umbral | daa35ab2edbc13b7f37306b80893dac1af18fb05c0d1b9f48c1703c7aeed1fdb

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
22-02-2025 18:05

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General

Target

Umbral.exe
Size

229KB
MD5

be8a080b13f974b263848937951070b4
SHA1

c04017906c786381ee5c9c5a3a81c9cf21c5d1d7
SHA256

daa35ab2edbc13b7f37306b80893dac1af18fb05c0d1b9f48c1703c7aeed1fdb
SHA512

f7a3c1c20d4a2a9311e578671d889b05f2e39e55b3c4c1d92d712ea094dbb27bd50fd57234701ec2e84fb29a106130a2ec968061907c7fbd1b58d4b58665e9df
SSDEEP

6144:lloZM9rIkd8g+EtXHkv/iD4e0GesyVtG3TOMdRYIiOb8e1mroa6i:noZOL+EP8e0GesyVtG3TOMdRY3y6oa/

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/2012-1-0x0000020F03E90000-0x0000020F03ED0000-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
3312	powershell.exe
1864	powershell.exe
2004	powershell.exe
4860	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
15	discord.com
14	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
5	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
424	cmd.exe
4876	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4280	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4876	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
4860	powershell.exe
4860	powershell.exe
3312	powershell.exe
3312	powershell.exe
1864	powershell.exe
1864	powershell.exe
4168	powershell.exe
4168	powershell.exe
2004	powershell.exe
2004	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2012	Umbral.exe
Token: SeDebugPrivilege	4860	powershell.exe
Token: SeDebugPrivilege	3312	powershell.exe
Token: SeDebugPrivilege	1864	powershell.exe
Token: SeDebugPrivilege	4168	powershell.exe
Token: SeIncreaseQuotaPrivilege	2804	wmic.exe
Token: SeSecurityPrivilege	2804	wmic.exe
Token: SeTakeOwnershipPrivilege	2804	wmic.exe
Token: SeLoadDriverPrivilege	2804	wmic.exe
Token: SeSystemProfilePrivilege	2804	wmic.exe
Token: SeSystemtimePrivilege	2804	wmic.exe
Token: SeProfSingleProcessPrivilege	2804	wmic.exe
Token: SeIncBasePriorityPrivilege	2804	wmic.exe
Token: SeCreatePagefilePrivilege	2804	wmic.exe
Token: SeBackupPrivilege	2804	wmic.exe
Token: SeRestorePrivilege	2804	wmic.exe
Token: SeShutdownPrivilege	2804	wmic.exe
Token: SeDebugPrivilege	2804	wmic.exe
Token: SeSystemEnvironmentPrivilege	2804	wmic.exe
Token: SeRemoteShutdownPrivilege	2804	wmic.exe
Token: SeUndockPrivilege	2804	wmic.exe
Token: SeManageVolumePrivilege	2804	wmic.exe
Token: 33	2804	wmic.exe
Token: 34	2804	wmic.exe
Token: 35	2804	wmic.exe
Token: 36	2804	wmic.exe
Token: SeIncreaseQuotaPrivilege	2804	wmic.exe
Token: SeSecurityPrivilege	2804	wmic.exe
Token: SeTakeOwnershipPrivilege	2804	wmic.exe
Token: SeLoadDriverPrivilege	2804	wmic.exe
Token: SeSystemProfilePrivilege	2804	wmic.exe
Token: SeSystemtimePrivilege	2804	wmic.exe
Token: SeProfSingleProcessPrivilege	2804	wmic.exe
Token: SeIncBasePriorityPrivilege	2804	wmic.exe
Token: SeCreatePagefilePrivilege	2804	wmic.exe
Token: SeBackupPrivilege	2804	wmic.exe
Token: SeRestorePrivilege	2804	wmic.exe
Token: SeShutdownPrivilege	2804	wmic.exe
Token: SeDebugPrivilege	2804	wmic.exe
Token: SeSystemEnvironmentPrivilege	2804	wmic.exe
Token: SeRemoteShutdownPrivilege	2804	wmic.exe
Token: SeUndockPrivilege	2804	wmic.exe
Token: SeManageVolumePrivilege	2804	wmic.exe
Token: 33	2804	wmic.exe
Token: 34	2804	wmic.exe
Token: 35	2804	wmic.exe
Token: 36	2804	wmic.exe
Token: SeIncreaseQuotaPrivilege	2924	wmic.exe
Token: SeSecurityPrivilege	2924	wmic.exe
Token: SeTakeOwnershipPrivilege	2924	wmic.exe
Token: SeLoadDriverPrivilege	2924	wmic.exe
Token: SeSystemProfilePrivilege	2924	wmic.exe
Token: SeSystemtimePrivilege	2924	wmic.exe
Token: SeProfSingleProcessPrivilege	2924	wmic.exe
Token: SeIncBasePriorityPrivilege	2924	wmic.exe
Token: SeCreatePagefilePrivilege	2924	wmic.exe
Token: SeBackupPrivilege	2924	wmic.exe
Token: SeRestorePrivilege	2924	wmic.exe
Token: SeShutdownPrivilege	2924	wmic.exe
Token: SeDebugPrivilege	2924	wmic.exe
Token: SeSystemEnvironmentPrivilege	2924	wmic.exe
Token: SeRemoteShutdownPrivilege	2924	wmic.exe
Token: SeUndockPrivilege	2924	wmic.exe
Token: SeManageVolumePrivilege	2924	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2012 wrote to memory of 2352	2012	Umbral.exe	85
PID 2012 wrote to memory of 2352	2012	Umbral.exe	85
PID 2012 wrote to memory of 4860	2012	Umbral.exe	88
PID 2012 wrote to memory of 4860	2012	Umbral.exe	88
PID 2012 wrote to memory of 3312	2012	Umbral.exe	91
PID 2012 wrote to memory of 3312	2012	Umbral.exe	91
PID 2012 wrote to memory of 1864	2012	Umbral.exe	93
PID 2012 wrote to memory of 1864	2012	Umbral.exe	93
PID 2012 wrote to memory of 4168	2012	Umbral.exe	95
PID 2012 wrote to memory of 4168	2012	Umbral.exe	95
PID 2012 wrote to memory of 2804	2012	Umbral.exe	97
PID 2012 wrote to memory of 2804	2012	Umbral.exe	97
PID 2012 wrote to memory of 2924	2012	Umbral.exe	100
PID 2012 wrote to memory of 2924	2012	Umbral.exe	100
PID 2012 wrote to memory of 1416	2012	Umbral.exe	102
PID 2012 wrote to memory of 1416	2012	Umbral.exe	102
PID 2012 wrote to memory of 2004	2012	Umbral.exe	104
PID 2012 wrote to memory of 2004	2012	Umbral.exe	104
PID 2012 wrote to memory of 4280	2012	Umbral.exe	106
PID 2012 wrote to memory of 4280	2012	Umbral.exe	106
PID 2012 wrote to memory of 424	2012	Umbral.exe	108
PID 2012 wrote to memory of 424	2012	Umbral.exe	108
PID 424 wrote to memory of 4876	424	cmd.exe	110
PID 424 wrote to memory of 4876	424	cmd.exe	110

