Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 a71c751affad0adb…

MALICIOUS

Office (OLE) / .XLS

79.5 KB
MD5: c024ba013e64aa80b102e2e9ff544e61 SHA-1: 207958b6a6fa691e205f21991802133277cdab58 SHA-256: a71c751affad0adb3f9ef746687b76f61f53e103da376bec610e9ef4433d27a7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The file is identified as malicious by ClamAV with the signature Win.Tool.Shellcode_14052-1, indicating it contains shellcode. A NOP sled was also detected, which is commonly used to buffer shellcode execution. Although no VBA macros could be extracted, the presence of shellcode strongly suggests the file's purpose is to execute arbitrary code on the target system. The embedded URLs are confirmed benign and do not appear to be directly related to the malicious functionality.

Heuristics 4

  • ClamAV: Win.Tool.Shellcode_14052-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Tool.Shellcode_14052-1
  • NOP sled detected high SC_NOP_SLED
    Found 20+ consecutive 0x90 bytes
  • Unsupported Office format for VBA extraction info OFFICE_FORMAT_UNSUPPORTED
    olevba could not extract VBA macros (AttributeError); format-agnostic byte-level scans still ran. Likely legacy, encrypted, or malformed OLE/OOXML — re-scanning the same bytes will yield the same outcome.
  • 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://www.microsoft.com
    • https://www.verisign.com/rpa
    • http://ocsp.verisign.com/ocsp/status0
    • https://www.verisign.com/rpa0
    • http://crl.microsoft.com/pki/crl/products/CodeSignPCA.crl0

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