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

Static analysis result for SHA-256 f572c8fd7544a5f5…

MALICIOUS

Office (OLE) / .DOC

920.5 KB First seen: 2022-11-03
MD5: d602c2fedc1727c38c70d79da0b0a2f9 SHA-1: 31b937894f40facd31a2f54b1ec9be1298d61e46 SHA-256: f572c8fd7544a5f577277ade13c35bbde39b7e5b76ecd820a26a80c773d412ed
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical heuristic firing for CVE-2017-11882 indicates the exploitation of a vulnerability within the Equation Editor OLE object. This technique is commonly used to achieve arbitrary code execution. The embedded OLE object likely contains a secondary payload, though no scripts were extracted to detail its specific actions.

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
525e9bde318e3fdb4846233cd3a1dbf4b730e262f4c08db872087d53d1dbc42e		 ole-package OLE Ole10Native stream: oLe10NATiVE 932656 bytes

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