umbral | 83fa6a1e67c9ecd7ec68e905c4474274340b96b718da2dbab29cc7fcc4c3e414

Analysis

max time kernel
441s
max time network
442s
platform
windows11-21h2_x64
resource
win11-20250410-en
resource tags

arch:x64arch:x86image:win11-20250410-enlocale:en-usos:windows11-21h2-x64system
submitted
11/04/2025, 10:06

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General

Target

Umbral.exe
Size

229KB
MD5

dcd9253fa3b14afa8d8e636315517897
SHA1

37fcf6a0b4b67e99ad6b4e2c51f0fab9f0874052
SHA256

83fa6a1e67c9ecd7ec68e905c4474274340b96b718da2dbab29cc7fcc4c3e414
SHA512

6cdc1cb0795a2ce33c377141b643b969da1ac7b9708a348115cfe89522f605c99b2f8c3f5cbe08059af0fae1e1a44e9cf05728de7fc50aeb8a78d813e7d80758
SSDEEP

6144:FloZMNrIkd8g+EtXHkv/iD42ZdOecfVeGJeMFXSy3sLb8e1mPwi:HoZmL+EP8EdOecfVeGJeMFXSy3+i

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral4/memory/1352-1-0x00000122D9740000-0x00000122D9780000-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
4200	powershell.exe
4996	powershell.exe
3912	powershell.exe
4344	powershell.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
1	discord.com
5	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
1	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
5816	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4200	powershell.exe
4200	powershell.exe
4996	powershell.exe
4996	powershell.exe
3912	powershell.exe
3912	powershell.exe
1680	powershell.exe
1680	powershell.exe
4344	powershell.exe
4344	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1352	Umbral.exe
Token: SeDebugPrivilege	4200	powershell.exe
Token: SeDebugPrivilege	4996	powershell.exe
Token: SeDebugPrivilege	3912	powershell.exe
Token: SeDebugPrivilege	1680	powershell.exe
Token: SeIncreaseQuotaPrivilege	5472	wmic.exe
Token: SeSecurityPrivilege	5472	wmic.exe
Token: SeTakeOwnershipPrivilege	5472	wmic.exe
Token: SeLoadDriverPrivilege	5472	wmic.exe
Token: SeSystemProfilePrivilege	5472	wmic.exe
Token: SeSystemtimePrivilege	5472	wmic.exe
Token: SeProfSingleProcessPrivilege	5472	wmic.exe
Token: SeIncBasePriorityPrivilege	5472	wmic.exe
Token: SeCreatePagefilePrivilege	5472	wmic.exe
Token: SeBackupPrivilege	5472	wmic.exe
Token: SeRestorePrivilege	5472	wmic.exe
Token: SeShutdownPrivilege	5472	wmic.exe
Token: SeDebugPrivilege	5472	wmic.exe
Token: SeSystemEnvironmentPrivilege	5472	wmic.exe
Token: SeRemoteShutdownPrivilege	5472	wmic.exe
Token: SeUndockPrivilege	5472	wmic.exe
Token: SeManageVolumePrivilege	5472	wmic.exe
Token: 33	5472	wmic.exe
Token: 34	5472	wmic.exe
Token: 35	5472	wmic.exe
Token: 36	5472	wmic.exe
Token: SeIncreaseQuotaPrivilege	5472	wmic.exe
Token: SeSecurityPrivilege	5472	wmic.exe
Token: SeTakeOwnershipPrivilege	5472	wmic.exe
Token: SeLoadDriverPrivilege	5472	wmic.exe
Token: SeSystemProfilePrivilege	5472	wmic.exe
Token: SeSystemtimePrivilege	5472	wmic.exe
Token: SeProfSingleProcessPrivilege	5472	wmic.exe
Token: SeIncBasePriorityPrivilege	5472	wmic.exe
Token: SeCreatePagefilePrivilege	5472	wmic.exe
Token: SeBackupPrivilege	5472	wmic.exe
Token: SeRestorePrivilege	5472	wmic.exe
Token: SeShutdownPrivilege	5472	wmic.exe
Token: SeDebugPrivilege	5472	wmic.exe
Token: SeSystemEnvironmentPrivilege	5472	wmic.exe
Token: SeRemoteShutdownPrivilege	5472	wmic.exe
Token: SeUndockPrivilege	5472	wmic.exe
Token: SeManageVolumePrivilege	5472	wmic.exe
Token: 33	5472	wmic.exe
Token: 34	5472	wmic.exe
Token: 35	5472	wmic.exe
Token: 36	5472	wmic.exe
Token: SeIncreaseQuotaPrivilege	3124	wmic.exe
Token: SeSecurityPrivilege	3124	wmic.exe
Token: SeTakeOwnershipPrivilege	3124	wmic.exe
Token: SeLoadDriverPrivilege	3124	wmic.exe
Token: SeSystemProfilePrivilege	3124	wmic.exe
Token: SeSystemtimePrivilege	3124	wmic.exe
Token: SeProfSingleProcessPrivilege	3124	wmic.exe
Token: SeIncBasePriorityPrivilege	3124	wmic.exe
Token: SeCreatePagefilePrivilege	3124	wmic.exe
Token: SeBackupPrivilege	3124	wmic.exe
Token: SeRestorePrivilege	3124	wmic.exe
Token: SeShutdownPrivilege	3124	wmic.exe
Token: SeDebugPrivilege	3124	wmic.exe
Token: SeSystemEnvironmentPrivilege	3124	wmic.exe
Token: SeRemoteShutdownPrivilege	3124	wmic.exe
Token: SeUndockPrivilege	3124	wmic.exe
Token: SeManageVolumePrivilege	3124	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 4200	1352	Umbral.exe	79
PID 1352 wrote to memory of 4200	1352	Umbral.exe	79
PID 1352 wrote to memory of 4996	1352	Umbral.exe	81
PID 1352 wrote to memory of 4996	1352	Umbral.exe	81
PID 1352 wrote to memory of 3912	1352	Umbral.exe	83
PID 1352 wrote to memory of 3912	1352	Umbral.exe	83
PID 1352 wrote to memory of 1680	1352	Umbral.exe	85
PID 1352 wrote to memory of 1680	1352	Umbral.exe	85
PID 1352 wrote to memory of 5472	1352	Umbral.exe	87
PID 1352 wrote to memory of 5472	1352	Umbral.exe	87
PID 1352 wrote to memory of 3124	1352	Umbral.exe	90
PID 1352 wrote to memory of 3124	1352	Umbral.exe	90
PID 1352 wrote to memory of 4776	1352	Umbral.exe	92
PID 1352 wrote to memory of 4776	1352	Umbral.exe	92
PID 1352 wrote to memory of 4344	1352	Umbral.exe	94
PID 1352 wrote to memory of 4344	1352	Umbral.exe	94
PID 1352 wrote to memory of 5816	1352	Umbral.exe	96
PID 1352 wrote to memory of 5816	1352	Umbral.exe	96

