Office (OOXML) / .XLSM malware analysis — malicious · 52123ddbbb1ca64d

MALICIOUS

Office (OOXML) / .XLSM

169.3 KB Created: 2004-08-16 18:44:14 UTC Authoring application: Microsoft Excel 15.0300

MD5: a2c10fdcb9a1c732e9a2f60061577fcf SHA-1: 9a6e6ecb8440beff504d2b525289815415d5b71a SHA-256: 52123ddbbb1ca64d78b18991637603310abaf9a93bcc9c345fcd2f50016e25b3

148 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 a Workbook_Open macro, which is a common technique for executing malicious code upon opening. The document body contains text related to a price quote template, suggesting a social engineering lure. The presence of a CreateObject call and an embedded URL to a quote template further supports this. No specific scripts were extracted, but the heuristics indicate the presence of VBA macros designed to execute.

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
External hyperlinks (1) low OOXML_EXTERNAL_HYPERLINKS

Document contains 1 external hyperlink — clickable URLs are stored as external relationships. First target: https://www.vertex42.com/ExcelTemplates/quote-template.html

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `f7a5696686a6185e54eb421d793beae001ea04199ed109f9200e7142cb68c73d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	10034 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.
`vbaProject_00.bin` `596ae7186e3fbc5c7657b40af3672387b9646f10c88cc675597e22a75b1dc0a8`	vba-project	OOXML VBA project: xl/vbaProject.bin	44032 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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