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

Static analysis result for SHA-256 dd63a0753a83ec29…

MALICIOUS

Office (OLE) / .XLS

393.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2022-11-09
MD5: 52823158c924dd0da5e28eab2d9a9afb SHA-1: dc7d17c0c661853b62a9d999e0be8272ef43b630 SHA-256: dd63a0753a83ec2919c9f8650a323c658f3eb36a3f21a9b13eee2056a2664582
108 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample contains an embedded Equation Editor OLE object that is known to be vulnerable to CVE-2017-11882. This vulnerability allows for arbitrary code execution when the object is loaded. No VBA macros were found to be executable, and the document body was not sufficiently extracted to determine a specific lure.

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
2f27e44dca2f77366c68f56b215f5fc03d882ad5b9e418a2f999f8918a7b7ed1		 ole-package OLE Ole10Native stream: MBD01AAAF06/OLe10nAtIVE 1462 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.