umbral | bd70c0afeae8898be7749a6078f44829d655bbabaebfbe6b4ef8286ad410f65d

Analysis

max time kernel
106s
max time network
142s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250314-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-x64system
submitted
23/03/2025, 19:13

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General

Target

Umbral.exe
Size

228KB
MD5

e8c01c0574c522af2bbc4fc6dd53142f
SHA1

0b1ee816c4324d7db00842451c8759e91cfddab3
SHA256

bd70c0afeae8898be7749a6078f44829d655bbabaebfbe6b4ef8286ad410f65d
SHA512

2d800b808ae65e9900e9d21b82ddcafe9b4c066514bf23ebb43de1f62da13d0cd6fa09de2a8e81388712a72fa999ef201281b7c9e698d33a33a9fa93e3a6e08b
SSDEEP

6144:OloZMHrIkd8g+EtXHkv/iD4VRCamkrHMZ9YW3X23fQb8e1mS/i:YoZIL+EP8VRCamkrHMZ9YW3X2A+

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3364-1-0x00000202BE220000-0x00000202BE260000-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
1612	powershell.exe
1892	powershell.exe
5004	powershell.exe
5108	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
20	discord.com
21	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
3556	wmic.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
1612	powershell.exe
1612	powershell.exe
1892	powershell.exe
1892	powershell.exe
5004	powershell.exe
5004	powershell.exe
2180	powershell.exe
2180	powershell.exe
3964	wmic.exe
3964	wmic.exe
3964	wmic.exe
3964	wmic.exe
4212	wmic.exe
4212	wmic.exe
4212	wmic.exe
4212	wmic.exe
1996	wmic.exe
1996	wmic.exe
1996	wmic.exe
1996	wmic.exe
5108	powershell.exe
5108	powershell.exe
3556	wmic.exe
3556	wmic.exe
3556	wmic.exe
3556	wmic.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3364	Umbral.exe
Token: SeDebugPrivilege	1612	powershell.exe
Token: SeIncreaseQuotaPrivilege	1612	powershell.exe
Token: SeSecurityPrivilege	1612	powershell.exe
Token: SeTakeOwnershipPrivilege	1612	powershell.exe
Token: SeLoadDriverPrivilege	1612	powershell.exe
Token: SeSystemProfilePrivilege	1612	powershell.exe
Token: SeSystemtimePrivilege	1612	powershell.exe
Token: SeProfSingleProcessPrivilege	1612	powershell.exe
Token: SeIncBasePriorityPrivilege	1612	powershell.exe
Token: SeCreatePagefilePrivilege	1612	powershell.exe
Token: SeBackupPrivilege	1612	powershell.exe
Token: SeRestorePrivilege	1612	powershell.exe
Token: SeShutdownPrivilege	1612	powershell.exe
Token: SeDebugPrivilege	1612	powershell.exe
Token: SeSystemEnvironmentPrivilege	1612	powershell.exe
Token: SeRemoteShutdownPrivilege	1612	powershell.exe
Token: SeUndockPrivilege	1612	powershell.exe
Token: SeManageVolumePrivilege	1612	powershell.exe
Token: 33	1612	powershell.exe
Token: 34	1612	powershell.exe
Token: 35	1612	powershell.exe
Token: 36	1612	powershell.exe
Token: SeDebugPrivilege	1892	powershell.exe
Token: SeDebugPrivilege	5004	powershell.exe
Token: SeDebugPrivilege	2180	powershell.exe
Token: SeIncreaseQuotaPrivilege	3964	wmic.exe
Token: SeSecurityPrivilege	3964	wmic.exe
Token: SeTakeOwnershipPrivilege	3964	wmic.exe
Token: SeLoadDriverPrivilege	3964	wmic.exe
Token: SeSystemProfilePrivilege	3964	wmic.exe
Token: SeSystemtimePrivilege	3964	wmic.exe
Token: SeProfSingleProcessPrivilege	3964	wmic.exe
Token: SeIncBasePriorityPrivilege	3964	wmic.exe
Token: SeCreatePagefilePrivilege	3964	wmic.exe
Token: SeBackupPrivilege	3964	wmic.exe
Token: SeRestorePrivilege	3964	wmic.exe
Token: SeShutdownPrivilege	3964	wmic.exe
Token: SeDebugPrivilege	3964	wmic.exe
Token: SeSystemEnvironmentPrivilege	3964	wmic.exe
Token: SeRemoteShutdownPrivilege	3964	wmic.exe
Token: SeUndockPrivilege	3964	wmic.exe
Token: SeManageVolumePrivilege	3964	wmic.exe
Token: 33	3964	wmic.exe
Token: 34	3964	wmic.exe
Token: 35	3964	wmic.exe
Token: 36	3964	wmic.exe
Token: SeIncreaseQuotaPrivilege	3964	wmic.exe
Token: SeSecurityPrivilege	3964	wmic.exe
Token: SeTakeOwnershipPrivilege	3964	wmic.exe
Token: SeLoadDriverPrivilege	3964	wmic.exe
Token: SeSystemProfilePrivilege	3964	wmic.exe
Token: SeSystemtimePrivilege	3964	wmic.exe
Token: SeProfSingleProcessPrivilege	3964	wmic.exe
Token: SeIncBasePriorityPrivilege	3964	wmic.exe
Token: SeCreatePagefilePrivilege	3964	wmic.exe
Token: SeBackupPrivilege	3964	wmic.exe
Token: SeRestorePrivilege	3964	wmic.exe
Token: SeShutdownPrivilege	3964	wmic.exe
Token: SeDebugPrivilege	3964	wmic.exe
Token: SeSystemEnvironmentPrivilege	3964	wmic.exe
Token: SeRemoteShutdownPrivilege	3964	wmic.exe
Token: SeUndockPrivilege	3964	wmic.exe
Token: SeManageVolumePrivilege	3964	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3364 wrote to memory of 1612	3364	Umbral.exe	82
PID 3364 wrote to memory of 1612	3364	Umbral.exe	82
PID 3364 wrote to memory of 1892	3364	Umbral.exe	87
PID 3364 wrote to memory of 1892	3364	Umbral.exe	87
PID 3364 wrote to memory of 5004	3364	Umbral.exe	91
PID 3364 wrote to memory of 5004	3364	Umbral.exe	91
PID 3364 wrote to memory of 2180	3364	Umbral.exe	93
PID 3364 wrote to memory of 2180	3364	Umbral.exe	93
PID 3364 wrote to memory of 3964	3364	Umbral.exe	95
PID 3364 wrote to memory of 3964	3364	Umbral.exe	95
PID 3364 wrote to memory of 4212	3364	Umbral.exe	98
PID 3364 wrote to memory of 4212	3364	Umbral.exe	98
PID 3364 wrote to memory of 1996	3364	Umbral.exe	100
PID 3364 wrote to memory of 1996	3364	Umbral.exe	100
PID 3364 wrote to memory of 5108	3364	Umbral.exe	102
PID 3364 wrote to memory of 5108	3364	Umbral.exe	102
PID 3364 wrote to memory of 3556	3364	Umbral.exe	104
PID 3364 wrote to memory of 3556	3364	Umbral.exe	104