C:\Users\Admin\AppData\Local\Temp\Umbral.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1352
- 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:4200
- 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:4996
- 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:3912
- 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:1680
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5472
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3124
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:4776
- 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:4344
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:5816

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
948B

MD5
fa21dd50b4e64421076f843031c8ccf7

SHA1
2c56e94f130c0d8d77116e939ffee4e37cf982bd

SHA256
e4f21aca1e12aafa8de7af24b79a75526e902c7d4b3fea5bdb6e723976997be3

SHA512
b8de2bfeb7af06c587dd1f424d410cf83471f31a55a3ea4c4481ce07ffd9bf66ddc1f7775ecd6ac65ac33baaec90ba5a208a9aefc84f31125a50dfb919982687

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

Filesize
1KB

MD5
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

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

Filesize
1KB

MD5
f56e1db93ab465c51dac24ca7c5a0104

SHA1
9d486c7dd9d88bbbbbcb19a9d94442f3afab344e

SHA256
019794e291d53cf3c2d10490a08983689fc5d2f6e2ad70dd85a2546f159505f3

SHA512
fbb60bc143646f815c88c6731953a7c96cf0bc1339bd85e7df2a534ce945e406b42c4d70c7ac537b4775f3c85c8d9ba3e2083dfd09030f5b08a37c34e841668a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zx1f0tzb.u1p.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1352-65-0x00000122DB480000-0x00000122DB48A000-memory.dmp

Filesize
40KB

Download
memory/1352-29-0x00000122F3F60000-0x00000122F3FD6000-memory.dmp

Filesize
472KB

Download
memory/1352-83-0x00007FFBB8070000-0x00007FFBB8B32000-memory.dmp

Filesize
10.8MB

Download
memory/1352-1-0x00000122D9740000-0x00000122D9780000-memory.dmp

Filesize
256KB

Download
memory/1352-66-0x00000122F3FE0000-0x00000122F3FF2000-memory.dmp

Filesize
72KB

Download
memory/1352-0-0x00007FFBB8073000-0x00007FFBB8075000-memory.dmp

Filesize
8KB

Download
memory/1352-2-0x00007FFBB8070000-0x00007FFBB8B32000-memory.dmp

Filesize
10.8MB

Download
memory/1352-31-0x00000122DB430000-0x00000122DB44E000-memory.dmp

Filesize
120KB

Download
memory/1352-30-0x00000122F3EE0000-0x00000122F3F30000-memory.dmp

Filesize
320KB

Download
memory/4200-16-0x00007FFBB8070000-0x00007FFBB8B32000-memory.dmp

Filesize
10.8MB

Download
memory/4200-3-0x00007FFBB8070000-0x00007FFBB8B32000-memory.dmp

Filesize
10.8MB

Download
memory/4200-13-0x00007FFBB8070000-0x00007FFBB8B32000-memory.dmp

Filesize
10.8MB

Download
memory/4200-18-0x00007FFBB8070000-0x00007FFBB8B32000-memory.dmp

Filesize
10.8MB

Download
memory/4200-12-0x0000017533090000-0x00000175330B2000-memory.dmp

Filesize
136KB

Download
memory/4200-15-0x00007FFBB8070000-0x00007FFBB8B32000-memory.dmp

Filesize
10.8MB

Download
memory/4200-14-0x00007FFBB8070000-0x00007FFBB8B32000-memory.dmp

Filesize
10.8MB

Download