Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
26-05-2024 17:59
Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240508-en
windows7-x64
9 signatures
150 seconds
General
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Target
Umbral.exe
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Size
231KB
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MD5
e9e39a33854ca8af45f6048dd49f265b
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SHA1
d19011ba34adf3135335aa9839d24e1b5c5dde71
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SHA256
e5da8ebc635776269ddceed41b6b6c0860071dafbe121b3fa17e63d01effd26c
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SHA512
703fdc9b9d086329a7273138920904fa0bf3d9917c0db74fcba1853bf1ecd42fd3144725238104e98ebac95f31da5d38551b3f97fb6c72ffdd0c60dbdc4d35cf
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SSDEEP
6144:YOSAnvuqXLUirFMWyW1bYcUNSzNc0jqatc2J8e1mvSTU:vDqyFMWyW1bYcUNSzNc0jqIj2T
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral2/memory/4092-1-0x000001E7DF790000-0x000001E7DF7D0000-memory.dmp family_umbral -
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 4204 powershell.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 20 discord.com 22 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 18 ip-api.com -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 taskmgr.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString taskmgr.exe -
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 4504 wmic.exe -
Suspicious behavior: EnumeratesProcesses 16 IoCs
pid Process 4204 powershell.exe 4204 powershell.exe 2260 powershell.exe 2260 powershell.exe 5036 powershell.exe 5036 powershell.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 4092 Umbral.exe Token: SeDebugPrivilege 4204 powershell.exe Token: SeDebugPrivilege 2260 powershell.exe Token: SeIncreaseQuotaPrivilege 32 wmic.exe Token: SeSecurityPrivilege 32 wmic.exe Token: SeTakeOwnershipPrivilege 32 wmic.exe Token: SeLoadDriverPrivilege 32 wmic.exe Token: SeSystemProfilePrivilege 32 wmic.exe Token: SeSystemtimePrivilege 32 wmic.exe Token: SeProfSingleProcessPrivilege 32 wmic.exe Token: SeIncBasePriorityPrivilege 32 wmic.exe Token: SeCreatePagefilePrivilege 32 wmic.exe Token: SeBackupPrivilege 32 wmic.exe Token: SeRestorePrivilege 32 wmic.exe Token: SeShutdownPrivilege 32 wmic.exe Token: SeDebugPrivilege 32 wmic.exe Token: SeSystemEnvironmentPrivilege 32 wmic.exe Token: SeRemoteShutdownPrivilege 32 wmic.exe Token: SeUndockPrivilege 32 wmic.exe Token: SeManageVolumePrivilege 32 wmic.exe Token: 33 32 wmic.exe Token: 34 32 wmic.exe Token: 35 32 wmic.exe Token: 36 32 wmic.exe Token: SeIncreaseQuotaPrivilege 32 wmic.exe Token: SeSecurityPrivilege 32 wmic.exe Token: SeTakeOwnershipPrivilege 32 wmic.exe Token: SeLoadDriverPrivilege 32 wmic.exe Token: SeSystemProfilePrivilege 32 wmic.exe Token: SeSystemtimePrivilege 32 wmic.exe Token: SeProfSingleProcessPrivilege 32 wmic.exe Token: SeIncBasePriorityPrivilege 32 wmic.exe Token: SeCreatePagefilePrivilege 32 wmic.exe Token: SeBackupPrivilege 32 wmic.exe Token: SeRestorePrivilege 32 wmic.exe Token: SeShutdownPrivilege 32 wmic.exe Token: SeDebugPrivilege 32 wmic.exe Token: SeSystemEnvironmentPrivilege 32 wmic.exe Token: SeRemoteShutdownPrivilege 32 wmic.exe Token: SeUndockPrivilege 32 wmic.exe Token: SeManageVolumePrivilege 32 wmic.exe Token: 33 32 wmic.exe Token: 34 32 wmic.exe Token: 35 32 wmic.exe Token: 36 32 wmic.exe Token: SeIncreaseQuotaPrivilege 1904 wmic.exe Token: SeSecurityPrivilege 1904 wmic.exe Token: SeTakeOwnershipPrivilege 1904 wmic.exe Token: SeLoadDriverPrivilege 1904 wmic.exe Token: SeSystemProfilePrivilege 1904 wmic.exe Token: SeSystemtimePrivilege 1904 wmic.exe Token: SeProfSingleProcessPrivilege 1904 wmic.exe Token: SeIncBasePriorityPrivilege 1904 wmic.exe Token: SeCreatePagefilePrivilege 1904 wmic.exe Token: SeBackupPrivilege 1904 wmic.exe Token: SeRestorePrivilege 1904 wmic.exe Token: SeShutdownPrivilege 1904 wmic.exe Token: SeDebugPrivilege 1904 wmic.exe Token: SeSystemEnvironmentPrivilege 1904 wmic.exe Token: SeRemoteShutdownPrivilege 1904 wmic.exe Token: SeUndockPrivilege 1904 wmic.exe Token: SeManageVolumePrivilege 1904 wmic.exe Token: 33 1904 wmic.exe Token: 34 1904 wmic.exe -
Suspicious use of FindShellTrayWindow 36 IoCs
pid Process 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe -
Suspicious use of SendNotifyMessage 36 IoCs
pid Process 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe 1664 taskmgr.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4092 wrote to memory of 4204 4092 Umbral.exe 85 PID 4092 wrote to memory of 4204 4092 Umbral.exe 85 PID 4092 wrote to memory of 2260 4092 Umbral.exe 87 PID 4092 wrote to memory of 2260 4092 Umbral.exe 87 PID 4092 wrote to memory of 32 4092 Umbral.exe 94 PID 4092 wrote to memory of 32 4092 Umbral.exe 94 PID 4092 wrote to memory of 1904 4092 Umbral.exe 97 PID 4092 wrote to memory of 1904 4092 Umbral.exe 97 PID 4092 wrote to memory of 1816 4092 Umbral.exe 99 PID 4092 wrote to memory of 1816 4092 Umbral.exe 99 PID 4092 wrote to memory of 5036 4092 Umbral.exe 101 PID 4092 wrote to memory of 5036 4092 Umbral.exe 101 PID 4092 wrote to memory of 4504 4092 Umbral.exe 104 PID 4092 wrote to memory of 4504 4092 Umbral.exe 104
Processes
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C:\Users\Admin\AppData\Local\Temp\Umbral.exe"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4092 -
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:4204
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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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2260
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption2⤵
- Suspicious use of AdjustPrivilegeToken
PID:32
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1904
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵PID:1816
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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⤵
- Suspicious behavior: EnumeratesProcesses
PID:5036
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C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name2⤵
- Detects videocard installed
PID:4504
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1664
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
MD5df6c4e5c3091c14551e6c92f07717617
SHA11ea87111035496c1b2b74cef8b5c62d00ac072c9
SHA256b79dc75372707ff84a643a9e4cff6fad2d1a936b54d458088850c62c96e2f231
SHA512ab861efd0ff28a4bae3513a884d5b00c1b68d8f0bd54a00428bbb65a6954f8778e8f5300362025265251cb425c5ed77608b10776f382c3b392916ae46e38db35
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82