umbral | 83fa6a1e67c9ecd7ec68e905c4474274340b96b718da2dbab29cc7fcc4c3e414

Analysis

max time kernel
436s
max time network
546s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250314-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-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
behavioral3/memory/4432-1-0x000002C80F130000-0x000002C80F170000-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
2272	powershell.exe
5964	powershell.exe
3700	powershell.exe
2860	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
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
17	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1536	wmic.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
2272	powershell.exe
2272	powershell.exe
2860	powershell.exe
2860	powershell.exe
5964	powershell.exe
5964	powershell.exe
4984	powershell.exe
4984	powershell.exe
640	wmic.exe
640	wmic.exe
640	wmic.exe
640	wmic.exe
2872	wmic.exe
2872	wmic.exe
2872	wmic.exe
2872	wmic.exe
1136	wmic.exe
1136	wmic.exe
1136	wmic.exe
1136	wmic.exe
3700	powershell.exe
3700	powershell.exe
1536	wmic.exe
1536	wmic.exe
1536	wmic.exe
1536	wmic.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4432	Umbral.exe
Token: SeDebugPrivilege	2272	powershell.exe
Token: SeIncreaseQuotaPrivilege	2272	powershell.exe
Token: SeSecurityPrivilege	2272	powershell.exe
Token: SeTakeOwnershipPrivilege	2272	powershell.exe
Token: SeLoadDriverPrivilege	2272	powershell.exe
Token: SeSystemProfilePrivilege	2272	powershell.exe
Token: SeSystemtimePrivilege	2272	powershell.exe
Token: SeProfSingleProcessPrivilege	2272	powershell.exe
Token: SeIncBasePriorityPrivilege	2272	powershell.exe
Token: SeCreatePagefilePrivilege	2272	powershell.exe
Token: SeBackupPrivilege	2272	powershell.exe
Token: SeRestorePrivilege	2272	powershell.exe
Token: SeShutdownPrivilege	2272	powershell.exe
Token: SeDebugPrivilege	2272	powershell.exe
Token: SeSystemEnvironmentPrivilege	2272	powershell.exe
Token: SeRemoteShutdownPrivilege	2272	powershell.exe
Token: SeUndockPrivilege	2272	powershell.exe
Token: SeManageVolumePrivilege	2272	powershell.exe
Token: 33	2272	powershell.exe
Token: 34	2272	powershell.exe
Token: 35	2272	powershell.exe
Token: 36	2272	powershell.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	5964	powershell.exe
Token: SeDebugPrivilege	4984	powershell.exe
Token: SeIncreaseQuotaPrivilege	640	wmic.exe
Token: SeSecurityPrivilege	640	wmic.exe
Token: SeTakeOwnershipPrivilege	640	wmic.exe
Token: SeLoadDriverPrivilege	640	wmic.exe
Token: SeSystemProfilePrivilege	640	wmic.exe
Token: SeSystemtimePrivilege	640	wmic.exe
Token: SeProfSingleProcessPrivilege	640	wmic.exe
Token: SeIncBasePriorityPrivilege	640	wmic.exe
Token: SeCreatePagefilePrivilege	640	wmic.exe
Token: SeBackupPrivilege	640	wmic.exe
Token: SeRestorePrivilege	640	wmic.exe
Token: SeShutdownPrivilege	640	wmic.exe
Token: SeDebugPrivilege	640	wmic.exe
Token: SeSystemEnvironmentPrivilege	640	wmic.exe
Token: SeRemoteShutdownPrivilege	640	wmic.exe
Token: SeUndockPrivilege	640	wmic.exe
Token: SeManageVolumePrivilege	640	wmic.exe
Token: 33	640	wmic.exe
Token: 34	640	wmic.exe
Token: 35	640	wmic.exe
Token: 36	640	wmic.exe
Token: SeIncreaseQuotaPrivilege	640	wmic.exe
Token: SeSecurityPrivilege	640	wmic.exe
Token: SeTakeOwnershipPrivilege	640	wmic.exe
Token: SeLoadDriverPrivilege	640	wmic.exe
Token: SeSystemProfilePrivilege	640	wmic.exe
Token: SeSystemtimePrivilege	640	wmic.exe
Token: SeProfSingleProcessPrivilege	640	wmic.exe
Token: SeIncBasePriorityPrivilege	640	wmic.exe
Token: SeCreatePagefilePrivilege	640	wmic.exe
Token: SeBackupPrivilege	640	wmic.exe
Token: SeRestorePrivilege	640	wmic.exe
Token: SeShutdownPrivilege	640	wmic.exe
Token: SeDebugPrivilege	640	wmic.exe
Token: SeSystemEnvironmentPrivilege	640	wmic.exe
Token: SeRemoteShutdownPrivilege	640	wmic.exe
Token: SeUndockPrivilege	640	wmic.exe
Token: SeManageVolumePrivilege	640	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4432 wrote to memory of 2272	4432	Umbral.exe	82
PID 4432 wrote to memory of 2272	4432	Umbral.exe	82
PID 4432 wrote to memory of 2860	4432	Umbral.exe	85
PID 4432 wrote to memory of 2860	4432	Umbral.exe	85
PID 4432 wrote to memory of 5964	4432	Umbral.exe	87
PID 4432 wrote to memory of 5964	4432	Umbral.exe	87
PID 4432 wrote to memory of 4984	4432	Umbral.exe	89
PID 4432 wrote to memory of 4984	4432	Umbral.exe	89
PID 4432 wrote to memory of 640	4432	Umbral.exe	93
PID 4432 wrote to memory of 640	4432	Umbral.exe	93
PID 4432 wrote to memory of 2872	4432	Umbral.exe	96
PID 4432 wrote to memory of 2872	4432	Umbral.exe	96
PID 4432 wrote to memory of 1136	4432	Umbral.exe	98
PID 4432 wrote to memory of 1136	4432	Umbral.exe	98
PID 4432 wrote to memory of 3700	4432	Umbral.exe	101
PID 4432 wrote to memory of 3700	4432	Umbral.exe	101
PID 4432 wrote to memory of 1536	4432	Umbral.exe	103
PID 4432 wrote to memory of 1536	4432	Umbral.exe	103

