umbral | e22e92f946d1914fe0557fdbd725c8199651f571e9b160ad2f59571a308147b0

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 13:57

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General

Target

Umbral.exe
Size

229KB
MD5

30ccfee6c8e2ebc782110e8aa1a4c8ba
SHA1

392871b1e3628da65161b2dfd40da407939071ae
SHA256

e22e92f946d1914fe0557fdbd725c8199651f571e9b160ad2f59571a308147b0
SHA512

8cec6d2f9b5f60006adefb820225c56add9da2b50f2f3de58481ebbcbed9a859b30a4e9dcba57112f142fc63e24652ed962146c564635c88af12d0a998c390bd
SSDEEP

6144:9loZMLrIkd8g+EtXHkv/iD4CkUeRa43TwxJc6rrSHfb8e1m4Ki:foZ0L+EP8CheRa43TwxJc6rrSbp

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/3032-1-0x0000000000D60000-0x0000000000DA0000-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
2860	powershell.exe
1848	powershell.exe
2896	powershell.exe
2624	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
9	discord.com
10	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
6	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3064	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3032	Umbral.exe
2860	powershell.exe
2896	powershell.exe
2624	powershell.exe
1752	powershell.exe
1848	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3032	Umbral.exe
Token: SeIncreaseQuotaPrivilege	2016	wmic.exe
Token: SeSecurityPrivilege	2016	wmic.exe
Token: SeTakeOwnershipPrivilege	2016	wmic.exe
Token: SeLoadDriverPrivilege	2016	wmic.exe
Token: SeSystemProfilePrivilege	2016	wmic.exe
Token: SeSystemtimePrivilege	2016	wmic.exe
Token: SeProfSingleProcessPrivilege	2016	wmic.exe
Token: SeIncBasePriorityPrivilege	2016	wmic.exe
Token: SeCreatePagefilePrivilege	2016	wmic.exe
Token: SeBackupPrivilege	2016	wmic.exe
Token: SeRestorePrivilege	2016	wmic.exe
Token: SeShutdownPrivilege	2016	wmic.exe
Token: SeDebugPrivilege	2016	wmic.exe
Token: SeSystemEnvironmentPrivilege	2016	wmic.exe
Token: SeRemoteShutdownPrivilege	2016	wmic.exe
Token: SeUndockPrivilege	2016	wmic.exe
Token: SeManageVolumePrivilege	2016	wmic.exe
Token: 33	2016	wmic.exe
Token: 34	2016	wmic.exe
Token: 35	2016	wmic.exe
Token: SeIncreaseQuotaPrivilege	2016	wmic.exe
Token: SeSecurityPrivilege	2016	wmic.exe
Token: SeTakeOwnershipPrivilege	2016	wmic.exe
Token: SeLoadDriverPrivilege	2016	wmic.exe
Token: SeSystemProfilePrivilege	2016	wmic.exe
Token: SeSystemtimePrivilege	2016	wmic.exe
Token: SeProfSingleProcessPrivilege	2016	wmic.exe
Token: SeIncBasePriorityPrivilege	2016	wmic.exe
Token: SeCreatePagefilePrivilege	2016	wmic.exe
Token: SeBackupPrivilege	2016	wmic.exe
Token: SeRestorePrivilege	2016	wmic.exe
Token: SeShutdownPrivilege	2016	wmic.exe
Token: SeDebugPrivilege	2016	wmic.exe
Token: SeSystemEnvironmentPrivilege	2016	wmic.exe
Token: SeRemoteShutdownPrivilege	2016	wmic.exe
Token: SeUndockPrivilege	2016	wmic.exe
Token: SeManageVolumePrivilege	2016	wmic.exe
Token: 33	2016	wmic.exe
Token: 34	2016	wmic.exe
Token: 35	2016	wmic.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2896	powershell.exe
Token: SeDebugPrivilege	2624	powershell.exe
Token: SeDebugPrivilege	1752	powershell.exe
Token: SeIncreaseQuotaPrivilege	876	wmic.exe
Token: SeSecurityPrivilege	876	wmic.exe
Token: SeTakeOwnershipPrivilege	876	wmic.exe
Token: SeLoadDriverPrivilege	876	wmic.exe
Token: SeSystemProfilePrivilege	876	wmic.exe
Token: SeSystemtimePrivilege	876	wmic.exe
Token: SeProfSingleProcessPrivilege	876	wmic.exe
Token: SeIncBasePriorityPrivilege	876	wmic.exe
Token: SeCreatePagefilePrivilege	876	wmic.exe
Token: SeBackupPrivilege	876	wmic.exe
Token: SeRestorePrivilege	876	wmic.exe
Token: SeShutdownPrivilege	876	wmic.exe
Token: SeDebugPrivilege	876	wmic.exe
Token: SeSystemEnvironmentPrivilege	876	wmic.exe
Token: SeRemoteShutdownPrivilege	876	wmic.exe
Token: SeUndockPrivilege	876	wmic.exe
Token: SeManageVolumePrivilege	876	wmic.exe
Token: 33	876	wmic.exe
Token: 34	876	wmic.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2016	3032	Umbral.exe	30
PID 3032 wrote to memory of 2016	3032	Umbral.exe	30
PID 3032 wrote to memory of 2016	3032	Umbral.exe	30
PID 3032 wrote to memory of 2860	3032	Umbral.exe	33
PID 3032 wrote to memory of 2860	3032	Umbral.exe	33
PID 3032 wrote to memory of 2860	3032	Umbral.exe	33
PID 3032 wrote to memory of 2896	3032	Umbral.exe	35
PID 3032 wrote to memory of 2896	3032	Umbral.exe	35
PID 3032 wrote to memory of 2896	3032	Umbral.exe	35
PID 3032 wrote to memory of 2624	3032	Umbral.exe	37
PID 3032 wrote to memory of 2624	3032	Umbral.exe	37
PID 3032 wrote to memory of 2624	3032	Umbral.exe	37
PID 3032 wrote to memory of 1752	3032	Umbral.exe	39
PID 3032 wrote to memory of 1752	3032	Umbral.exe	39
PID 3032 wrote to memory of 1752	3032	Umbral.exe	39
PID 3032 wrote to memory of 876	3032	Umbral.exe	41
PID 3032 wrote to memory of 876	3032	Umbral.exe	41
PID 3032 wrote to memory of 876	3032	Umbral.exe	41
PID 3032 wrote to memory of 888	3032	Umbral.exe	43
PID 3032 wrote to memory of 888	3032	Umbral.exe	43
PID 3032 wrote to memory of 888	3032	Umbral.exe	43
PID 3032 wrote to memory of 2820	3032	Umbral.exe	45
PID 3032 wrote to memory of 2820	3032	Umbral.exe	45
PID 3032 wrote to memory of 2820	3032	Umbral.exe	45
PID 3032 wrote to memory of 1848	3032	Umbral.exe	47
PID 3032 wrote to memory of 1848	3032	Umbral.exe	47
PID 3032 wrote to memory of 1848	3032	Umbral.exe	47
PID 3032 wrote to memory of 3064	3032	Umbral.exe	49
PID 3032 wrote to memory of 3064	3032	Umbral.exe	49
PID 3032 wrote to memory of 3064	3032	Umbral.exe	49

