umbral | d88d07958c691702589bfb9d7d0caf297ce70c4fd46c353a831238e97134017c

Analysis

max time kernel
23s
max time network
25s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
11-02-2025 13:29

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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/2608-1-0x0000000000FD0000-0x0000000001010000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1832	powershell.exe
2676	powershell.exe
2680	powershell.exe
2148	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
2424	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
8	discord.com
9	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
2424	cmd.exe
460	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2312	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
460	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2148	powershell.exe
2676	powershell.exe
2680	powershell.exe
2648	powershell.exe
1832	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2608	Umbral.exe
Token: SeDebugPrivilege	2148	powershell.exe
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	2648	powershell.exe
Token: SeIncreaseQuotaPrivilege	308	wmic.exe
Token: SeSecurityPrivilege	308	wmic.exe
Token: SeTakeOwnershipPrivilege	308	wmic.exe
Token: SeLoadDriverPrivilege	308	wmic.exe
Token: SeSystemProfilePrivilege	308	wmic.exe
Token: SeSystemtimePrivilege	308	wmic.exe
Token: SeProfSingleProcessPrivilege	308	wmic.exe
Token: SeIncBasePriorityPrivilege	308	wmic.exe
Token: SeCreatePagefilePrivilege	308	wmic.exe
Token: SeBackupPrivilege	308	wmic.exe
Token: SeRestorePrivilege	308	wmic.exe
Token: SeShutdownPrivilege	308	wmic.exe
Token: SeDebugPrivilege	308	wmic.exe
Token: SeSystemEnvironmentPrivilege	308	wmic.exe
Token: SeRemoteShutdownPrivilege	308	wmic.exe
Token: SeUndockPrivilege	308	wmic.exe
Token: SeManageVolumePrivilege	308	wmic.exe
Token: 33	308	wmic.exe
Token: 34	308	wmic.exe
Token: 35	308	wmic.exe
Token: SeIncreaseQuotaPrivilege	308	wmic.exe
Token: SeSecurityPrivilege	308	wmic.exe
Token: SeTakeOwnershipPrivilege	308	wmic.exe
Token: SeLoadDriverPrivilege	308	wmic.exe
Token: SeSystemProfilePrivilege	308	wmic.exe
Token: SeSystemtimePrivilege	308	wmic.exe
Token: SeProfSingleProcessPrivilege	308	wmic.exe
Token: SeIncBasePriorityPrivilege	308	wmic.exe
Token: SeCreatePagefilePrivilege	308	wmic.exe
Token: SeBackupPrivilege	308	wmic.exe
Token: SeRestorePrivilege	308	wmic.exe
Token: SeShutdownPrivilege	308	wmic.exe
Token: SeDebugPrivilege	308	wmic.exe
Token: SeSystemEnvironmentPrivilege	308	wmic.exe
Token: SeRemoteShutdownPrivilege	308	wmic.exe
Token: SeUndockPrivilege	308	wmic.exe
Token: SeManageVolumePrivilege	308	wmic.exe
Token: 33	308	wmic.exe
Token: 34	308	wmic.exe
Token: 35	308	wmic.exe
Token: SeIncreaseQuotaPrivilege	2968	wmic.exe
Token: SeSecurityPrivilege	2968	wmic.exe
Token: SeTakeOwnershipPrivilege	2968	wmic.exe
Token: SeLoadDriverPrivilege	2968	wmic.exe
Token: SeSystemProfilePrivilege	2968	wmic.exe
Token: SeSystemtimePrivilege	2968	wmic.exe
Token: SeProfSingleProcessPrivilege	2968	wmic.exe
Token: SeIncBasePriorityPrivilege	2968	wmic.exe
Token: SeCreatePagefilePrivilege	2968	wmic.exe
Token: SeBackupPrivilege	2968	wmic.exe
Token: SeRestorePrivilege	2968	wmic.exe
Token: SeShutdownPrivilege	2968	wmic.exe
Token: SeDebugPrivilege	2968	wmic.exe
Token: SeSystemEnvironmentPrivilege	2968	wmic.exe
Token: SeRemoteShutdownPrivilege	2968	wmic.exe
Token: SeUndockPrivilege	2968	wmic.exe
Token: SeManageVolumePrivilege	2968	wmic.exe
Token: 33	2968	wmic.exe
Token: 34	2968	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2608 wrote to memory of 1144	2608	Umbral.exe	29
PID 2608 wrote to memory of 1144	2608	Umbral.exe	29
PID 2608 wrote to memory of 1144	2608	Umbral.exe	29
PID 2608 wrote to memory of 2148	2608	Umbral.exe	31
PID 2608 wrote to memory of 2148	2608	Umbral.exe	31
PID 2608 wrote to memory of 2148	2608	Umbral.exe	31
PID 2608 wrote to memory of 2676	2608	Umbral.exe	33
PID 2608 wrote to memory of 2676	2608	Umbral.exe	33
PID 2608 wrote to memory of 2676	2608	Umbral.exe	33
PID 2608 wrote to memory of 2680	2608	Umbral.exe	35
PID 2608 wrote to memory of 2680	2608	Umbral.exe	35
PID 2608 wrote to memory of 2680	2608	Umbral.exe	35
PID 2608 wrote to memory of 2648	2608	Umbral.exe	37
PID 2608 wrote to memory of 2648	2608	Umbral.exe	37
PID 2608 wrote to memory of 2648	2608	Umbral.exe	37
PID 2608 wrote to memory of 308	2608	Umbral.exe	39
PID 2608 wrote to memory of 308	2608	Umbral.exe	39
PID 2608 wrote to memory of 308	2608	Umbral.exe	39
PID 2608 wrote to memory of 2968	2608	Umbral.exe	42
PID 2608 wrote to memory of 2968	2608	Umbral.exe	42
PID 2608 wrote to memory of 2968	2608	Umbral.exe	42
PID 2608 wrote to memory of 3000	2608	Umbral.exe	44
PID 2608 wrote to memory of 3000	2608	Umbral.exe	44
PID 2608 wrote to memory of 3000	2608	Umbral.exe	44
PID 2608 wrote to memory of 1832	2608	Umbral.exe	46
PID 2608 wrote to memory of 1832	2608	Umbral.exe	46
PID 2608 wrote to memory of 1832	2608	Umbral.exe	46
PID 2608 wrote to memory of 2312	2608	Umbral.exe	48
PID 2608 wrote to memory of 2312	2608	Umbral.exe	48
PID 2608 wrote to memory of 2312	2608	Umbral.exe	48
PID 2608 wrote to memory of 2424	2608	Umbral.exe	50
PID 2608 wrote to memory of 2424	2608	Umbral.exe	50
PID 2608 wrote to memory of 2424	2608	Umbral.exe	50
PID 2424 wrote to memory of 460	2424	cmd.exe	52
PID 2424 wrote to memory of 460	2424	cmd.exe	52
PID 2424 wrote to memory of 460	2424	cmd.exe	52

