Office (OLE) / .DOC malware analysis — malicious · 0a75da683548f5f1

MALICIOUS

Office (OLE) / .DOC

1.49 MB First seen: 2022-06-15

MD5: 46e85fbc2b36963b688c75ce55f458bf SHA-1: 5b02d5a447c19c1e5eae959618340a1a18772a89 SHA-256: 0a75da683548f5f1c528b23935cb99d96c029d5b5bbc9e7d3cda78b2dad4e977

142 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The sample is a Microsoft Office document containing an embedded Equation Editor object. Heuristics indicate exploitation of CVE-2017-11882, which allows for arbitrary code execution. The embedded artifact 'ole10native_00.bin' is likely the second-stage payload delivered by 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.
Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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` `d0a3e3625927a24a610dd2ef82980cc754cf679ccfe7aacd2d3978e5d5d54c7d`	ole-package	OLE Ole10Native stream: Ole10NATIvE	1552872 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

Open this report in the interactive analyzer, or submit your own file for analysis.