Office (OLE) / .DOC malware analysis — malicious · 4c6be537ed0cff29

MALICIOUS

Office (OLE) / .DOC

1.94 MB First seen: 2022-09-27

MD5: 56172135c2fb3510e8cf57cf7372fd29 SHA-1: 5e4548115567d4f4e3ae716d3e32a162f2402b89 SHA-256: 4c6be537ed0cff29b1e176c8649de4ba38ef5078c620eb807bab68df773ea46d

142 Risk Score

Malware Insights

MITRE ATT&CK

T1559.001 Component Object Model Hijacking T1204.001 Malicious Link

The file contains an embedded Equation Editor OLE object that is known to be exploited via CVE-2017-11882. This vulnerability allows for the execution of arbitrary code when the object is processed. The extracted artifact 'ole10native_00.bin' is the payload associated with this exploit.

Heuristics 4

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.
x86 GetPC stub (CALL $+5; POP EBP) high SC_GETPC_CALL

x86 GetPC stub (CALL $+5; POP EBP)
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` `6aebea423444397ea811d9d4affc59bea71bd0415dfc08158b75ca7ecfd282a0`	ole-package	OLE Ole10Native stream: oLe10NATIVe	2015535 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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