Office (OOXML) / .XLSM malware analysis — malicious · fe3d4647da281e7f

MALICIOUS

Office (OOXML) / .XLSM

164.1 KB Created: 2021-04-21 14:10:50 UTC Authoring application: Microsoft Excel 15.0300

MD5: 599ce087cc5f550db5e6af6133b6be19 SHA-1: 4025f5bfe38452647ce0796e3820960702d90b41 SHA-256: fe3d4647da281e7f5063094c332b3896cff4a1a4d021d1c00295e674ae7a7be9

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1059.001 PowerShell

The sample is an XLSM file containing a Workbook_Open macro, indicating it is designed to execute malicious code upon opening. The macro uses CreateObject to likely download and execute a second-stage payload from one of the provided URLs. The Environ() call suggests potential environment variable manipulation. The presence of a Workbook_Open macro and CreateObject points to a downloader or droppper functionality.

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://streichersquickprint.biz/css/vendor/_notes/TED5iyLtzczFAV.php
- https://vanesadonisi.com/wp-content/themes/brando/templates/archive-header/rUlGhpz7vj8KWBg.php
- https://visualpro.planaweb.com.br/admin2020/themes/default/js/bundle/sqekPV3Pi9rtdRZ.php
- https://www.dosashop.com/blog/wp-content/uploads/2020/01/ji4Ss8AIFkrdQ.php
- https://mueblesromero.net/vmfiles/hHXXLCcJv0JgsF.php
- https://partners.jpidigitalpay.in/bower_components/jquery/external/sizzle/dist/XWzOPMfraKRn.php
- https://meaningful-marriage.co.za/wp-includes/sodium_compat/namespaced/Core/ChaCha20/Hp8nneMHunkah.php
- https://rms.adeelchaudry.pk/util/XvwYAL5dS0EPsi.php
- https://mindfulnessauthors.com/wp-includes/js/tinymce/plugins/charmap/gAvIGfBI.php

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `8d3f677fa9a805a31829ebf8474ab64e7c3618b70a9d5a6343439855a8e242d3`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	8884 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` `5d55243f4e3401fb9df92316245043d8397a57312f7209a253755c89df837724`	vba-project	OOXML VBA project: xl/vbaProject.bin	51712 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.