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

Static analysis result for SHA-256 aa992303965a1c61…

MALICIOUS

Office (OLE) / .DOC

2.28 MB First seen: 2022-10-04
MD5: 59b6cb510b1c94abfab2f61935084705 SHA-1: af218e1e8e72b7e4bba1cf5e71d71fd5edee06be SHA-256: aa992303965a1c618e86562c7ac240f3283b2b4a3e240ae1362b062d648ecefa
102 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model T1204.002 Malicious File

The critical heuristic firing for CVE-2017_11882_EQUATION_OLE10NATIVE indicates the exploitation of a known vulnerability in Microsoft Equation Editor. This exploit typically embeds a secondary payload within the OLE object, which is then executed. The presence of the ole10native_00.bin artifact further supports this finding.

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
e6d6750f5b229237d15217140e1e91cd3baa4519146d3609ffea332c9d1f993e
ole-package OLE Ole10Native stream: Ole10nATIVE 2374175 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.