umbral | d88d07958c691702589bfb9d7d0caf297ce70c4fd46c353a831238e97134017c

Analysis

max time kernel
23s
max time network
31s
platform
windows11-21h2_x64
resource
win11-20250207-en
resource tags

arch:x64arch:x86image:win11-20250207-enlocale:en-usos:windows11-21h2-x64system
submitted
11-02-2025 13:28

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General

Target

Umbral.exe
Size

227KB
MD5

6131d796eecfeb08a137a4f49f256313
SHA1

02a9e0194002771101f0b238efc3e693b7a60e5a
SHA256

d88d07958c691702589bfb9d7d0caf297ce70c4fd46c353a831238e97134017c
SHA512

66bf2e65b633a4b4b82c6b262d2e8e3fec1f05f35afd25c0dcf8352abd4e6a1a4dcaf064012820a9480369a66c0c1682de5dcfab0887fb22ce9263c064dfb868
SSDEEP

6144:eloZMUrIkd8g+EtXHkv/iD4YfwyqoHjgC5sqb7iawb8e1mGi:IoZrL+EP8YfwyqoHjgC5sqb7iTQ

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1240-0-0x000001C38ACA0000-0x000001C38ACE0000-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
1668	powershell.exe
4528	powershell.exe
684	powershell.exe
3792	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Umbral.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
11	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

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
728	cmd.exe
4528	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
400	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4528	PING.EXE

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
1668	powershell.exe
1668	powershell.exe
1668	powershell.exe
4528	powershell.exe
4528	powershell.exe
4528	powershell.exe
684	powershell.exe
684	powershell.exe
684	powershell.exe
4684	powershell.exe
4684	powershell.exe
4684	powershell.exe
3792	powershell.exe
3792	powershell.exe
3792	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1240	Umbral.exe
Token: SeDebugPrivilege	1668	powershell.exe
Token: SeDebugPrivilege	4528	powershell.exe
Token: SeDebugPrivilege	684	powershell.exe
Token: SeDebugPrivilege	4684	powershell.exe
Token: SeIncreaseQuotaPrivilege	4888	wmic.exe
Token: SeSecurityPrivilege	4888	wmic.exe
Token: SeTakeOwnershipPrivilege	4888	wmic.exe
Token: SeLoadDriverPrivilege	4888	wmic.exe
Token: SeSystemProfilePrivilege	4888	wmic.exe
Token: SeSystemtimePrivilege	4888	wmic.exe
Token: SeProfSingleProcessPrivilege	4888	wmic.exe
Token: SeIncBasePriorityPrivilege	4888	wmic.exe
Token: SeCreatePagefilePrivilege	4888	wmic.exe
Token: SeBackupPrivilege	4888	wmic.exe
Token: SeRestorePrivilege	4888	wmic.exe
Token: SeShutdownPrivilege	4888	wmic.exe
Token: SeDebugPrivilege	4888	wmic.exe
Token: SeSystemEnvironmentPrivilege	4888	wmic.exe
Token: SeRemoteShutdownPrivilege	4888	wmic.exe
Token: SeUndockPrivilege	4888	wmic.exe
Token: SeManageVolumePrivilege	4888	wmic.exe
Token: 33	4888	wmic.exe
Token: 34	4888	wmic.exe
Token: 35	4888	wmic.exe
Token: 36	4888	wmic.exe
Token: SeIncreaseQuotaPrivilege	4888	wmic.exe
Token: SeSecurityPrivilege	4888	wmic.exe
Token: SeTakeOwnershipPrivilege	4888	wmic.exe
Token: SeLoadDriverPrivilege	4888	wmic.exe
Token: SeSystemProfilePrivilege	4888	wmic.exe
Token: SeSystemtimePrivilege	4888	wmic.exe
Token: SeProfSingleProcessPrivilege	4888	wmic.exe
Token: SeIncBasePriorityPrivilege	4888	wmic.exe
Token: SeCreatePagefilePrivilege	4888	wmic.exe
Token: SeBackupPrivilege	4888	wmic.exe
Token: SeRestorePrivilege	4888	wmic.exe
Token: SeShutdownPrivilege	4888	wmic.exe
Token: SeDebugPrivilege	4888	wmic.exe
Token: SeSystemEnvironmentPrivilege	4888	wmic.exe
Token: SeRemoteShutdownPrivilege	4888	wmic.exe
Token: SeUndockPrivilege	4888	wmic.exe
Token: SeManageVolumePrivilege	4888	wmic.exe
Token: 33	4888	wmic.exe
Token: 34	4888	wmic.exe
Token: 35	4888	wmic.exe
Token: 36	4888	wmic.exe
Token: SeIncreaseQuotaPrivilege	3012	wmic.exe
Token: SeSecurityPrivilege	3012	wmic.exe
Token: SeTakeOwnershipPrivilege	3012	wmic.exe
Token: SeLoadDriverPrivilege	3012	wmic.exe
Token: SeSystemProfilePrivilege	3012	wmic.exe
Token: SeSystemtimePrivilege	3012	wmic.exe
Token: SeProfSingleProcessPrivilege	3012	wmic.exe
Token: SeIncBasePriorityPrivilege	3012	wmic.exe
Token: SeCreatePagefilePrivilege	3012	wmic.exe
Token: SeBackupPrivilege	3012	wmic.exe
Token: SeRestorePrivilege	3012	wmic.exe
Token: SeShutdownPrivilege	3012	wmic.exe
Token: SeDebugPrivilege	3012	wmic.exe
Token: SeSystemEnvironmentPrivilege	3012	wmic.exe
Token: SeRemoteShutdownPrivilege	3012	wmic.exe
Token: SeUndockPrivilege	3012	wmic.exe
Token: SeManageVolumePrivilege	3012	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1240 wrote to memory of 1924	1240	Umbral.exe	92
PID 1240 wrote to memory of 1924	1240	Umbral.exe	92
PID 1240 wrote to memory of 1668	1240	Umbral.exe	94
PID 1240 wrote to memory of 1668	1240	Umbral.exe	94
PID 1240 wrote to memory of 4528	1240	Umbral.exe	96
PID 1240 wrote to memory of 4528	1240	Umbral.exe	96
PID 1240 wrote to memory of 684	1240	Umbral.exe	98
PID 1240 wrote to memory of 684	1240	Umbral.exe	98
PID 1240 wrote to memory of 4684	1240	Umbral.exe	100
PID 1240 wrote to memory of 4684	1240	Umbral.exe	100
PID 1240 wrote to memory of 4888	1240	Umbral.exe	102
PID 1240 wrote to memory of 4888	1240	Umbral.exe	102
PID 1240 wrote to memory of 3012	1240	Umbral.exe	105
PID 1240 wrote to memory of 3012	1240	Umbral.exe	105
PID 1240 wrote to memory of 3632	1240	Umbral.exe	107
PID 1240 wrote to memory of 3632	1240	Umbral.exe	107
PID 1240 wrote to memory of 3792	1240	Umbral.exe	109
PID 1240 wrote to memory of 3792	1240	Umbral.exe	109
PID 1240 wrote to memory of 400	1240	Umbral.exe	111
PID 1240 wrote to memory of 400	1240	Umbral.exe	111
PID 1240 wrote to memory of 728	1240	Umbral.exe	116
PID 1240 wrote to memory of 728	1240	Umbral.exe	116
PID 728 wrote to memory of 4528	728	cmd.exe	118
PID 728 wrote to memory of 4528	728	cmd.exe	118