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
1144	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:2608
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:1144
- 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:2148
- 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:2676
- 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:2680
- 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:2648
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:308
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2968
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:3000
- 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:1832
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2312
- 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:2424
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:460

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
f01b0a7cb0d6bba8d35ed5dc70d47915

SHA1
613f32d1662e23a898b8f686384edeb8f1545502

SHA256
736374ab226c5bd1ac8af3ad094dd3cf74188b8d1570cca2e2f60753f165b387

SHA512
7377e4a3d203d1f38e69f9dc77bcd5a08689db0c66f5aba11f29da1b001fda1efe5af55acb42e580361b6e69a68b4a6cd3c22a3c7e93c4c91721da6166586764

Download Submit
memory/1832-54-0x000000001B270000-0x000000001B552000-memory.dmp

Filesize
2.9MB

Download
memory/2148-14-0x000007FEECF90000-0x000007FEED92D000-memory.dmp

Filesize
9.6MB

Download
memory/2148-7-0x000007FEED24E000-0x000007FEED24F000-memory.dmp

Filesize
4KB

Download
memory/2148-9-0x0000000002470000-0x0000000002478000-memory.dmp

Filesize
32KB

Download
memory/2148-10-0x000007FEECF90000-0x000007FEED92D000-memory.dmp

Filesize
9.6MB

Download
memory/2148-11-0x000007FEECF90000-0x000007FEED92D000-memory.dmp

Filesize
9.6MB

Download
memory/2148-12-0x000007FEECF90000-0x000007FEED92D000-memory.dmp

Filesize
9.6MB

Download
memory/2148-13-0x000007FEECF90000-0x000007FEED92D000-memory.dmp

Filesize
9.6MB

Download
memory/2148-8-0x000000001B250000-0x000000001B532000-memory.dmp

Filesize
2.9MB

Download
memory/2148-15-0x000007FEECF90000-0x000007FEED92D000-memory.dmp

Filesize
9.6MB

Download
memory/2608-0-0x000007FEF5A93000-0x000007FEF5A94000-memory.dmp

Filesize
4KB

Download
memory/2608-24-0x000007FEF5A90000-0x000007FEF647C000-memory.dmp

Filesize
9.9MB

Download
memory/2608-22-0x000007FEF5A93000-0x000007FEF5A94000-memory.dmp

Filesize
4KB

Download
memory/2608-2-0x000007FEF5A90000-0x000007FEF647C000-memory.dmp

Filesize
9.9MB

Download
memory/2608-1-0x0000000000FD0000-0x0000000001010000-memory.dmp

Filesize
256KB

Download
memory/2608-59-0x000007FEF5A90000-0x000007FEF647C000-memory.dmp

Filesize
9.9MB

Download
memory/2676-21-0x000000001B420000-0x000000001B702000-memory.dmp

Filesize
2.9MB

Download
memory/2676-23-0x00000000022A0000-0x00000000022A8000-memory.dmp

Filesize
32KB

Download