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:4432
- 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:2272
- 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:2860
- 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:5964
- 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:4984
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:640
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:2872
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1136
- 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:3700
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  - Suspicious behavior: EnumeratesProcesses
  PID:1536

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
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
451a38d0462e756100353adb43a088f8

SHA1
da93cf4a1060e35094ef66c912e43dc73d0cb232

SHA256
c549b97a31286f954ee3c04f7ae8a1649cf4138470125cd22b509822be0035f6

SHA512
9b04ccfeebdc69e7a8785c25337149148c2885f1d2ace2f6702982ac31128bba013cbc40c8dd4ff00b396fe638f2421fa9599056e9af2e9b0c82b7f828137594

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

Filesize
948B

MD5
687be930d63f76714a8f36f39a01aabc

SHA1
c3ee6e18b43efed98b3af2812f46b26fc6fdd585

SHA256
e459fe110f7d29d31da4980e2c25dfc19eae252ec215521cbb235bef96ee51e3

SHA512
6f7aa93dcfa9cb6f0f077fb98c3ed1ccf94955b009ca4cfefca4c888a7d3ca1294a252c3c6c977c0e323670cd9830db7836663062b052c95baa32d1b1faf4a48

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

Filesize
1KB

MD5
8e1fdd1b66d2fee9f6a052524d4ddca5

SHA1
0a9d0994559d1be2eecd8b0d6960540ca627bdb6

SHA256
4cc7c1b79d1b48582d4dc27ca8c31457b9bf2441deb7914399bb9e6863f18b13

SHA512
5a5494b878b08e8515811ab7a3d68780dac7423f5562477d98249a8bedf7ec98567b7cd5d4c6967d6bc63f2d6d9b7da9a65e0eb29d4b955026b469b5b598d1f3

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

Filesize
1KB

MD5
aedb5ffaabb0908897da3156623a5188

SHA1
83844e56f3e6e5d2d7ec5950284c913b37b77457

SHA256
0a4613f7707aa837c8e8d5f79c44e7ee23e3b6f27a5c07318c0aec7642bac3a5

SHA512
a9a87a6786ddcf4fb75360350c810d33891e53fc2f56a2b4477f7a73b5036bbe3f08806044f16178ab4f2a5e8a16e5d40e0179242ff7bd5438b890891fac1736

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_t5n4oqxv.zdm.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2272-20-0x00007FFE9AD00000-0x00007FFE9B7C2000-memory.dmp

Filesize
10.8MB

Download
memory/2272-10-0x0000029DFDF80000-0x0000029DFDFA2000-memory.dmp

Filesize
136KB

Download
memory/2272-16-0x00007FFE9AD00000-0x00007FFE9B7C2000-memory.dmp

Filesize
10.8MB

Download
memory/2272-17-0x00007FFE9AD00000-0x00007FFE9B7C2000-memory.dmp

Filesize
10.8MB

Download
memory/2272-15-0x00007FFE9AD00000-0x00007FFE9B7C2000-memory.dmp

Filesize
10.8MB

Download
memory/2272-14-0x00007FFE9AD00000-0x00007FFE9B7C2000-memory.dmp

Filesize
10.8MB

Download
memory/2272-13-0x00007FFE9AD00000-0x00007FFE9B7C2000-memory.dmp

Filesize
10.8MB

Download
memory/4432-0-0x00007FFE9AD03000-0x00007FFE9AD05000-memory.dmp

Filesize
8KB

Download
memory/4432-34-0x000002C8298D0000-0x000002C829920000-memory.dmp

Filesize
320KB

Download
memory/4432-35-0x000002C8297E0000-0x000002C8297FE000-memory.dmp

Filesize
120KB

Download
memory/4432-33-0x000002C829850000-0x000002C8298C6000-memory.dmp

Filesize
472KB

Download
memory/4432-2-0x00007FFE9AD00000-0x00007FFE9B7C2000-memory.dmp

Filesize
10.8MB

Download
memory/4432-59-0x000002C829810000-0x000002C82981A000-memory.dmp

Filesize
40KB

Download
memory/4432-60-0x000002C829920000-0x000002C829932000-memory.dmp

Filesize
72KB

Download
memory/4432-1-0x000002C80F130000-0x000002C80F170000-memory.dmp

Filesize
256KB

Download
memory/4432-78-0x00007FFE9AD00000-0x00007FFE9B7C2000-memory.dmp

Filesize
10.8MB

Download