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

Static analysis result for SHA-256 adafa88ff390dd96…

MALICIOUS

Office (OLE) / .DOC

2.18 MB First seen: 2022-05-26
MD5: b3c53666aa5f73d0ec57529b6ef8f969 SHA-1: 6830d094ae03c8869d3f1b65aa4d70a64f71d5cd SHA-256: adafa88ff390dd96804a508fa1d08b67aed99ce6f9685c44c1bc6a5a8778378e
102 Risk Score

Malware Insights

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

The presence of an Equation Editor OLE object is a strong indicator of a potential exploit. This object is often used to deliver malicious payloads by leveraging vulnerabilities within the Equation Editor component. No specific scripts or URLs were extracted, limiting further analysis of the payload delivery mechanism.

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 2270110 bytes
SHA-256: a91a32f24d8b25003b4df5b35277caaf62481ca82649d736ba16d2ad8465b7f6
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.