C:\Users\Admin\AppData\Local\Temp\Umbral.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2016
- 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:2860
- 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:2896
- 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:2624
- 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:1752
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:876
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:888
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2820
- 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:1848
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3064

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\VFJTHKXPPMAZBUIF9RI7.temp

Filesize
7KB

MD5
99db8013f10f6606ffb8fea9f4e5dc38

SHA1
4ce2001f62915b2eb881aff0339d9347faa08dfe

SHA256
f4051d78177c39d53997324eb826023dcfd2e3f70f06e27be5aad8a08e70f182

SHA512
6cd927927fbef4a04473712b06e1dc06fb068abaa77657220158151fa383af229a2f2cd690bb1ed24d069770f70d54113db2f9e32f470a9fe449d028a1ac52c4

Download Submit
memory/1848-43-0x0000000001E60000-0x0000000001E68000-memory.dmp

Filesize
32KB

Download
memory/2860-7-0x000000001B4F0000-0x000000001B7D2000-memory.dmp

Filesize
2.9MB

Download
memory/2860-8-0x0000000001C70000-0x0000000001C78000-memory.dmp

Filesize
32KB

Download
memory/2896-14-0x000000001B550000-0x000000001B832000-memory.dmp

Filesize
2.9MB

Download
memory/2896-15-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/3032-0-0x000007FEF5433000-0x000007FEF5434000-memory.dmp

Filesize
4KB

Download
memory/3032-1-0x0000000000D60000-0x0000000000DA0000-memory.dmp

Filesize
256KB

Download
memory/3032-2-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

Filesize
9.9MB

Download
memory/3032-47-0x000007FEF5430000-0x000007FEF5E1C000-memory.dmp

Filesize
9.9MB

Download