Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 053d38a898213745…

MALICIOUS

Office (OOXML)

12.6 KB Created: 2020-09-29 09:23:15 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2020-10-03
MD5: 4032c2803bb34c4e452aca64ca7532c0 SHA-1: 197426e060e6bad8cf2183a3224f60b082c1a570 SHA-256: 053d38a898213745d69a54958cd841429ea7fab07a14c7f033ca2a4a230f522d
188 Risk Score

Heuristics 5

  • Spreadsheet DDE link launches a dangerous command critical OOXML_SPREADSHEET_DDE_MALICIOUS
    Excel workbook contains an externalLinks/ddeLink entry whose ddeService/ddeTopic launches a dangerous executable. This is SpreadsheetML DDE command execution, distinct from WordprocessingML DDE field instructions.
  • VBA project inside OOXML medium 3 related findings OOXML_VBA
    Document contains a VBA project — VBA macros present
  • Potential Shell call in VBA critical OLE_VBA_SHELL
    Potential Shell call in VBA
    Matched line in script
    Call Shell("cmd.exe /c calc.exe")
  • cmd.exe reference in VBA high OLE_VBA_CMD
    cmd.exe reference in VBA
    Matched line in script
    Call Shell("cmd.exe /c calc.exe")
  • Auto_Open macro low OLE_VBA_AUTO
    Auto_Open macro
    Matched line in script
    Sub Auto_Open()

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 699 bytes
SHA-256: 3e205f932093e6ea48dd9ca97aac96204b5b808f5722c403452bb2c8b542c7f2
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Module1"
Sub Auto_Open()
Call Shell("cmd.exe /c calc.exe")
End Sub

Attribute VB_Name = "ThisWorkbook"
Attribute VB_Base = "0{00020819-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True

Attribute VB_Name = "Feuil1"
Attribute VB_Base = "0{00020820-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True
vbaProject_00.bin vba-project OOXML VBA project: xl/vbaProject.bin 10752 bytes
SHA-256: 100bdccf0d91f34854047e3193b4fe89c4e1df731ccb6fcd7c5604bab0596517

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