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Analysis
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max time kernel
30s -
max time network
17s -
platform
windows10-ltsc 2021_x64 -
resource
win10ltsc2021-20250113-en -
resource tags
arch:x64arch:x86image:win10ltsc2021-20250113-enlocale:en-usos:windows10-ltsc 2021-x64system -
submitted
28/01/2025, 02:55
General
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Target
Umbral.exe
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Size
230KB
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MD5
38b42800e087dcee9961a8e80318d6f2
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SHA1
36893cfd322a6021d8048ca6971fc094de6a9f7c
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SHA256
44a1693b64e6cb0054ab2d7188af6c9f213ba2a65cf278b6f3857ab462cf30a2
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SHA512
5c1d1065e8d076abeabe473f184e7561a2bc9b8b1486b3bff7540e736aa700a93a4879f97f70e176044089ca6eb0462725f26cdd3cb78190de62a62252cb6039
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SSDEEP
6144:uloZM+rIkd8g+EtXHkv/iD4K8Nqbw2xpapPyAxVkK6b8e1myui:4oZtL+EP83Nqbw2xpapPyAxVkdXD
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral1/memory/1156-1-0x000001E665170000-0x000001E6651B0000-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 3612 powershell.exe 3988 powershell.exe 3148 powershell.exe 1836 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 32 discord.com 34 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 12 ip-api.com -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 4616 cmd.exe 756 PING.EXE -
Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000 taskmgr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A taskmgr.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName taskmgr.exe -
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 3408 wmic.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 756 PING.EXE -
Suspicious behavior: EnumeratesProcesses 59 IoCs
pid Process 1816 wmic.exe 1816 wmic.exe 1816 wmic.exe 1816 wmic.exe 1156 Umbral.exe 3612 powershell.exe 3612 powershell.exe 3988 powershell.exe 3988 powershell.exe 3148 powershell.exe 3148 powershell.exe 64 powershell.exe 64 powershell.exe 3744 wmic.exe 3744 wmic.exe 3744 wmic.exe 3744 wmic.exe 2592 wmic.exe 2592 wmic.exe 2592 wmic.exe 2592 wmic.exe 2808 taskmgr.exe 2808 taskmgr.exe 4696 wmic.exe 4696 wmic.exe 4696 wmic.exe 4696 wmic.exe 1836 powershell.exe 1836 powershell.exe 3408 wmic.exe 3408 wmic.exe 3408 wmic.exe 3408 wmic.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 1156 Umbral.exe Token: SeIncreaseQuotaPrivilege 1816 wmic.exe Token: SeSecurityPrivilege 1816 wmic.exe Token: SeTakeOwnershipPrivilege 1816 wmic.exe Token: SeLoadDriverPrivilege 1816 wmic.exe Token: SeSystemProfilePrivilege 1816 wmic.exe Token: SeSystemtimePrivilege 1816 wmic.exe Token: SeProfSingleProcessPrivilege 1816 wmic.exe Token: SeIncBasePriorityPrivilege 1816 wmic.exe Token: SeCreatePagefilePrivilege 1816 wmic.exe Token: SeBackupPrivilege 1816 wmic.exe Token: SeRestorePrivilege 1816 wmic.exe Token: SeShutdownPrivilege 1816 wmic.exe Token: SeDebugPrivilege 1816 wmic.exe Token: SeSystemEnvironmentPrivilege 1816 wmic.exe Token: SeRemoteShutdownPrivilege 1816 wmic.exe Token: SeUndockPrivilege 1816 wmic.exe Token: SeManageVolumePrivilege 1816 wmic.exe Token: 33 1816 wmic.exe Token: 34 1816 wmic.exe Token: 35 1816 wmic.exe Token: 36 1816 wmic.exe Token: SeIncreaseQuotaPrivilege 1816 wmic.exe Token: SeSecurityPrivilege 1816 wmic.exe Token: SeTakeOwnershipPrivilege 1816 wmic.exe Token: SeLoadDriverPrivilege 1816 wmic.exe Token: SeSystemProfilePrivilege 1816 wmic.exe Token: SeSystemtimePrivilege 1816 wmic.exe Token: SeProfSingleProcessPrivilege 1816 wmic.exe Token: SeIncBasePriorityPrivilege 1816 wmic.exe Token: SeCreatePagefilePrivilege 1816 wmic.exe Token: SeBackupPrivilege 1816 wmic.exe Token: SeRestorePrivilege 1816 wmic.exe Token: SeShutdownPrivilege 1816 wmic.exe Token: SeDebugPrivilege 1816 wmic.exe Token: SeSystemEnvironmentPrivilege 1816 wmic.exe Token: SeRemoteShutdownPrivilege 1816 wmic.exe Token: SeUndockPrivilege 1816 wmic.exe Token: SeManageVolumePrivilege 1816 wmic.exe Token: 33 1816 wmic.exe Token: 34 1816 wmic.exe Token: 35 1816 wmic.exe Token: 36 1816 wmic.exe Token: SeDebugPrivilege 3612 powershell.exe Token: SeIncreaseQuotaPrivilege 3612 powershell.exe Token: SeSecurityPrivilege 3612 powershell.exe Token: SeTakeOwnershipPrivilege 3612 powershell.exe Token: SeLoadDriverPrivilege 3612 powershell.exe Token: SeSystemProfilePrivilege 3612 powershell.exe Token: SeSystemtimePrivilege 3612 powershell.exe Token: SeProfSingleProcessPrivilege 3612 powershell.exe Token: SeIncBasePriorityPrivilege 3612 powershell.exe Token: SeCreatePagefilePrivilege 3612 powershell.exe Token: SeBackupPrivilege 3612 powershell.exe Token: SeRestorePrivilege 3612 powershell.exe Token: SeShutdownPrivilege 3612 powershell.exe Token: SeDebugPrivilege 3612 powershell.exe Token: SeSystemEnvironmentPrivilege 3612 powershell.exe Token: SeRemoteShutdownPrivilege 3612 powershell.exe Token: SeUndockPrivilege 3612 powershell.exe Token: SeManageVolumePrivilege 3612 powershell.exe Token: 33 3612 powershell.exe Token: 34 3612 powershell.exe Token: 35 3612 powershell.exe -
