Analysis
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max time kernel
409s -
max time network
312s -
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/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
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 behavioral3/memory/2620-0-0x0000023B85660000-0x0000023B856A4000-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 4 discord.com 7 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 1 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 1956 timeout.exe 1436 timeout.exe 4020 timeout.exe 3208 timeout.exe -
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 2944 wmic.exe -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-801765966-3955847401-2235691403-1000_Classes\Local Settings cmd.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 3040 PING.EXE -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 876 C11Setup.exe 876 C11Setup.exe 2620 GuiLoader.exe 3892 powershell.exe 3892 powershell.exe 3440 powershell.exe 3440 powershell.exe 3600 powershell.exe 3600 powershell.exe 2852 powershell.exe 2852 powershell.exe 992 powershell.exe 992 powershell.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe 876 C11Setup.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 876 C11Setup.exe Token: SeDebugPrivilege 3576 PageEditor.exe Token: SeDebugPrivilege 2620 GuiLoader.exe Token: SeIncreaseQuotaPrivilege 4100 wmic.exe Token: SeSecurityPrivilege 4100 wmic.exe Token: SeTakeOwnershipPrivilege 4100 wmic.exe Token: SeLoadDriverPrivilege 4100 wmic.exe Token: SeSystemProfilePrivilege 4100 wmic.exe Token: SeSystemtimePrivilege 4100 wmic.exe Token: SeProfSingleProcessPrivilege 4100 wmic.exe Token: SeIncBasePriorityPrivilege 4100 wmic.exe Token: SeCreatePagefilePrivilege 4100 wmic.exe Token: SeBackupPrivilege 4100 wmic.exe Token: SeRestorePrivilege 4100 wmic.exe Token: SeShutdownPrivilege 4100 wmic.exe Token: SeDebugPrivilege 4100 wmic.exe Token: SeSystemEnvironmentPrivilege 4100 wmic.exe Token: SeRemoteShutdownPrivilege 4100 wmic.exe Token: SeUndockPrivilege 4100 wmic.exe Token: SeManageVolumePrivilege 4100 wmic.exe Token: 33 4100 wmic.exe Token: 34 4100 wmic.exe Token: 35 4100 wmic.exe Token: 36 4100 wmic.exe Token: SeIncreaseQuotaPrivilege 3576 PageEditor.exe Token: SeSecurityPrivilege 3576 PageEditor.exe Token: SeTakeOwnershipPrivilege 3576 PageEditor.exe Token: SeLoadDriverPrivilege 3576 PageEditor.exe Token: SeSystemProfilePrivilege 3576 PageEditor.exe Token: SeSystemtimePrivilege 3576 PageEditor.exe Token: SeProfSingleProcessPrivilege 3576 PageEditor.exe Token: SeIncBasePriorityPrivilege 3576 PageEditor.exe Token: SeCreatePagefilePrivilege 3576 PageEditor.exe Token: SeBackupPrivilege 3576 PageEditor.exe Token: SeRestorePrivilege 3576 PageEditor.exe Token: SeShutdownPrivilege 3576 PageEditor.exe Token: SeDebugPrivilege 3576 PageEditor.exe Token: SeSystemEnvironmentPrivilege 3576 PageEditor.exe Token: SeRemoteShutdownPrivilege 3576 PageEditor.exe Token: SeUndockPrivilege 3576 PageEditor.exe Token: SeManageVolumePrivilege 3576 PageEditor.exe Token: 33 3576 PageEditor.exe Token: 34 3576 PageEditor.exe Token: 35 3576 PageEditor.exe Token: 36 3576 PageEditor.exe Token: SeIncreaseQuotaPrivilege 3576 PageEditor.exe Token: SeSecurityPrivilege 3576 PageEditor.exe Token: SeTakeOwnershipPrivilege 3576 PageEditor.exe Token: SeLoadDriverPrivilege 3576 PageEditor.exe Token: SeSystemProfilePrivilege 3576 PageEditor.exe Token: SeSystemtimePrivilege 3576 PageEditor.exe Token: SeProfSingleProcessPrivilege 3576 PageEditor.exe Token: SeIncBasePriorityPrivilege 3576 PageEditor.exe Token: SeCreatePagefilePrivilege 3576 PageEditor.exe Token: SeBackupPrivilege 3576 PageEditor.exe Token: SeRestorePrivilege 3576 PageEditor.exe Token: SeShutdownPrivilege 3576 PageEditor.exe Token: SeDebugPrivilege 3576 PageEditor.exe Token: SeSystemEnvironmentPrivilege 3576 PageEditor.exe Token: SeRemoteShutdownPrivilege 3576 PageEditor.exe Token: SeUndockPrivilege 3576 PageEditor.exe Token: SeManageVolumePrivilege 3576 PageEditor.exe Token: 33 3576 PageEditor.exe Token: 34 3576 PageEditor.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 876 C11Setup.exe -
Suspicious use of WriteProcessMemory 42 IoCs
description pid Process procid_target PID 1468 wrote to memory of 3208 1468 cmd.exe 79 PID 1468 wrote to memory of 3208 1468 cmd.exe 79 PID 1468 wrote to memory of 1956 1468 cmd.exe 82 PID 1468 wrote to memory of 1956 1468 cmd.exe 82 PID 1468 wrote to memory of 1436 1468 cmd.exe 83 PID 1468 wrote to memory of 1436 1468 cmd.exe 83 PID 1468 wrote to memory of 3348 1468 cmd.exe 84 PID 1468 wrote to memory of 3348 1468 cmd.exe 84 PID 1468 wrote to memory of 4020 1468 cmd.exe 85 PID 1468 wrote to memory of 4020 1468 cmd.exe 85 PID 1468 wrote to memory of 876 1468 cmd.exe 86 PID 1468 wrote to memory of 876 1468 cmd.exe 86 PID 1468 wrote to memory of 2620 1468 cmd.exe 87 PID 1468 wrote to memory of 2620 1468 cmd.exe 87 PID 1468 wrote to memory of 3576 1468 cmd.exe 88 PID 1468 wrote to memory of 3576 1468 cmd.exe 88 PID 2620 wrote to memory of 4100 2620 GuiLoader.exe 89 PID 2620 wrote to memory of 4100 2620 GuiLoader.exe 89 PID 2620 wrote to memory of 1552 2620 GuiLoader.exe 95 PID 2620 wrote to memory of 1552 2620 GuiLoader.exe 95 PID 2620 wrote to memory of 3892 2620 GuiLoader.exe 97 PID 2620 wrote to memory of 3892 2620 GuiLoader.exe 97 PID 2620 wrote to memory of 3440 2620 GuiLoader.exe 99 PID 2620 wrote to memory of 3440 2620 GuiLoader.exe 99 PID 2620 wrote to memory of 3600 2620 GuiLoader.exe 