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

Static analysis result for SHA-256 0096e380996a5c88…

MALICIOUS

Office (OLE) / .XLS

1.07 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-01-10
MD5: f3821f00986bcfeae38622179fc49f5c SHA-1: 7670312721cbc16da3655a5a08d62e876dc31aef SHA-256: 0096e380996a5c8896055aa0543c3f51bbebd5c1ea8178da1d67691a975cdbf7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1559.002 Component Object Model Hijacking T1187 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. The presence of an OLE object containing this exploit payload strongly suggests the file is designed to leverage this vulnerability for initial execution. No VBA macros were found to be executable, and the document body was not parsable.

Heuristics 5

  • 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.
  • x86 GetPC stub (CALL $+5; POP EBP) high SC_GETPC_CALL
    x86 GetPC stub (CALL $+5; POP EBP)
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 4

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
49211c49e92e783a29bd20e4981ba551e3b0a9771c40ab3d7903ea2693f95cc5		 ole-package OLE Ole10Native stream: MBD0A8CA1FA/Ole10Native 30803 bytes
ole10native_03.bin
f81b5dc0f134bff67b32850863689811e3ff1dad6ed5cd918403c20cc4d6ab1e		 ole-package OLE Ole10Native stream: MBD0A8CA1FF/Ole10Native 30803 bytes
ole10native_04.bin
3308c9de2de703b6ef60d245db7a6b6fc12f62960559ae93ef863fd8db0da748		 ole-package OLE Ole10Native stream: MBD0A8CA202/Ole10NATIVE 2053 bytes

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