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

Static analysis result for SHA-256 ddb53f8b8948c01d…

MALICIOUS

Office (OLE) / .XLS

569.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2022-11-16
MD5: baba755e9a1dae9b024f1f4767a06ff5 SHA-1: 00a2e5781ee2792b31593c711de9791367eb531a SHA-256: ddb53f8b8948c01d64f57d880192cdb7222e6867dfe0b17f6584d7b79332d313
108 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical heuristic firing for CVE_2017_11882_EQUATION_OLE10NATIVE indicates the exploitation of a known vulnerability in Microsoft Equation Editor. This vulnerability is commonly used to execute arbitrary code, likely to download and run a secondary payload. The VBA macros are present but do not contain executable statements, suggesting the exploit is directly embedded within the OLE object.

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
85fb0b7a78aa4cfaddf1d849596dd30b5446063380980250f84a4c4e2f1b2fe5		 ole-package OLE Ole10Native stream: MBD000CB44C/OlE10NatIvE 1916 bytes

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