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

Static analysis result for SHA-256 07e5abae4cf9fa42…

MALICIOUS

Office (OLE) / .XLS

397.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2026-06-04T05:00:00+00:00
MD5: ac12f61f58259b8c80deb93ef20508b6 SHA-1: e4dc265331913492314f9d7f67b12665df4a4736 SHA-256: 07e5abae4cf9fa4273789d99dee98dbe6344b3ac401d03f25a06b63509f1e98a
108 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical heuristic firing for CVE-2017_11882_EQUATION_OLE10NATIVE indicates that the file contains a malicious Equation Editor OLE object exploiting this specific vulnerability. The VBA macros themselves do not contain executable statements, suggesting the exploit is directly embedded. This technique is commonly used to achieve arbitrary code execution.

Heuristics 3

  • 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.
  • VBA project contains no executable statements low OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes
ole10native_00.bin
0eefa24d3f7f33e7ecf3a30ade68fa245dce11e299b016ecdd277405182b866f		 ole-package OLE Ole10Native stream: MBD00C71F3F/OLE10NATiVE 2527 bytes

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