Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 ce90ad5de8503045…

MALICIOUS

Office (OOXML)

20.1 KB Created: 2016-10-11 20:30:46 UTC Authoring application: Microsoft Excel 15.0300 First seen: 2020-05-14
MD5: ac7f7bf34ff4e76a62a1990685d3b9a5 SHA-1: 4cffbd2a09bec52afe56093ee3073e8622049fed SHA-256: ce90ad5de850304569c79ab5d197be33de1ea74c5657d1a6c8043f5dd3f475a9
128 Risk Score

Heuristics 5

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/oleObject1.bin contains the Equation Editor CLSID, the legacy component exploited by CVE-2017-11882, CVE-2018-0802, and CVE-2018-0798.
  • CVE-2018-0798 — anomalous Equation Editor native stream high CVE likely CVE_2018_0798_EQUATION_NATIVE_ANOMALY
    Embedded Equation Editor OLE data contains anomalous native stream bytes consistent with a CVE-2018-0798-style Equation Editor exploit. This is treated as likely CVE evidence because the Equation object is malformed and payload-like, but it does not match the exact public matrix-overflow byte signature.
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object
  • Suspicious extracted artifact medium 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: xl/embeddings/oleObject1.bin 4608 bytes
SHA-256: b6c50b6a8a41a2c9470bf978d73806df4e0aa72133ad1ac5cfcd734bc8ec7392
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML xl/embeddings/oleObject1.bin Ole10Native stream: olE10naTIvE 2065 bytes
SHA-256: 5a6ce0505fa4bcc140694888b559c1867617634460c6a45264fc80b94a9f6058
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL

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