Malicious Office (OOXML) / .XLSX — malware analysis report

Static analysis result for SHA-256 a5880df344c03d86…

MALICIOUS

Office (OOXML) / .XLSX

627.5 KB Created: 2010-03-03 03:12:50 UTC Authoring application: Microsoft Excel 15.0300 First seen: 2022-07-01
MD5: e6bc30db8b2ddb086ce8498f2f87dbb0 SHA-1: 690084bc1c47f4a4714517ce3a103d9d6161a455 SHA-256: a5880df344c03d860194c3edd1efb363e3819f485668b10fdce1ccf26da944a7
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking T1204.002 Malicious File

The sample is an OOXML file containing an embedded OLE object identified as an Equation Editor. This is a high-severity finding, indicating a likely attempt to exploit a vulnerability within the Equation Editor component to execute malicious code. No document body text or scripts were present to provide further context on the specific lure or payload.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/pjjRPgxm.pW contains the Equation Editor CLSID, the legacy component exploited by CVE-2017-11882, CVE-2018-0802, and CVE-2018-0798.
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
ee1a65c7dd2ee32a1964120dd09e93caa85fd50fb080a34fdfe77ec183303b76		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/pjjRPgxm.pW 860160 bytes
ooxml_oleobject_00_ole10native_00.bin
34f5b420b5784d1b013593be69339be48f02c21c5b911819e908310b4886a3db		 ole-package OOXML xl/embeddings/pjjRPgxm.pW Ole10Native stream: OlE10NaTIvE 850915 bytes

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