Office (OLE) / .DOC malware analysis — malicious · 773043272bce62c6

MALICIOUS

Office (OLE) / .DOC

1.42 MB First seen: 2022-11-23

MD5: e72556802567eb484d37df047935b44a SHA-1: 469eb62221bda376bee873a2e26ce12c1d3b4a00 SHA-256: 773043272bce62c67e09099f90c30af62224379d05c45eee26a1682de23d0276

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment 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. The presence of an embedded OLE object, specifically ole10native_00.bin, further supports this. The heuristic SE_PASSWORD_ARCHIVE_LURE suggests the document may be part of a social engineering attempt to trick the user into opening a password-protected archive, which is a common delivery method for malware.

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` `6b7750879d540329b35be209bce01b5ed232ecc960ee78b52598d5d20f7585a1`	ole-package	OLE Ole10Native stream: ole10NaTiVe	1478257 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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