Office (OOXML) / .XLSM malware analysis — malicious · 8d64a012716a426a

MALICIOUS

Office (OOXML) / .XLSM

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

MD5: 32855de741eb42afe866830b1f9a6e6e SHA-1: 8322d23aef67fed8b201b9a679b21e4aa8143fe1 SHA-256: 8d64a012716a426a5abb3fa295dfe66b8787058fd1a7736ef608ced25921c2fb

188 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.002 Spearphishing with Other T1059.001 PowerShell

The file is an XLSM document containing a Workbook_Open macro, indicating automatic execution upon opening. The presence of a CreateObject call and a NOP sled suggests obfuscation and potential payload execution. The document body contains text related to a price quote template, which is likely a lure to trick the user. The extracted URL points to a legitimate template site, but its inclusion in a malicious document warrants attention.

Heuristics 6

NOP sled detected high SC_NOP_SLED

Found 20+ consecutive 0x90 bytes
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

URL 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` `7f483a2ed44ca450aefe4e7b01bbf09b8266850e88e29c1395171a9205440783`	vba-macro	oletools.olevba.extract_macros (decoded VBA source from OOXML)	5563 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` `5082b7618528be2b27df54304d5ae694b2a66b8a2432197e9d91d17832cfd037`	vba-project	OOXML VBA project: xl/vbaProject.bin	25600 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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