umbral | 61a29cd27dd6aeac57e0ca467a3f87a04e4a7a122434d5db495cf34c7097f9e8

Analysis

max time kernel
101s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2025, 20:17

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General

Target

Umbral.exe
Size

229KB
MD5

fdb6c9cdf5605efda3e45942dad869d4
SHA1

8022afe157b98ad5fd5ead6f17ce35caff40b168
SHA256

bea3c8ebdb0c815aff349ef6ad6f0d92751ae62e4ced9ac2c68582d4e9d1c0af
SHA512

434a552c3dbdf7024f4a557ce9f01f755037aa303da03ed7752c9d1acd6c5fa050deef34983c7f491237a5c7adb3317db279b6e8e0bd3dab8bc0547dc031455e
SSDEEP

6144:lloZM+rIkd8g+EtXHkv/iD4ggxVFzQEbsCzFQMpf7b8e1mAUi:noZ1L+EP8ggxVFzQEbsCzFQMpXz

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3928-1-0x000002E34A340000-0x000002E34A380000-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
1920	powershell.exe
1408	powershell.exe
3388	powershell.exe
4744	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
30	discord.com
31	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
18	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
4376	cmd.exe
5464	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1392	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5464	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1920	powershell.exe
1920	powershell.exe
3388	powershell.exe
3388	powershell.exe
4744	powershell.exe
4744	powershell.exe
6136	powershell.exe
6136	powershell.exe
1408	powershell.exe
1408	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3928	Umbral.exe
Token: SeDebugPrivilege	1920	powershell.exe
Token: SeDebugPrivilege	3388	powershell.exe
Token: SeDebugPrivilege	4744	powershell.exe
Token: SeDebugPrivilege	6136	powershell.exe
Token: SeIncreaseQuotaPrivilege	5696	wmic.exe
Token: SeSecurityPrivilege	5696	wmic.exe
Token: SeTakeOwnershipPrivilege	5696	wmic.exe
Token: SeLoadDriverPrivilege	5696	wmic.exe
Token: SeSystemProfilePrivilege	5696	wmic.exe
Token: SeSystemtimePrivilege	5696	wmic.exe
Token: SeProfSingleProcessPrivilege	5696	wmic.exe
Token: SeIncBasePriorityPrivilege	5696	wmic.exe
Token: SeCreatePagefilePrivilege	5696	wmic.exe
Token: SeBackupPrivilege	5696	wmic.exe
Token: SeRestorePrivilege	5696	wmic.exe
Token: SeShutdownPrivilege	5696	wmic.exe
Token: SeDebugPrivilege	5696	wmic.exe
Token: SeSystemEnvironmentPrivilege	5696	wmic.exe
Token: SeRemoteShutdownPrivilege	5696	wmic.exe
Token: SeUndockPrivilege	5696	wmic.exe
Token: SeManageVolumePrivilege	5696	wmic.exe
Token: 33	5696	wmic.exe
Token: 34	5696	wmic.exe
Token: 35	5696	wmic.exe
Token: 36	5696	wmic.exe
Token: SeIncreaseQuotaPrivilege	5696	wmic.exe
Token: SeSecurityPrivilege	5696	wmic.exe
Token: SeTakeOwnershipPrivilege	5696	wmic.exe
Token: SeLoadDriverPrivilege	5696	wmic.exe
Token: SeSystemProfilePrivilege	5696	wmic.exe
Token: SeSystemtimePrivilege	5696	wmic.exe
Token: SeProfSingleProcessPrivilege	5696	wmic.exe
Token: SeIncBasePriorityPrivilege	5696	wmic.exe
Token: SeCreatePagefilePrivilege	5696	wmic.exe
Token: SeBackupPrivilege	5696	wmic.exe
Token: SeRestorePrivilege	5696	wmic.exe
Token: SeShutdownPrivilege	5696	wmic.exe
Token: SeDebugPrivilege	5696	wmic.exe
Token: SeSystemEnvironmentPrivilege	5696	wmic.exe
Token: SeRemoteShutdownPrivilege	5696	wmic.exe
Token: SeUndockPrivilege	5696	wmic.exe
Token: SeManageVolumePrivilege	5696	wmic.exe
Token: 33	5696	wmic.exe
Token: 34	5696	wmic.exe
Token: 35	5696	wmic.exe
Token: 36	5696	wmic.exe
