Office (OOXML) / .XLSM malware analysis — malicious · 5219e2153ee7c7ad

MALICIOUS

Office (OOXML) / .XLSM

16.0 KB Created: 2020-10-23 19:47:47 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2026-04-23

MD5: 3b3eaa7fb38a1bc3ac7d28f8782c9cc7 SHA-1: 27471ac05683f86644548152c63648d1684b167a SHA-256: 5219e2153ee7c7adb4e81b4d136ae993dc4e9fb8e94d2858c42f4844253d78a8

142 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1059.003 Windows Command and Shell T1105 Ingress Tool Transfer

The Workbook_Open macro executes upon opening the Excel file. It constructs and sends an HTTP GET request to 'http://169.254.169.254/latest/meta-data/iam/security-credentials/' to retrieve cloud instance metadata. The response text is then appended to a URL pointing to webhook.site, and another HTTP GET request is made to this constructed URL. This indicates an attempt to exfiltrate sensitive cloud credentials.

Heuristics 5

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
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://169.254.169.254/latest/meta-data/iam/security-credentials/
- https://webhook.site/6d61998b-a8fb-4e57-874d-d2e9a38bda79?roleNames=
- http://1�69.254.�

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `7446f294aa0f5ddac81c8c5b053d36c3937deaa02a38ce7cb9062bef32868728`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	1459 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` `235fd7f39dbecaad748524cb7e6e32b4507a1bbde6fb28eb1febdcbd4aec2ed7`	vba-project	OOXML VBA project: xl/vbaProject.bin	17920 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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