Suspicious use of FindShellTrayWindow 38 IoCs
pid Process 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe -
Suspicious use of SendNotifyMessage 38 IoCs
pid Process 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe 2808 taskmgr.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 1156 wrote to memory of 1816 1156 Umbral.exe 82 PID 1156 wrote to memory of 1816 1156 Umbral.exe 82 PID 1156 wrote to memory of 4960 1156 Umbral.exe 85 PID 1156 wrote to memory of 4960 1156 Umbral.exe 85 PID 1156 wrote to memory of 3612 1156 Umbral.exe 87 PID 1156 wrote to memory of 3612 1156 Umbral.exe 87 PID 1156 wrote to memory of 3988 1156 Umbral.exe 90 PID 1156 wrote to memory of 3988 1156 Umbral.exe 90 PID 1156 wrote to memory of 3148 1156 Umbral.exe 92 PID 1156 wrote to memory of 3148 1156 Umbral.exe 92 PID 1156 wrote to memory of 64 1156 Umbral.exe 94 PID 1156 wrote to memory of 64 1156 Umbral.exe 94 PID 1156 wrote to memory of 3744 1156 Umbral.exe 98 PID 1156 wrote to memory of 3744 1156 Umbral.exe 98 PID 1156 wrote to memory of 2592 1156 Umbral.exe 101 PID 1156 wrote to memory of 2592 1156 Umbral.exe 101 PID 1156 wrote to memory of 4696 1156 Umbral.exe 104 PID 1156 wrote to memory of 4696 1156 Umbral.exe 104 PID 1156 wrote to memory of 1836 1156 Umbral.exe 107 PID 1156 wrote to memory of 1836 1156 Umbral.exe 107 PID 1156 wrote to memory of 3408 1156 Umbral.exe 109 PID 1156 wrote to memory of 3408 1156 Umbral.exe 109 PID 1156 wrote to memory of 4616 1156 Umbral.exe 111 PID 1156 wrote to memory of 4616 1156 Umbral.exe 111 PID 4616 wrote to memory of 756 4616 cmd.exe 113 PID 4616 wrote to memory of 756 4616 cmd.exe 113 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 4960 attrib.exe
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:1156 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1816
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C:\Windows\SYSTEM32\attrib.exe"attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"2⤵
- Views/modifies file attributes
PID:4960
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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:3612
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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
PID:3988
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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
PID:3148
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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
PID:64
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption2⤵
- Suspicious behavior: EnumeratesProcesses
PID:3744
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory2⤵
- Suspicious behavior: EnumeratesProcesses
PID:2592
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious behavior: EnumeratesProcesses
PID:4696
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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:1836
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C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name2⤵
- Detects videocard installed
- Suspicious behavior: EnumeratesProcesses
PID:3408
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C:\Windows\SYSTEM32\cmd.exe"cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Umbral.exe" && pause2⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:4616 -
C:\Windows\system32\PING.EXEping localhost3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:756
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2808
Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
3KB
MD53eb3833f769dd890afc295b977eab4b4
SHA1e857649b037939602c72ad003e5d3698695f436f
SHA256c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485
SHA512c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72
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Filesize
1KB
MD560b3262c3163ee3d466199160b9ed07d
SHA1994ece4ea4e61de0be2fdd580f87e3415f9e1ff6
SHA256e3b30f16d41f94cba2b8a75f35c91ae7418465abfbfe5477ec0551d1952b2fdb
SHA512081d2015cb94477eb0fbc38f44b6d9b4a3204fb3ad0b7d0e146a88ab4ab9a0d475207f1adae03f4a81ccc5beb7568dc8be1249f69e32fe56efd9ee2f6ee3b1af
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Filesize
948B
MD5f8e5f7624846b8c5a971591692717cf4
SHA17505e50af2662ed414e89cec741408f905fa1725
SHA256db7bede3d8817b35e77b01069a0995c55c7f538cb299281eb3d8afe5f5b47611
SHA512bf91013c305fb8281806a9e530c764e0915850675453323b92f217c35fe4b30daf835a14f0db9106669637db59b649ae64fee2bd07dbe3f93ee54cf42ae2cab4
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Filesize
1KB
MD5494de073067224860ddfa87f20c1fcd5
SHA1139fe0d6cc741fdbb891b5e0df6e236fcdfdd7de
SHA2565b67e54cbb8566db2c781ed86c2e026bef8e1c6e5b454c42872ffba7782a9579
SHA5122457bb775ad7ce2b62b35f5cddfab1c1e1b16dcba83e38e7b5fb2e205048ffc5d220a29a9b0cfe218800d46fc3888480a0822877cf392aeadcf9287b784a390a
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Filesize
1KB
MD523177316e5ab500ee9f5e650f688b47e
SHA1d5ba3def42a52e8caa9f92ca7b18d4b08150257f
SHA256af6d0dd4d2a2721405f6b8fcc6acb9fcc99db3311ca4fe6c413348376ea35554
SHA512074f1307c7251546abee94b5645af4a5a51e39eeb4acf47bfdeba89bfe7ba7967bd9fdb4ea611197344f06551409bdcca68d3b58713a93b9c93a181b1b420de6
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82