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Analysis
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max time kernel
94s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
19/01/2025, 12:54
Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240903-en
General
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Target
Umbral.exe
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Size
229KB
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MD5
4bc2e7ac1436d46b28811c13b73b7700
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SHA1
113e650f1c5d41a20bdcf33152d2b90ba23b04e9
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SHA256
3a61a0cf3cc36d28922d8215d7ec5414685e195e694bac030bca29a32d9683a0
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SHA512
114eb0f25fd0d1f9378645007f327dd7d9aa99065e3982b473a89bd08fb529c3d6d0092c79dc1f6fa12ed99e2f12a7820b6e3c9254f5d838df29131bb7b2001f
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SSDEEP
6144:tloZM+rIkd8g+EtXHkv/iD4/E0fAmB5Kz/Cwhl0Adb8e1mc3li:voZtL+EP8/E0fAmB5Kz/Cwhl007c
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral2/memory/3004-1-0x00000242D5290000-0x00000242D52D0000-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 2116 powershell.exe 3260 powershell.exe 4084 powershell.exe 4948 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 21 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 6 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 4052 cmd.exe 4672 PING.EXE -
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 3488 wmic.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 4672 PING.EXE -
Suspicious behavior: EnumeratesProcesses 11 IoCs
pid Process 3004 Umbral.exe 2116 powershell.exe 2116 powershell.exe 3260 powershell.exe 3260 powershell.exe 4084 powershell.exe 4084 powershell.exe 3668 powershell.exe 3668 powershell.exe 4948 powershell.exe 4948 powershell.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 3004 Umbral.exe Token: SeIncreaseQuotaPrivilege 1968 wmic.exe Token: SeSecurityPrivilege 1968 wmic.exe Token: SeTakeOwnershipPrivilege 1968 wmic.exe Token: SeLoadDriverPrivilege 1968 wmic.exe Token: SeSystemProfilePrivilege 1968 wmic.exe Token: SeSystemtimePrivilege 1968 wmic.exe Token: SeProfSingleProcessPrivilege 1968 wmic.exe Token: SeIncBasePriorityPrivilege 1968 wmic.exe Token: SeCreatePagefilePrivilege 1968 wmic.exe Token: SeBackupPrivilege 1968 wmic.exe Token: SeRestorePrivilege 1968 wmic.exe Token: SeShutdownPrivilege 1968 wmic.exe Token: SeDebugPrivilege 1968 wmic.exe Token: SeSystemEnvironmentPrivilege 1968 wmic.exe Token: SeRemoteShutdownPrivilege 1968 wmic.exe Token: SeUndockPrivilege 1968 wmic.exe Token: SeManageVolumePrivilege 1968 wmic.exe Token: 33 1968 wmic.exe Token: 34 1968 wmic.exe Token: 35 1968 wmic.exe Token: 36 1968 wmic.exe Token: SeIncreaseQuotaPrivilege 1968 wmic.exe Token: SeSecurityPrivilege 1968 wmic.exe Token: SeTakeOwnershipPrivilege 1968 wmic.exe Token: SeLoadDriverPrivilege 1968 wmic.exe Token: SeSystemProfilePrivilege 1968 wmic.exe Token: SeSystemtimePrivilege 1968 wmic.exe Token: SeProfSingleProcessPrivilege 1968 wmic.exe Token: SeIncBasePriorityPrivilege 1968 wmic.exe Token: SeCreatePagefilePrivilege 1968 wmic.exe Token: SeBackupPrivilege 1968 wmic.exe Token: SeRestorePrivilege 1968 wmic.exe Token: SeShutdownPrivilege 1968 wmic.exe Token: SeDebugPrivilege 1968 wmic.exe Token: SeSystemEnvironmentPrivilege 1968 wmic.exe Token: SeRemoteShutdownPrivilege 1968 wmic.exe Token: SeUndockPrivilege 1968 wmic.exe Token: SeManageVolumePrivilege 1968 wmic.exe Token: 33 1968 wmic.exe Token: 34 1968 wmic.exe Token: 35 1968 wmic.exe Token: 36 1968 wmic.exe Token: SeDebugPrivilege 2116 powershell.exe Token: SeDebugPrivilege 3260 powershell.exe Token: SeDebugPrivilege 4084 powershell.exe Token: SeDebugPrivilege 3668 powershell.exe Token: SeIncreaseQuotaPrivilege 4572 wmic.exe Token: SeSecurityPrivilege 4572 wmic.exe Token: SeTakeOwnershipPrivilege 4572 wmic.exe Token: SeLoadDriverPrivilege 4572 wmic.exe Token: SeSystemProfilePrivilege 4572 wmic.exe Token: SeSystemtimePrivilege 4572 wmic.exe Token: SeProfSingleProcessPrivilege 4572 wmic.exe Token: SeIncBasePriorityPrivilege 4572 wmic.exe Token: SeCreatePagefilePrivilege 4572 wmic.exe Token: SeBackupPrivilege 4572 wmic.exe Token: SeRestorePrivilege 4572 wmic.exe Token: SeShutdownPrivilege 4572 wmic.exe Token: SeDebugPrivilege 4572 wmic.exe Token: SeSystemEnvironmentPrivilege 4572 wmic.exe Token: SeRemoteShutdownPrivilege 4572 wmic.exe Token: SeUndockPrivilege 4572 wmic.exe Token: SeManageVolumePrivilege 4572 wmic.