umbral | 3a61a0cf3cc36d28922d8215d7ec5414685e195e694bac030bca29a32d9683a0

Analysis

max time kernel
94s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
19/01/2025, 12:54

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Umbral.exe
Size

229KB
MD5

4bc2e7ac1436d46b28811c13b73b7700
SHA1

113e650f1c5d41a20bdcf33152d2b90ba23b04e9
SHA256

3a61a0cf3cc36d28922d8215d7ec5414685e195e694bac030bca29a32d9683a0
SHA512

114eb0f25fd0d1f9378645007f327dd7d9aa99065e3982b473a89bd08fb529c3d6d0092c79dc1f6fa12ed99e2f12a7820b6e3c9254f5d838df29131bb7b2001f
SSDEEP

6144:tloZM+rIkd8g+EtXHkv/iD4/E0fAmB5Kz/Cwhl0Adb8e1mc3li:voZtL+EP8/E0fAmB5Kz/Cwhl007c

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3004-1-0x00000242D5290000-0x00000242D52D0000-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
2116	powershell.exe
3260	powershell.exe
4084	powershell.exe
4948	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
21	discord.com
22	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
4052	cmd.exe
4672	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3488	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4672	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3004	Umbral.exe
2116	powershell.exe
2116	powershell.exe
3260	powershell.exe
3260	powershell.exe
4084	powershell.exe
4084	powershell.exe
3668	powershell.exe
3668	powershell.exe
4948	powershell.exe
4948	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	Umbral.exe
Token: SeIncreaseQuotaPrivilege	1968	wmic.exe
Token: SeSecurityPrivilege	1968	wmic.exe
Token: SeTakeOwnershipPrivilege	1968	wmic.exe
Token: SeLoadDriverPrivilege	1968	wmic.exe
Token: SeSystemProfilePrivilege	1968	wmic.exe
Token: SeSystemtimePrivilege	1968	wmic.exe
Token: SeProfSingleProcessPrivilege	1968	wmic.exe
Token: SeIncBasePriorityPrivilege	1968	wmic.exe
Token: SeCreatePagefilePrivilege	1968	wmic.exe
Token: SeBackupPrivilege	1968	wmic.exe
Token: SeRestorePrivilege	1968	wmic.exe
Token: SeShutdownPrivilege	1968	wmic.exe
Token: SeDebugPrivilege	1968	wmic.exe
Token: SeSystemEnvironmentPrivilege	1968	wmic.exe
Token: SeRemoteShutdownPrivilege	1968	wmic.exe
Token: SeUndockPrivilege	1968	wmic.exe
Token: SeManageVolumePrivilege	1968	wmic.exe
Token: 33	1968	wmic.exe
Token: 34	1968	wmic.exe
Token: 35	1968	wmic.exe
Token: 36	1968	wmic.exe
Token: SeIncreaseQuotaPrivilege	1968	wmic.exe
Token: SeSecurityPrivilege	1968	wmic.exe
Token: SeTakeOwnershipPrivilege	1968	wmic.exe
Token: SeLoadDriverPrivilege	1968	wmic.exe
Token: SeSystemProfilePrivilege	1968	wmic.exe
Token: SeSystemtimePrivilege	1968	wmic.exe
Token: SeProfSingleProcessPrivilege	1968	wmic.exe
Token: SeIncBasePriorityPrivilege	1968	wmic.exe
Token: SeCreatePagefilePrivilege	1968	wmic.exe
Token: SeBackupPrivilege	1968	wmic.exe
Token: SeRestorePrivilege	1968	wmic.exe
Token: SeShutdownPrivilege	1968	wmic.exe
Token: SeDebugPrivilege	1968	wmic.exe
Token: SeSystemEnvironmentPrivilege	1968	wmic.exe
Token: SeRemoteShutdownPrivilege	1968	wmic.exe
Token: SeUndockPrivilege	1968	wmic.exe
Token: SeManageVolumePrivilege	1968	wmic.exe
Token: 33	1968	wmic.exe
Token: 34	1968	wmic.exe
Token: 35	1968	wmic.exe
Token: 36	1968	wmic.exe
Token: SeDebugPrivilege	2116	powershell.exe
Token: SeDebugPrivilege	3260	powershell.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	3668	powershell.exe
Token: SeIncreaseQuotaPrivilege	4572	wmic.exe
Token: SeSecurityPrivilege	4572	wmic.exe
Token: SeTakeOwnershipPrivilege	4572	wmic.exe
Token: SeLoadDriverPrivilege	4572	wmic.exe
Token: SeSystemProfilePrivilege	4572	wmic.exe
Token: SeSystemtimePrivilege	4572	wmic.exe
Token: SeProfSingleProcessPrivilege	4572	wmic.exe
Token: SeIncBasePriorityPrivilege	4572	wmic.exe
Token: SeCreatePagefilePrivilege	4572	wmic.exe
Token: SeBackupPrivilege	4572	wmic.exe
Token: SeRestorePrivilege	4572	wmic.exe
Token: SeShutdownPrivilege	4572	wmic.exe
Token: SeDebugPrivilege	4572	wmic.exe
Token: SeSystemEnvironmentPrivilege	4572	wmic.exe
Token: SeRemoteShutdownPrivilege	4572	wmic.exe
Token: SeUndockPrivilege	4572	wmic.exe
Token: SeManageVolumePrivilege	4572	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 1968	3004	Umbral.exe	83
PID 3004 wrote to memory of 1968	3004	Umbral.exe	83
PID 3004 wrote to memory of 848	3004	Umbral.exe	86
PID 3004 wrote to memory of 848	3004	Umbral.exe	86
PID 3004 wrote to memory of 2116	3004	Umbral.exe	88
PID 3004 wrote to memory of 2116	3004	Umbral.exe	88
PID 3004 wrote to memory of 3260	3004	Umbral.exe	90
PID 3004 wrote to memory of 3260	3004	Umbral.exe	90
PID 3004 wrote to memory of 4084	3004	Umbral.exe	92
PID 3004 wrote to memory of 4084	3004	Umbral.exe	92
PID 3004 wrote to memory of 3668	3004	Umbral.exe	94
PID 3004 wrote to memory of 3668	3004	Umbral.exe	94
PID 3004 wrote to memory of 4572	3004	Umbral.exe	97
PID 3004 wrote to memory of 4572	3004	Umbral.exe	97
PID 3004 wrote to memory of 3328	3004	Umbral.exe	99
PID 3004 wrote to memory of 3328	3004	Umbral.exe	99
PID 3004 wrote to memory of 2856	3004	Umbral.exe	101
PID 3004 wrote to memory of 2856	3004	Umbral.exe	101
PID 3004 wrote to memory of 4948	3004	Umbral.exe	103
PID 3004 wrote to memory of 4948	3004	Umbral.exe	103
PID 3004 wrote to memory of 3488	3004	Umbral.exe	105
PID 3004 wrote to memory of 3488	3004	Umbral.exe	105
PID 3004 wrote to memory of 4052	3004	Umbral.exe	107
PID 3004 wrote to memory of 4052	3004	Umbral.exe	107
PID 4052 wrote to memory of 4672	4052	cmd.exe	109
PID 4052 wrote to memory of 4672	4052	cmd.exe	109