Token: SeIncreaseQuotaPrivilege	5528	wmic.exe
Token: SeSecurityPrivilege	5528	wmic.exe
Token: SeTakeOwnershipPrivilege	5528	wmic.exe
Token: SeLoadDriverPrivilege	5528	wmic.exe
Token: SeSystemProfilePrivilege	5528	wmic.exe
Token: SeSystemtimePrivilege	5528	wmic.exe
Token: SeProfSingleProcessPrivilege	5528	wmic.exe
Token: SeIncBasePriorityPrivilege	5528	wmic.exe
Token: SeCreatePagefilePrivilege	5528	wmic.exe
Token: SeBackupPrivilege	5528	wmic.exe
Token: SeRestorePrivilege	5528	wmic.exe
Token: SeShutdownPrivilege	5528	wmic.exe
Token: SeDebugPrivilege	5528	wmic.exe
Token: SeSystemEnvironmentPrivilege	5528	wmic.exe
Token: SeRemoteShutdownPrivilege	5528	wmic.exe
Token: SeUndockPrivilege	5528	wmic.exe
Token: SeManageVolumePrivilege	5528	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 3928 wrote to memory of 720	3928	Umbral.exe	85
PID 3928 wrote to memory of 720	3928	Umbral.exe	85
PID 3928 wrote to memory of 1920	3928	Umbral.exe	87
PID 3928 wrote to memory of 1920	3928	Umbral.exe	87
PID 3928 wrote to memory of 3388	3928	Umbral.exe	89
PID 3928 wrote to memory of 3388	3928	Umbral.exe	89
PID 3928 wrote to memory of 4744	3928	Umbral.exe	94
PID 3928 wrote to memory of 4744	3928	Umbral.exe	94
PID 3928 wrote to memory of 6136	3928	Umbral.exe	96
PID 3928 wrote to memory of 6136	3928	Umbral.exe	96
PID 3928 wrote to memory of 5696	3928	Umbral.exe	100
PID 3928 wrote to memory of 5696	3928	Umbral.exe	100
PID 3928 wrote to memory of 5528	3928	Umbral.exe	103
PID 3928 wrote to memory of 5528	3928	Umbral.exe	103
PID 3928 wrote to memory of 1828	3928	Umbral.exe	105
PID 3928 wrote to memory of 1828	3928	Umbral.exe	105
PID 3928 wrote to memory of 1408	3928	Umbral.exe	107
PID 3928 wrote to memory of 1408	3928	Umbral.exe	107
PID 3928 wrote to memory of 1392	3928	Umbral.exe	109
PID 3928 wrote to memory of 1392	3928	Umbral.exe	109
PID 3928 wrote to memory of 4376	3928	Umbral.exe	112
PID 3928 wrote to memory of 4376	3928	Umbral.exe	112
PID 4376 wrote to memory of 5464	4376	cmd.exe	114
PID 4376 wrote to memory of 5464	4376	cmd.exe	114

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
720	attrib.exe

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:3928
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:720
- 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:1920
- 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:3388
- 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:4744
- 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:6136
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5696
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:5528
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1828
- 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:1408
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1392
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Umbral.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4376
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:5464

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\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
555e68af1b8e33f84346bf2335e6191a

SHA1
fa078ed3a608f05ae2dd2db8ed52d6bafe8d510e

SHA256
91a76a2c6c73116293fb7e5bfb12b00ef8128a04fbbb44153f4fd63794b2b8ae

SHA512
6f3d5be098271b844d0cbd21d902e68ce80f0bcfa67e3fb507d11bacf15227d3e66397fec2691d7f3333194d4d2067ea416bcbb1d9739f661db3bab0259af44e

