoring application: Microsoft Excel 15.0300

MD5: 77a37ee41877d3af8afd7d09cca969c9 SHA-1: 7885d0c3730add0d2693b148312c5e66bcf0279b SHA-256: a2369537aad92d9febb1353752bf07d7f85e5592071a6f417c9ba24a3d36aba8

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.002 Spearphishing Attachment

The sample is an Excel document containing a Workbook_Open macro, which is a common technique for executing malicious code upon opening. The macro uses CreateObject, indicating it likely attempts to download and execute a second-stage payload from one of the provided URLs. The document body text explicitly directs the user to 'VIEW OR PRINT', further encouraging interaction with the malicious content.

Heuristics 6

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
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://sisprofamilia.sistemasvip.com.br/profmobile/vendor/doctrine/collections/docs/E6owcrdAVifHpML.php
- https://4startups.co.za/wp-content/themes/twentytwentyone/template-parts/content/2RqyuNia.php
- https://ecoosa.com/RAJ43EmVvrpkf.php
- https://grupo-gessa.com/YvSbL3zjYQ.php
- https://trijayatower.com/wp-content/plugins/creame-whatsapp-me/public/css/3hOcD4Ykt.php
- https://enescanplastik.com/dosya/plugins/wp-analytify/views/default/6zOcE70C74.php
- https://guidewire.motifdemos.com/node_modules/three/src/animation/tracks/2aE3jvHY.php

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `c3b4feb0dc4b2b307def3a006b6b7080921ca01b2d58ddde31f8220818b312b7`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	9704 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.
`vbaProject_00.bin` `9d783459f24b1f1cd10a8af3a17589b50393fafebe3054e52e08f26ff0347f17`	vba-project	OOXML VBA project: xl/vbaProject.bin	53760 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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