umbral | 6be3e35737657d88cea9f770fbc4d0129ac97130ed394f051947abfbe65934cf

Analysis

max time kernel
102s
max time network
133s
platform
windows11-21h2_x64
resource
win11-20250410-en
resource tags

arch:x64arch:x86image:win11-20250410-enlocale:en-usos:windows11-21h2-x64system
submitted
14/04/2025, 03:42

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General

Target

Umbral.exe
Size

229KB
MD5

577b6f4a24d7da6c31b25061ba2ca003
SHA1

d225ba9696ca5654adaaca34df547cd79277f492
SHA256

6be3e35737657d88cea9f770fbc4d0129ac97130ed394f051947abfbe65934cf
SHA512

d84e775ff672a282fa06efb23a7739a0075cae45337bc7682da6b47e44abf7a6e8a685787f684b28010d35f47bd14b2f461f328926e3b02eb84586af92dbdeca
SSDEEP

6144:lloZM0rIkd8g+EtXHkv/iD4Z1HmVjgULtyD1Ac5bs+b8e1mvFi:noZDL+EP8Z1HmVjgULtyD1Ac5b+M

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3388-1-0x0000017E24980000-0x0000017E249C0000-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
5096	powershell.exe
5668	powershell.exe
4560	powershell.exe
6032	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
4	discord.com
17	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
4740	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3388	Umbral.exe
5096	powershell.exe
5096	powershell.exe
4560	powershell.exe
4560	powershell.exe
6032	powershell.exe
6032	powershell.exe
1184	powershell.exe
1184	powershell.exe
5668	powershell.exe
5668	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3388	Umbral.exe
Token: SeIncreaseQuotaPrivilege	3652	wmic.exe
Token: SeSecurityPrivilege	3652	wmic.exe
Token: SeTakeOwnershipPrivilege	3652	wmic.exe
Token: SeLoadDriverPrivilege	3652	wmic.exe
Token: SeSystemProfilePrivilege	3652	wmic.exe
Token: SeSystemtimePrivilege	3652	wmic.exe
Token: SeProfSingleProcessPrivilege	3652	wmic.exe
Token: SeIncBasePriorityPrivilege	3652	wmic.exe
Token: SeCreatePagefilePrivilege	3652	wmic.exe
Token: SeBackupPrivilege	3652	wmic.exe
Token: SeRestorePrivilege	3652	wmic.exe
Token: SeShutdownPrivilege	3652	wmic.exe
Token: SeDebugPrivilege	3652	wmic.exe
Token: SeSystemEnvironmentPrivilege	3652	wmic.exe
Token: SeRemoteShutdownPrivilege	3652	wmic.exe
Token: SeUndockPrivilege	3652	wmic.exe
Token: SeManageVolumePrivilege	3652	wmic.exe
Token: 33	3652	wmic.exe
Token: 34	3652	wmic.exe
Token: 35	3652	wmic.exe
Token: 36	3652	wmic.exe
Token: SeIncreaseQuotaPrivilege	3652	wmic.exe
Token: SeSecurityPrivilege	3652	wmic.exe
Token: SeTakeOwnershipPrivilege	3652	wmic.exe
Token: SeLoadDriverPrivilege	3652	wmic.exe
Token: SeSystemProfilePrivilege	3652	wmic.exe
Token: SeSystemtimePrivilege	3652	wmic.exe
Token: SeProfSingleProcessPrivilege	3652	wmic.exe
Token: SeIncBasePriorityPrivilege	3652	wmic.exe
Token: SeCreatePagefilePrivilege	3652	wmic.exe
Token: SeBackupPrivilege	3652	wmic.exe
Token: SeRestorePrivilege	3652	wmic.exe
Token: SeShutdownPrivilege	3652	wmic.exe
Token: SeDebugPrivilege	3652	wmic.exe
Token: SeSystemEnvironmentPrivilege	3652	wmic.exe
Token: SeRemoteShutdownPrivilege	3652	wmic.exe
Token: SeUndockPrivilege	3652	wmic.exe
Token: SeManageVolumePrivilege	3652	wmic.exe
Token: 33	3652	wmic.exe
Token: 34	3652	wmic.exe
Token: 35	3652	wmic.exe
Token: 36	3652	wmic.exe
Token: SeDebugPrivilege	5096	powershell.exe
Token: SeDebugPrivilege	4560	powershell.exe
Token: SeDebugPrivilege	6032	powershell.exe
Token: SeDebugPrivilege	1184	powershell.exe
Token: SeIncreaseQuotaPrivilege	2704	wmic.exe
Token: SeSecurityPrivilege	2704	wmic.exe
Token: SeTakeOwnershipPrivilege	2704	wmic.exe
Token: SeLoadDriverPrivilege	2704	wmic.exe
Token: SeSystemProfilePrivilege	2704	wmic.exe
Token: SeSystemtimePrivilege	2704	wmic.exe
Token: SeProfSingleProcessPrivilege	2704	wmic.exe
Token: SeIncBasePriorityPrivilege	2704	wmic.exe
Token: SeCreatePagefilePrivilege	2704	wmic.exe
Token: SeBackupPrivilege	2704	wmic.exe
Token: SeRestorePrivilege	2704	wmic.exe
Token: SeShutdownPrivilege	2704	wmic.exe
Token: SeDebugPrivilege	2704	wmic.exe
Token: SeSystemEnvironmentPrivilege	2704	wmic.exe
Token: SeRemoteShutdownPrivilege	2704	wmic.exe
Token: SeUndockPrivilege	2704	wmic.exe
Token: SeManageVolumePrivilege	2704	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3388 wrote to memory of 3652	3388	Umbral.exe	82
PID 3388 wrote to memory of 3652	3388	Umbral.exe	82
PID 3388 wrote to memory of 5096	3388	Umbral.exe	86
PID 3388 wrote to memory of 5096	3388	Umbral.exe	86
PID 3388 wrote to memory of 4560	3388	Umbral.exe	88
PID 3388 wrote to memory of 4560	3388	Umbral.exe	88
PID 3388 wrote to memory of 6032	3388	Umbral.exe	90
PID 3388 wrote to memory of 6032	3388	Umbral.exe	90
PID 3388 wrote to memory of 1184	3388	Umbral.exe	92
PID 3388 wrote to memory of 1184	3388	Umbral.exe	92
PID 3388 wrote to memory of 2704	3388	Umbral.exe	96
PID 3388 wrote to memory of 2704	3388	Umbral.exe	96
PID 3388 wrote to memory of 5144	3388	Umbral.exe	98
PID 3388 wrote to memory of 5144	3388	Umbral.exe	98
PID 3388 wrote to memory of 5416	3388	Umbral.exe	100
PID 3388 wrote to memory of 5416	3388	Umbral.exe	100
PID 3388 wrote to memory of 5668	3388	Umbral.exe	102
PID 3388 wrote to memory of 5668	3388	Umbral.exe	102
PID 3388 wrote to memory of 4740	3388	Umbral.exe	104
PID 3388 wrote to memory of 4740	3388	Umbral.exe	104

