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

Static analysis result for SHA-256 97391717fe08b39a…

MALICIOUS

Office (OLE) / .DOC

880.0 KB First seen: 2022-08-29
MD5: b79fc240e6feb6fe944dea940e7be22c SHA-1: 432d0693b94339cd771a3664833277e4cda2fcd2 SHA-256: 97391717fe08b39a5a4771793f7731e659e715ebcf5dae4d7f0f3810e221d83d
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical heuristic firing for CVE_2017_11882_EQUATION_OLE10NATIVE indicates the presence of a known Equation Editor exploit. This vulnerability allows for arbitrary code execution when the document is opened, leading to the delivery of a malicious payload. No document body or script content was available for further analysis.

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
ea8f460c387fc40a3ec032dbec4ada384235126c59b711e295197492d011cd9e
ole-package OLE Ole10Native stream: OLe10natIvE 891745 bytes