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

Filesize
948B

MD5
966914e2e771de7a4a57a95b6ecfa8a9

SHA1
7a32282fd51dd032967ed4d9a40cc57e265aeff2

SHA256
98d3c70d7004fa807897317bd6cd3e977b9b6c72d4d2565aca0f9f8b1c315cba

SHA512
dc39c7124a9c7c8d4c7e8e16290c46360b8d9a8f4e43edaacbbeb09bdcf20159a53db54d2b322372001b6a3de52b2f88e9088b5fdbc7638816ae0d122bb015f5

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

Filesize
1KB

MD5
88be3bc8a7f90e3953298c0fdbec4d72

SHA1
f4969784ad421cc80ef45608727aacd0f6bf2e4b

SHA256
533c8470b41084e40c5660569ebbdb7496520d449629a235e8053e84025f348a

SHA512
4fce64e2dacddbc03314048fef1ce356ee2647c14733da121c23c65507eeb8d721d6b690ad5463319b364dc4fa95904ad6ab096907f32918e3406ef438a6ef7c

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

Filesize
1KB

MD5
701392d6919b370c4dd0052496bc0da4

SHA1
ce8b2b1e3a0b074fb9947917f887ceb20eee314f

SHA256
ea259495dd0823e6cfce7ca1f20cf5fa58426a02f1640f98b9792e54e28359cd

SHA512
0ad82673546f84e6d4ed6ae0e9f14e6a8fffe7f11d9aa5e05ff7c1134dec74f4e0c85c5ac88df512b02f26d4386a980f50fa2684fcc724140242520b6a43beae

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jxi1olwt.c3v.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1408-87-0x000002C3C1E70000-0x000002C3C1EB8000-memory.dmp

Filesize
288KB

Download
memory/1920-3-0x00007FFF259B0000-0x00007FFF26471000-memory.dmp

Filesize
10.8MB

Download
memory/1920-13-0x0000016A421E0000-0x0000016A42202000-memory.dmp

Filesize
136KB

Download
memory/1920-14-0x00007FFF259B0000-0x00007FFF26471000-memory.dmp

Filesize
10.8MB

Download
memory/1920-15-0x00007FFF259B0000-0x00007FFF26471000-memory.dmp

Filesize
10.8MB

Download
memory/1920-18-0x0000016A41EC0000-0x0000016A420DC000-memory.dmp

Filesize
2.1MB

Download
memory/1920-19-0x00007FFF259B0000-0x00007FFF26471000-memory.dmp

Filesize
10.8MB

Download
memory/3928-34-0x000002E364A10000-0x000002E364A60000-memory.dmp

Filesize
320KB

Download
memory/3928-35-0x000002E3649E0000-0x000002E3649FE000-memory.dmp

Filesize
120KB

Download
memory/3928-0-0x00007FFF259B3000-0x00007FFF259B5000-memory.dmp

Filesize
8KB

Download
memory/3928-33-0x000002E364AA0000-0x000002E364B16000-memory.dmp

Filesize
472KB

Download
memory/3928-73-0x000002E364B20000-0x000002E364B32000-memory.dmp

Filesize
72KB

Download
memory/3928-72-0x000002E364A60000-0x000002E364A6A000-memory.dmp

Filesize
40KB

Download
memory/3928-1-0x000002E34A340000-0x000002E34A380000-memory.dmp

Filesize
256KB

Download
memory/3928-2-0x00007FFF259B0000-0x00007FFF26471000-memory.dmp

Filesize
10.8MB

Download
memory/3928-92-0x00007FFF259B0000-0x00007FFF26471000-memory.dmp

Filesize
10.8MB

Download
memory/6136-70-0x000002182C060000-0x000002182C27C000-memory.dmp

Filesize
2.1MB

Download