101 PID 2620 wrote to memory of 3600 2620 GuiLoader.exe 101 PID 2620 wrote to memory of 2852 2620 GuiLoader.exe 103 PID 2620 wrote to memory of 2852 2620 GuiLoader.exe 103 PID 2620 wrote to memory of 768 2620 GuiLoader.exe 105 PID 2620 wrote to memory of 768 2620 GuiLoader.exe 105 PID 2620 wrote to memory of 2972 2620 GuiLoader.exe 107 PID 2620 wrote to memory of 2972 2620 GuiLoader.exe 107 PID 2620 wrote to memory of 4436 2620 GuiLoader.exe 109 PID 2620 wrote to memory of 4436 2620 GuiLoader.exe 109 PID 2620 wrote to memory of 992 2620 GuiLoader.exe 111 PID 2620 wrote to memory of 992 2620 GuiLoader.exe 111 PID 2620 wrote to memory of 2944 2620 GuiLoader.exe 113 PID 2620 wrote to memory of 2944 2620 GuiLoader.exe 113 PID 2620 wrote to memory of 2288 2620 GuiLoader.exe 115 PID 2620 wrote to memory of 2288 2620 GuiLoader.exe 115 PID 2288 wrote to memory of 3040 2288 cmd.exe 117 PID 2288 wrote to memory of 3040 2288 cmd.exe 117 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 1552 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:1468 -
C:\Windows\system32\timeout.exetimeout /t 52⤵
- Delays execution with timeout.exe
PID:3208
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C:\Windows\system32\timeout.exetimeout /t 12⤵
- Delays execution with timeout.exe
PID:1956
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C:\Windows\system32\timeout.exetimeout /t 32⤵
- Delays execution with timeout.exe
PID:1436
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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:3348
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C:\Windows\system32\timeout.exetimeout /t 42⤵
- Delays execution with timeout.exe
PID:4020
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C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\C11Setup.exeC11Setup.exe2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:876
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C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\GuiLoader.exeGuiLoader.exe2⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2620 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid3⤵
- Suspicious use of AdjustPrivilegeToken
PID:4100
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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:1552
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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 behavior: EnumeratesProcesses
PID:3892
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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 behavior: EnumeratesProcesses
PID:3440
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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 behavior: EnumeratesProcesses
PID:3600
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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 behavior: EnumeratesProcesses
PID:2852
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption3⤵PID:768
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory3⤵PID:2972
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid3⤵PID:4436
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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⤵
- Suspicious behavior: EnumeratesProcesses
PID:992
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C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name3⤵
- Detects videocard installed
PID:2944
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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:2288 -
C:\Windows\system32\PING.EXEping localhost4⤵
- Runs ping.exe
PID:3040
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C:\Users\Admin\AppData\Local\Temp\C11Bootstrapper\Properties\PageEditor.exePageEditor.exe2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3576
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2KB
MD5627073ee3ca9676911bee35548eff2b8
SHA14c4b68c65e2cab9864b51167d710aa29ebdcff2e
SHA25685b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c
SHA5123c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb
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Filesize
1KB
MD56954f218ba4c7d0fe9cbf31e88fe3a69
SHA1f6f26b65a7892fdcd1372dedbbb1a7fdd2b1db88
SHA256b33cf6e9bb2ceccfb71165bcb40fa340fde43da503d3a4443d03aeddf28832e4
SHA512e7f2aec7ef1cb35c37c8fd0d3d012a66c8aaaefc92c7975fb5597760730c9909dac76961aea6b19844863e90f992b9936efd6cf519fbc971668a86f34c1d0744
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Filesize
944B
MD5e3840d9bcedfe7017e49ee5d05bd1c46
SHA1272620fb2605bd196df471d62db4b2d280a363c6
SHA2563ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f
SHA51276adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376
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Filesize
948B
MD54f5f260adddac5f80eb2d1c0784a2e24
SHA18719894ff1664202f9e228c55f94d62dcaf12cce
SHA2567b41d9c769cb20c7ad73e7afa44f964fd7fe66be45d2b0a2ef438dc985433202
SHA512aa4a23298fda2e7bd6168bcb25b4a215616bccf73705e3566b6b576bf33bb9336682ace3354643332c940c5ee02eef59682a77447ba2f94e97ae0b4722ef0ba7
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Filesize
1KB
MD57332074ae2b01262736b6fbd9e100dac
SHA122f992165065107cc9417fa4117240d84414a13c
SHA256baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa
SHA5124ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
8B
MD5cf759e4c5f14fe3eec41b87ed756cea8
SHA1c27c796bb3c2fac929359563676f4ba1ffada1f5
SHA256c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
SHA512c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b