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 3004 wrote to memory of 1968 3004 Umbral.exe 83 PID 3004 wrote to memory of 1968 3004 Umbral.exe 83 PID 3004 wrote to memory of 848 3004 Umbral.exe 86 PID 3004 wrote to memory of 848 3004 Umbral.exe 86 PID 3004 wrote to memory of 2116 3004 Umbral.exe 88 PID 3004 wrote to memory of 2116 3004 Umbral.exe 88 PID 3004 wrote to memory of 3260 3004 Umbral.exe 90 PID 3004 wrote to memory of 3260 3004 Umbral.exe 90 PID 3004 wrote to memory of 4084 3004 Umbral.exe 92 PID 3004 wrote to memory of 4084 3004 Umbral.exe 92 PID 3004 wrote to memory of 3668 3004 Umbral.exe 94 PID 3004 wrote to memory of 3668 3004 Umbral.exe 94 PID 3004 wrote to memory of 4572 3004 Umbral.exe 97 PID 3004 wrote to memory of 4572 3004 Umbral.exe 97 PID 3004 wrote to memory of 3328 3004 Umbral.exe 99 PID 3004 wrote to memory of 3328 3004 Umbral.exe 99 PID 3004 wrote to memory of 2856 3004 Umbral.exe 101 PID 3004 wrote to memory of 2856 3004 Umbral.exe 101 PID 3004 wrote to memory of 4948 3004 Umbral.exe 103 PID 3004 wrote to memory of 4948 3004 Umbral.exe 103 PID 3004 wrote to memory of 3488 3004 Umbral.exe 105 PID 3004 wrote to memory of 3488 3004 Umbral.exe 105 PID 3004 wrote to memory of 4052 3004 Umbral.exe 107 PID 3004 wrote to memory of 4052 3004 Umbral.exe 107 PID 4052 wrote to memory of 4672 4052 cmd.exe 109 PID 4052 wrote to memory of 4672 4052 cmd.exe 109 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 848 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:3004 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1968
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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:848
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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:2116
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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:3260
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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:4084
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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:3668
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4572
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory2⤵PID:3328
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵PID:2856
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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:4948
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C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name2⤵
- Detects videocard installed
PID:3488
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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:4052 -
C:\Windows\system32\PING.EXEping localhost3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:4672
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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
MD58bbd6908e148d61010a3130cb6aae4a0
SHA1e74bcc1b0f762fcd7469d0621b9c7fe50b0c365d
SHA25679c8ed7085737723dbc7c40b32d01ea400171787259b7458561cd5db60401023
SHA51238057edb5f2ce86329f558bf34224c6110443635756b1b26da99f89b13e3f971bf602939f40d3fce8459cfdab4ad4fa4928ecb933ff045173535fcc46fe4855f
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Filesize
1KB
MD5276798eeb29a49dc6e199768bc9c2e71
SHA15fdc8ccb897ac2df7476fbb07517aca5b7a6205b
SHA256cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc
SHA5120d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2
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Filesize
1KB
MD52984662ba3f86d7fcf26758b5b76754d
SHA1bc2a43ffd898222ee84406313f3834f226928379
SHA256f0815f797b0c1829745dd65985f28d459688f91ceb2f3d76fed2d4309589bcde
SHA512a06251a7a14559ebf5627a3c6b03fda9ded1d4ee44991283c824ccf5011cdf67665696d2d9b23507cbb3e3b9943b9e9f79ef28d3657eb61fb99920225417ab11
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82