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
1924	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Umbral.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:1924
- 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:1668
- 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:4528
- 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:684
- 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:4684
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4888
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3012
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3632
- 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:3792
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:400
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Umbral.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:728
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4528

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --string-annotations --always-read-main-dll --field-trial-handle=5204,i,16294233882891958660,8619871275160685719,262144 --variations-seed-version --mojo-platform-channel-handle=3900 /prefetch:14
1⤵
PID:3752

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
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
6bddc96a32b9ed8fc70b141ccf4a39b2

SHA1
0f33c0699da40a5eadcec646791cf21cdb0dd7c6

SHA256
cb3853abe77eb0da8a1caccb49e97a573b6f35570722eb759116a645d724c132

SHA512
e41f1597b4129b759e4199db195df1c24e47cc47dc9850fab2d48e44bc3d37dc3658fbfbb62332a0b93c552587d7fab09de1634f605faa2209b8470c2a6eaca6

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
8473c0720d50f160d2a0aa6f2c469195

SHA1
12178cc31b143c8e205c974340c73f34aeadb1c2

SHA256
575c9adfd431e013e5bfb5e133b805ed9e7aa77da05be167f3f8b92211e643b0

SHA512
61fe1040a5fbc1c0bf7290bc63b336152831647cafda9d491ae65f927b49fad9d8feb867115eddc8aeab6a8d5c3fd398edde0d177b11180b33982deefd52ceaf

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4ogohotx.1k0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1240-66-0x000001C3A5400000-0x000001C3A540A000-memory.dmp

Filesize
40KB

Download
memory/1240-2-0x00007FFB94F80000-0x00007FFB95189000-memory.dmp

Filesize
2.0MB

Download
memory/1240-34-0x000001C3A5410000-0x000001C3A542E000-memory.dmp

Filesize
120KB

Download
memory/1240-33-0x000001C3A54E0000-0x000001C3A5530000-memory.dmp

Filesize
320KB

Download
memory/1240-83-0x00007FFB94F80000-0x00007FFB95189000-memory.dmp

Filesize
2.0MB

Download
memory/1240-82-0x00007FFB94F80000-0x00007FFB95189000-memory.dmp

Filesize
2.0MB

Download
memory/1240-0-0x000001C38ACA0000-0x000001C38ACE0000-memory.dmp

Filesize
256KB

Download
memory/1240-32-0x000001C3A5460000-0x000001C3A54D6000-memory.dmp

Filesize
472KB

Download
memory/1240-88-0x00007FFB94F80000-0x00007FFB95189000-memory.dmp

Filesize
2.0MB

Download
memory/1240-67-0x000001C3A5530000-0x000001C3A5542000-memory.dmp

Filesize
72KB

Download
memory/1240-1-0x00007FFB94F80000-0x00007FFB95189000-memory.dmp

Filesize
2.0MB

Download
memory/1668-5-0x00007FFB94F80000-0x00007FFB95189000-memory.dmp

Filesize
2.0MB

Download
memory/1668-16-0x00007FFB94F80000-0x00007FFB95189000-memory.dmp

Filesize
2.0MB

Download
memory/1668-15-0x00007FFB94F80000-0x00007FFB95189000-memory.dmp

Filesize
2.0MB

Download
memory/1668-4-0x00007FFB94F80000-0x00007FFB95189000-memory.dmp

Filesize
2.0MB

Download
memory/1668-14-0x00000290B1B10000-0x00000290B1B32000-memory.dmp

Filesize
136KB

Download
memory/1668-19-0x00007FFB94F80000-0x00007FFB95189000-memory.dmp

Filesize
2.0MB

Download
memory/1668-3-0x00007FFB94F80000-0x00007FFB95189000-memory.dmp

Filesize
2.0MB

Download