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

Static analysis result for SHA-256 c822c465c2bbdc12…

MALICIOUS

Office (OLE) / .DOC

902.0 KB First seen: 2022-09-21
MD5: 14e71bfacad56de6166395c83933c699 SHA-1: 1fa0a4a175052f723870ec09d170c412db0ebf59 SHA-256: c822c465c2bbdc12ebf0c636ca46191a91b897286bd551c191d2eaca12d82cce
100 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment

The critical heuristic firing for CVE-2017_11882_EQUATION_OLE10NATIVE indicates the presence of a known exploit within an Equation Editor OLE object. This exploit is commonly used to execute arbitrary code, likely to download and run a second-stage payload. The file's SHA256 hash is included as a primary indicator.

Heuristics 2

  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ole10native_00.bin
4c755f1cef6ded01c478811ef714ea2d28c9666de96b46c52bb8cdeac31a2b72
ole-package OLE Ole10Native stream: ole10NaTiVE 913447 bytes