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
848	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:3004
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1968
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:848
- 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:2116
- 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:3260
- 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:4084
- 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:3668
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4572
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3328
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2856
- 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:4948
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3488
- 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:4052
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4672

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

Replay Monitor

Loading Replay Monitor...

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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
948B

MD5
8bbd6908e148d61010a3130cb6aae4a0

SHA1
e74bcc1b0f762fcd7469d0621b9c7fe50b0c365d

SHA256
79c8ed7085737723dbc7c40b32d01ea400171787259b7458561cd5db60401023

SHA512
38057edb5f2ce86329f558bf34224c6110443635756b1b26da99f89b13e3f971bf602939f40d3fce8459cfdab4ad4fa4928ecb933ff045173535fcc46fe4855f

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
2984662ba3f86d7fcf26758b5b76754d

SHA1
bc2a43ffd898222ee84406313f3834f226928379

SHA256
f0815f797b0c1829745dd65985f28d459688f91ceb2f3d76fed2d4309589bcde

SHA512
a06251a7a14559ebf5627a3c6b03fda9ded1d4ee44991283c824ccf5011cdf67665696d2d9b23507cbb3e3b9943b9e9f79ef28d3657eb61fb99920225417ab11

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5lg53fkn.wpn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2116-4-0x00007FFF45A10000-0x00007FFF464D1000-memory.dmp

Filesize
10.8MB

Download
memory/2116-10-0x0000018E9CFB0000-0x0000018E9CFD2000-memory.dmp

Filesize
136KB

Download
memory/2116-15-0x00007FFF45A10000-0x00007FFF464D1000-memory.dmp

Filesize
10.8MB

Download
memory/2116-18-0x00007FFF45A10000-0x00007FFF464D1000-memory.dmp

Filesize
10.8MB

Download
memory/2116-3-0x00007FFF45A10000-0x00007FFF464D1000-memory.dmp

Filesize
10.8MB

Download
memory/3004-34-0x00000242EFAE0000-0x00000242EFB30000-memory.dmp

Filesize
320KB

Download
memory/3004-33-0x00000242EFB60000-0x00000242EFBD6000-memory.dmp

Filesize
472KB

Download
memory/3004-35-0x00000242D6F10000-0x00000242D6F2E000-memory.dmp

Filesize
120KB

Download
memory/3004-1-0x00000242D5290000-0x00000242D52D0000-memory.dmp

Filesize
256KB

Download
memory/3004-0-0x00007FFF45A13000-0x00007FFF45A15000-memory.dmp

Filesize
8KB

Download
memory/3004-72-0x00000242D6F50000-0x00000242D6F5A000-memory.dmp

Filesize
40KB

Download
memory/3004-73-0x00000242EFB30000-0x00000242EFB42000-memory.dmp

Filesize
72KB

Download
memory/3004-2-0x00007FFF45A10000-0x00007FFF464D1000-memory.dmp

Filesize
10.8MB

Download
memory/3004-89-0x00007FFF45A13000-0x00007FFF45A15000-memory.dmp

Filesize
8KB

Download
memory/3004-90-0x00007FFF45A10000-0x00007FFF464D1000-memory.dmp

Filesize
10.8MB

Download
memory/3004-95-0x00000242EF740000-0x00000242EF842000-memory.dmp

Filesize
1.0MB

Download
memory/3004-96-0x00007FFF45A10000-0x00007FFF464D1000-memory.dmp

Filesize
10.8MB

Download