Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 76e51ec36cd5824b…

MALICIOUS

Office (OLE)

142.6 KB Created: 2019-01-15 06:22:00 Authoring application: Microsoft Office Word First seen: 2019-11-20
MD5: a0bf0855177148bc67225f4f469f2f09 SHA-1: 5bba1e52f9a11098de4c450d689666330134546b SHA-256: 76e51ec36cd5824b974a8ab98d9d4960dd8d7dbf278075cac5ac933b25b0c879
90 Risk Score

Malware Insights

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

The sample contains VBA macros, including an autoopen macro, which are commonly used to initiate malicious activity. The presence of 'SC_STR_WSCRIPT' heuristic suggests the macro may leverage Windows Script Host to execute further commands or download additional payloads. The document body is heavily obfuscated and contains binary data, preventing a clear understanding of its intended lure.

Heuristics 5

  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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.
  • VBA macros detected medium 1 related finding OLE_VBA_MACROS
    Document contains VBA macro code
  • AutoOpen macro low OLE_VBA_AUTOOPEN
    AutoOpen macro
    Matched line in script
    Attribute VB_Name = "Idahowa"
Sub autoopen()
Kwachajt = Array(Plasticqu, azureaq, ROIvp, PracticalRubberChickenrh, Intranetqn, neuralvh, Jamaicatj)
  • 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/drawingml/2006/main In 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) 2874 bytes
SHA-256: a8dfb1f3908fd44c58fc250d668716ef72bc7cbd27b7017be32dde12a57e88ce
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "f24365sn"
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 = "TextBox1, 0, 0, MSForms, TextBox"

Attribute VB_Name = "Idahowa"
Sub autoopen()
Kwachajt = Array(Plasticqu, azureaq, ROIvp, PracticalRubberChickenrh, Intranetqn, neuralvh, Jamaicatj)
End Sub

Attribute VB_Name = "FalklandIslandsMalvinasaz"

Attribute VB_Name = "hackbv"

Attribute VB_Name = "Missioniu"

Attribute VB_Name = "Unbrandedic"

Attribute VB_Name = "Bordersaw"

Attribute VB_Name = "Passagejc"

Attribute VB_Name = "customizedbd"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "Michigantf"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "Avonvr"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "overridingti"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "auxiliarymp"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "Specialistqh"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "microchiprz"
Attribute VB_Base = "0{FCFB3D2A-A0FA-1068-A738-08002B3371B5}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

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