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

Static analysis result for SHA-256 b45de69cdbab6491…

MALICIOUS

Office (OLE) / .DOC

1.14 MB First seen: 2022-07-01
MD5: e18a4356a1adb981b7952811755420d1 SHA-1: a6f61b6227b0cb605619f0b928285c992004cd95 SHA-256: b45de69cdbab649179704920a32fc937246f9fb7944babc0b0de1e5b8f1bace1
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1559.001 Component Object Model and Distributed Component Object Model

The critical heuristic firing for CVE_2017_11882_EQUATION_OLE10NATIVE indicates the exploitation of a known vulnerability in Microsoft Equation Editor. This vulnerability is typically used to execute arbitrary code, often leading to the download and execution of a secondary payload. The presence of an embedded Equation Editor OLE object further supports this attack vector.

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
63b00948c10d2e2f0853976b93a495755e56c3c892ddcf7c85de7d239170d442
ole-package OLE Ole10Native stream: Ole10NatiVE 1183081 bytes