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

Static analysis result for SHA-256 96f84c40f83ec495…

MALICIOUS

Office (OLE) / .DOC

891.0 KB First seen: 2023-08-30
MD5: ad70a8133692468a37297c0c2c339257 SHA-1: fe7cc13a2a55056d1e0e08accf46ab40ab0c2ae8 SHA-256: 96f84c40f83ec4952e32fa4784cc976876cf7c95608de4a68455db419cf43395
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical heuristic firing for CVE-2017-11882 indicates that the embedded Equation Editor object contains a payload designed to exploit this known vulnerability. This technique is commonly used to achieve arbitrary code execution on the victim's machine, often leading to the download and execution of further malicious stages.

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
9da87ff175da6fe7cb3916470f1785a5541116a4483482fa4b67230e58734b87
ole-package OLE Ole10Native stream: OlE10nAtivE 903080 bytes