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:3364
- 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:1612
- 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:1892
- 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:5004
- 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:2180
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3964
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:4212
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1996
- 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:5108
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  - Suspicious behavior: EnumeratesProcesses
  PID:3556

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

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
c285fc8c9c2d261304554d2d9722be0a

SHA1
4adba3127d6b5010e27e54e7ca5faae4de349673

SHA256
a6e5951ec501a71aaee0735f54095f8abd84d80b84f1a638a7a4e661383b4257

SHA512
28a8d77fdf0d53a0ff9f7e025e6e75787aab8173ddbf6323d8a1921e615b605afaafcd6d294e6a8f6e76d19408c5cffada0f19cf911899f648bda46ae9b8b9aa

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

Filesize
948B

MD5
cd4e1330b55d633a92e6a831f06fb4ef

SHA1
b06925fba40584f8d8864a13b71828a33dd40051

SHA256
c563e52f15c87dd1caeda1df794ea23f65878dca4e12aec2787e70bc6a519942

SHA512
8a822e934596798eaa3b35cea47291c8ca275639ff818dceab28d12124614fd245ccdb4d94d868484c18325c8c4412f7614369847817c10512d91e7b93d90139

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
86b2bb0c97f174f24adbb25cbff90a71

SHA1
9df68dbc738dc183b08d63bd25c5d0a883d0a5b2

SHA256
af0c4aa98ccbd73aff9e0dfdbb4711e11c021c87bcfaff105535f7289b02757d

SHA512
ac4093423486d4efd54a82e7997aa5a0a506d47deeb147efc63a8148d1e560b5b77b9ddf53e2b673ca516027f7805389c717278a9b56a2d6a37bf6f6df4e4500

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qbh3cmtf.ab0.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1612-14-0x00007FFCE7B50000-0x00007FFCE8612000-memory.dmp

Filesize
10.8MB

Download
memory/1612-15-0x00007FFCE7B50000-0x00007FFCE8612000-memory.dmp

Filesize
10.8MB

Download
memory/1612-16-0x00007FFCE7B50000-0x00007FFCE8612000-memory.dmp

Filesize
10.8MB

Download
memory/1612-17-0x00007FFCE7B50000-0x00007FFCE8612000-memory.dmp

Filesize
10.8MB

Download
memory/1612-20-0x00007FFCE7B50000-0x00007FFCE8612000-memory.dmp

Filesize
10.8MB

Download
memory/1612-12-0x000002A633160000-0x000002A633182000-memory.dmp

Filesize
136KB

Download
memory/1612-13-0x00007FFCE7B50000-0x00007FFCE8612000-memory.dmp

Filesize
10.8MB

Download
memory/3364-35-0x00000202D8A60000-0x00000202D8A7E000-memory.dmp

Filesize
120KB

Download
memory/3364-34-0x00000202BFFF0000-0x00000202C0040000-memory.dmp

Filesize
320KB

Download
memory/3364-33-0x00000202D89E0000-0x00000202D8A56000-memory.dmp

Filesize
472KB

Download
memory/3364-0-0x00007FFCE7B53000-0x00007FFCE7B55000-memory.dmp

Filesize
8KB

Download
memory/3364-2-0x00007FFCE7B50000-0x00007FFCE8612000-memory.dmp

Filesize
10.8MB

Download
memory/3364-59-0x00000202D8970000-0x00000202D897A000-memory.dmp

Filesize
40KB

Download
memory/3364-60-0x00000202D89A0000-0x00000202D89B2000-memory.dmp

Filesize
72KB

Download
memory/3364-63-0x00007FFCE7B53000-0x00007FFCE7B55000-memory.dmp

Filesize
8KB

Download
memory/3364-64-0x00007FFCE7B50000-0x00007FFCE8612000-memory.dmp

Filesize
10.8MB

Download
memory/3364-1-0x00000202BE220000-0x00000202BE260000-memory.dmp

Filesize
256KB

Download
memory/3364-75-0x00000202D8C00000-0x00000202D8DA7000-memory.dmp

Filesize
1.7MB

Download
memory/3364-81-0x00000202D8C00000-0x00000202D8DA7000-memory.dmp

Filesize
1.7MB

Download
memory/3364-82-0x00007FFCE7B50000-0x00007FFCE8612000-memory.dmp

Filesize
10.8MB

Download