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

Static analysis result for SHA-256 ee401fae278864a1…

MALICIOUS

Office (OLE) / .DOC

685.0 KB First seen: 2026-05-11
MD5: 6173b5318bd016bff0db92ad044e6f70 SHA-1: 4bdf77096a33e959057b32ab0c4669806ba56406 SHA-256: ee401fae278864a191d300f6c380e6f8a547ea1bfa6f849ffa01a3ae21ca0877
102 Risk Score

Malware Insights

MITRE ATT&CK
T1559.002 Component Object Model Hijacking

The primary indicator of maliciousness is the presence of an Equation Editor OLE object within the document. This object is frequently used to exploit vulnerabilities in Microsoft Office, such as CVE-2017-11882, to execute arbitrary code. No further scripts or network indicators were extracted from this sample.

Heuristics 3

  • Equation Editor Ole10Native payload — CVE-2017-11882 critical CVE likely CVE_2017_11882_EQUATION_OLE10NATIVE
    An embedded Microsoft Equation 3.0 object (CLSID 0002CE02-0000-0000-C000-000000000046) carries an Ole10Native packager stream instead of the normal Equation Native/MTEF data. This is the weaponized Equation Editor RCE delivery shape used by CVE-2017-11882 / CVE-2018-0802 maldocs. The payload (font-record overflow + shellcode) is frequently encrypted and the stream name case-scrambled to evade scanners, but an Equation object holding an Ole10Native stream has no benign use.
  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Contains Equation Editor object — related to CVE-2017-11882 / CVE-2018-0802 exploitation, but CLSID presence alone is not the malformed MTEF exploit primitive.
  • Suspicious extracted artifact info 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ole10native_00.bin ole-package OLE Ole10Native stream: OlE10NativE 693475 bytes
SHA-256: 24bc19353a0565943fb9725e8c6ab82b43b0ca27acee968be5a9899664132fbb
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.