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

Static analysis result for SHA-256 501930a672d0a408…

MALICIOUS

Office (OOXML) / .XLSX

728.2 KB Created: 2024-03-25 10:30:17 UTC Authoring application: Microsoft Excel 12.0000
MD5: d927f0c07f0f70f786256b1e7aa6e7fc SHA-1: 2749409fe2edde077f40b231a9a94e5c7097fff8 SHA-256: 501930a672d0a408bcd4d9b8af8cd21a09f33da99acd70e013807b87acc4408b
100 Risk Score

Malware Insights

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

The sample is an Excel file containing an embedded OLE object identified as an Equation Editor. This is a common technique used to exploit vulnerabilities, such as CVE-2017-11882, to achieve arbitrary code execution. The presence of a NOP sled further suggests shellcode intended for exploitation.

Heuristics 3

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/DD8.ioG contains the Equation Editor CLSID, the legacy component exploited by CVE-2017-11882, CVE-2018-0802, and CVE-2018-0798.
  • NOP sled detected high SC_NOP_SLED
    Found 20+ consecutive 0x90 bytes
  • 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
7d259c7546aa993b65c994235fce91b8c9f79a957011ae1084ecbf31ca54f43b		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/DD8.ioG 1014272 bytes
ooxml_oleobject_00_ole10native_00.bin
90596fd004c86479d707d08fcd56a387ad04030d0e9a1aad4f739ca933c5aa2b		 ole-package OOXML xl/embeddings/DD8.ioG Ole10Native stream: OLe10NaTiVe 1003999 bytes

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