Office (OLE) / .DOC malware analysis — malicious · fb336ee3e9bac3db

MALICIOUS

Office (OLE) / .DOC

1.95 MB First seen: 2022-06-15

MD5: 354d110758c1c2dc9c26603bb8a2b3b9 SHA-1: ac1a458dfcf4f7e60428ccc7c72e09565fd4365a SHA-256: fb336ee3e9bac3dba7985549faa8772f55962e7f134fc28405e5089f0f8ee942

102 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1559.002 Component Object Model Hijacking

The file contains an embedded Equation Editor OLE object that is known to be vulnerable to CVE-2017-11882. This vulnerability allows for the execution of arbitrary code when the object is opened. The extracted artifact 'ole10native_00.bin' is the payload associated with this exploit. The document body was truncated and did not provide further context on the lure.

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.

Filename	Kind	Source	Size
`ole10native_00.bin` `d3eaa775bdff8888cffd4230a1d489e0a46c7fb74b60d9ca3d2313f3acbd5981`	ole-package	OLE Ole10Native stream: oLe10NATIVE	2026056 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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