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2352	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:2012
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:2352
- 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:4860
- 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:3312
- 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:1864
- 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:4168
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2804
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2924
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1416
- 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:2004
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4280
- 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:424
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4876

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
2979eabc783eaca50de7be23dd4eafcf

SHA1
d709ce5f3a06b7958a67e20870bfd95b83cad2ea

SHA256
006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903

SHA512
92bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba

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

Filesize
948B

MD5
74a6b79d36b4aae8b027a218bc6e1af7

SHA1
0350e46c1df6934903c4820a00b0bc4721779e5f

SHA256
60c64f6803d7ad1408d0a8628100470859b16ef332d5f1bd8bb2debe51251d04

SHA512
60e71435a9a23f4c144d641844f4182ddc9aa4ccd3e99232149a187112dce96458aab9587e9fea46f5dc5a52f5ca758969a04657a2b5b10241d3e4554f7c85e0

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
6317adf4fbc43ea2fd68861fafd57155

SHA1
6b87c718893c83c6eed2767e8d9cbc6443e31913

SHA256
c1ead17eef37b4b461cedc276504a441489e819c7f943037f2001966aeec90af

SHA512
17229aae8622e4bfc3caaac55684f7d4ccd3162af5919c851b1d8ac4060b6bb7b75044ecee116523d05acb55197dcb60780958f629450edef386f1e6f65f49f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1lo3o3ua.3vw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1864-59-0x0000018A4A4C0000-0x0000018A4A6DC000-memory.dmp

Filesize
2.1MB

Download
memory/2012-73-0x0000020F05B50000-0x0000020F05B5A000-memory.dmp

Filesize
40KB

Download
memory/2012-95-0x00007FFB8C8C0000-0x00007FFB8D381000-memory.dmp

Filesize
10.8MB

Download
memory/2012-94-0x0000020F1E820000-0x0000020F1E9C9000-memory.dmp

Filesize
1.7MB

Download
memory/2012-0-0x00007FFB8C8C3000-0x00007FFB8C8C5000-memory.dmp

Filesize
8KB

Download
memory/2012-1-0x0000020F03E90000-0x0000020F03ED0000-memory.dmp

Filesize
256KB

Download
memory/2012-33-0x0000020F1E610000-0x0000020F1E686000-memory.dmp

Filesize
472KB

Download
memory/2012-34-0x0000020F1E590000-0x0000020F1E5E0000-memory.dmp

Filesize
320KB

Download
memory/2012-35-0x0000020F05B00000-0x0000020F05B1E000-memory.dmp

Filesize
120KB

Download
memory/2012-74-0x0000020F1E690000-0x0000020F1E6A2000-memory.dmp

Filesize
72KB

Download
memory/2012-2-0x00007FFB8C8C0000-0x00007FFB8D381000-memory.dmp

Filesize
10.8MB

Download
memory/4860-13-0x00007FFB8C8C0000-0x00007FFB8D381000-memory.dmp

Filesize
10.8MB

Download
memory/4860-9-0x000001D1ADDF0000-0x000001D1ADE12000-memory.dmp

Filesize
136KB

Download
memory/4860-14-0x00007FFB8C8C0000-0x00007FFB8D381000-memory.dmp

Filesize
10.8MB

Download
memory/4860-18-0x00007FFB8C8C0000-0x00007FFB8D381000-memory.dmp

Filesize
10.8MB

Download
memory/4860-15-0x00007FFB8C8C0000-0x00007FFB8D381000-memory.dmp

Filesize
10.8MB

Download