C:\Users\Admin\AppData\Local\Temp\Umbral.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3388
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3652
- 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:5096
- 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:4560
- 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:6032
- 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:1184
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2704
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:5144
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:5416
- 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:5668
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4740

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\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
2e8eb51096d6f6781456fef7df731d97

SHA1
ec2aaf851a618fb43c3d040a13a71997c25bda43

SHA256
96bfd9dd5883329927fe8c08b8956355a1a6ceb30ceeb5d4252b346df32bc864

SHA512
0a73dc9a49f92d9dd556c2ca2e36761890b3538f355ee1f013e7cf648d8c4d065f28046cd4a167db3dea304d1fbcbcea68d11ce6e12a3f20f8b6c018a60422d2

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

Filesize
948B

MD5
4f5f260adddac5f80eb2d1c0784a2e24

SHA1
8719894ff1664202f9e228c55f94d62dcaf12cce

SHA256
7b41d9c769cb20c7ad73e7afa44f964fd7fe66be45d2b0a2ef438dc985433202

SHA512
aa4a23298fda2e7bd6168bcb25b4a215616bccf73705e3566b6b576bf33bb9336682ace3354643332c940c5ee02eef59682a77447ba2f94e97ae0b4722ef0ba7

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

Filesize
1KB

MD5
0ac871344dc49ae49f13f0f88acb4868

SHA1
5a073862375c7e79255bb0eab32c635b57a77f98

SHA256
688f15b59a784f6f4c62554f00b5d0840d1489cef989c18126c70dfee0806d37

SHA512
ace5c50303bd27998607cf34ac4322bcf5edfbd19bbb24309acf4d037b6f3f7636c7c14b6ac0b924114e036252d3a1b998951c7068f41548728fa5d92f5f9006

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

Filesize
1KB

MD5
c321dfee531730b7e0b81470b947da3f

SHA1
0488401f4fc03bcdab19eeff194ff12f4439e1cb

SHA256
6d7da148fe930cf085b5369427eb24e66844d7f00fcc197f056e0763c7a76117

SHA512
eee78a9529b1d89631ac8dbaef716eba95166d8c465a2c075bf89d28fab4c25a48c4d29d7f19ab0249b245bf45fac63214b092aaef9b3a09b4f8e6cfa85a076a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_adcvhb1a.xdu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/3388-66-0x0000017E267B0000-0x0000017E267BA000-memory.dmp

Filesize
40KB

Download
memory/3388-32-0x0000017E3F080000-0x0000017E3F09E000-memory.dmp

Filesize
120KB

Download
memory/3388-84-0x00007FFF91220000-0x00007FFF91CE2000-memory.dmp

Filesize
10.8MB

Download
memory/3388-67-0x0000017E3F0A0000-0x0000017E3F0B2000-memory.dmp

Filesize
72KB

Download
memory/3388-2-0x00007FFF91220000-0x00007FFF91CE2000-memory.dmp

Filesize
10.8MB

Download
memory/3388-30-0x0000017E3F1E0000-0x0000017E3F256000-memory.dmp

Filesize
472KB

Download
memory/3388-31-0x0000017E267F0000-0x0000017E26840000-memory.dmp

Filesize
320KB

Download
memory/3388-0-0x00007FFF91223000-0x00007FFF91225000-memory.dmp

Filesize
8KB

Download
memory/3388-1-0x0000017E24980000-0x0000017E249C0000-memory.dmp

Filesize
256KB

Download
memory/5096-14-0x00007FFF91220000-0x00007FFF91CE2000-memory.dmp

Filesize
10.8MB

Download
memory/5096-4-0x00007FFF91220000-0x00007FFF91CE2000-memory.dmp

Filesize
10.8MB

Download
memory/5096-3-0x00007FFF91220000-0x00007FFF91CE2000-memory.dmp

Filesize
10.8MB

Download
memory/5096-13-0x0000021064770000-0x0000021064792000-memory.dmp

Filesize
136KB

Download
memory/5096-17-0x00007FFF91220000-0x00007FFF91CE2000-memory.dmp

Filesize
10.8MB

Download