umbral | 61a29cd27dd6aeac57e0ca467a3f87a04e4a7a122434d5db495cf34c7097f9e8

Analysis

max time kernel
443s
max time network
447s
platform
windows11-21h2_x64
resource
win11-20250313-en
resource tags

arch:x64arch:x86image:win11-20250313-enlocale:en-usos:windows11-21h2-x64system
submitted
25/03/2025, 19:56

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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
behavioral6/memory/4588-1-0x000002030CF80000-0x000002030CFC0000-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
3040	powershell.exe
1580	powershell.exe
1032	powershell.exe
5532	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
1	discord.com
4	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
1	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
5408	cmd.exe
5560	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3540	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5560	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
5532	powershell.exe
5532	powershell.exe
1580	powershell.exe
1580	powershell.exe
1032	powershell.exe
1032	powershell.exe
4560	powershell.exe
4560	powershell.exe
3040	powershell.exe
3040	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4588	Umbral.exe
Token: SeDebugPrivilege	5532	powershell.exe
Token: SeDebugPrivilege	1580	powershell.exe
Token: SeDebugPrivilege	1032	powershell.exe
Token: SeDebugPrivilege	4560	powershell.exe
Token: SeIncreaseQuotaPrivilege	4584	wmic.exe
Token: SeSecurityPrivilege	4584	wmic.exe
Token: SeTakeOwnershipPrivilege	4584	wmic.exe
Token: SeLoadDriverPrivilege	4584	wmic.exe
Token: SeSystemProfilePrivilege	4584	wmic.exe
Token: SeSystemtimePrivilege	4584	wmic.exe
Token: SeProfSingleProcessPrivilege	4584	wmic.exe
Token: SeIncBasePriorityPrivilege	4584	wmic.exe
Token: SeCreatePagefilePrivilege	4584	wmic.exe
Token: SeBackupPrivilege	4584	wmic.exe
Token: SeRestorePrivilege	4584	wmic.exe
Token: SeShutdownPrivilege	4584	wmic.exe
Token: SeDebugPrivilege	4584	wmic.exe
Token: SeSystemEnvironmentPrivilege	4584	wmic.exe
Token: SeRemoteShutdownPrivilege	4584	wmic.exe
Token: SeUndockPrivilege	4584	wmic.exe
Token: SeManageVolumePrivilege	4584	wmic.exe
Token: 33	4584	wmic.exe
Token: 34	4584	wmic.exe
Token: 35	4584	wmic.exe
Token: 36	4584	wmic.exe
Token: SeIncreaseQuotaPrivilege	4584	wmic.exe
Token: SeSecurityPrivilege	4584	wmic.exe
Token: SeTakeOwnershipPrivilege	4584	wmic.exe
Token: SeLoadDriverPrivilege	4584	wmic.exe
Token: SeSystemProfilePrivilege	4584	wmic.exe
Token: SeSystemtimePrivilege	4584	wmic.exe
Token: SeProfSingleProcessPrivilege	4584	wmic.exe
Token: SeIncBasePriorityPrivilege	4584	wmic.exe
Token: SeCreatePagefilePrivilege	4584	wmic.exe
Token: SeBackupPrivilege	4584	wmic.exe
Token: SeRestorePrivilege	4584	wmic.exe
Token: SeShutdownPrivilege	4584	wmic.exe
Token: SeDebugPrivilege	4584	wmic.exe
Token: SeSystemEnvironmentPrivilege	4584	wmic.exe
Token: SeRemoteShutdownPrivilege	4584	wmic.exe
Token: SeUndockPrivilege	4584	wmic.exe
Token: SeManageVolumePrivilege	4584	wmic.exe
Token: 33	4584	wmic.exe
Token: 34	4584	wmic.exe
Token: 35	4584	wmic.exe
Token: 36	4584	wmic.exe
Token: SeIncreaseQuotaPrivilege	3948	wmic.exe
Token: SeSecurityPrivilege	3948	wmic.exe
Token: SeTakeOwnershipPrivilege	3948	wmic.exe
Token: SeLoadDriverPrivilege	3948	wmic.exe
Token: SeSystemProfilePrivilege	3948	wmic.exe
Token: SeSystemtimePrivilege	3948	wmic.exe
Token: SeProfSingleProcessPrivilege	3948	wmic.exe
Token: SeIncBasePriorityPrivilege	3948	wmic.exe
Token: SeCreatePagefilePrivilege	3948	wmic.exe
Token: SeBackupPrivilege	3948	wmic.exe
Token: SeRestorePrivilege	3948	wmic.exe
Token: SeShutdownPrivilege	3948	wmic.exe
Token: SeDebugPrivilege	3948	wmic.exe
Token: SeSystemEnvironmentPrivilege	3948	wmic.exe
Token: SeRemoteShutdownPrivilege	3948	wmic.exe
Token: SeUndockPrivilege	3948	wmic.exe
Token: SeManageVolumePrivilege	3948	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 2360	4588	Umbral.exe	81
PID 4588 wrote to memory of 2360	4588	Umbral.exe	81
PID 4588 wrote to memory of 5532	4588	Umbral.exe	83
PID 4588 wrote to memory of 5532	4588	Umbral.exe	83
PID 4588 wrote to memory of 1580	4588	Umbral.exe	85
PID 4588 wrote to memory of 1580	4588	Umbral.exe	85
PID 4588 wrote to memory of 1032	4588	Umbral.exe	88
PID 4588 wrote to memory of 1032	4588	Umbral.exe	88
PID 4588 wrote to memory of 4560	4588	Umbral.exe	90
PID 4588 wrote to memory of 4560	4588	Umbral.exe	90
PID 4588 wrote to memory of 4584	4588	Umbral.exe	92
PID 4588 wrote to memory of 4584	4588	Umbral.exe	92
PID 4588 wrote to memory of 3948	4588	Umbral.exe	95
PID 4588 wrote to memory of 3948	4588	Umbral.exe	95
PID 4588 wrote to memory of 2996	4588	Umbral.exe	97
PID 4588 wrote to memory of 2996	4588	Umbral.exe	97
PID 4588 wrote to memory of 3040	4588	Umbral.exe	99
PID 4588 wrote to memory of 3040	4588	Umbral.exe	99
PID 4588 wrote to memory of 3540	4588	Umbral.exe	101
PID 4588 wrote to memory of 3540	4588	Umbral.exe	101
PID 4588 wrote to memory of 5408	4588	Umbral.exe	103
PID 4588 wrote to memory of 5408	4588	Umbral.exe	103
PID 5408 wrote to memory of 5560	5408	cmd.exe	105
PID 5408 wrote to memory of 5560	5408	cmd.exe	105

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2360	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:4588
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:2360
- 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:5532
- 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:1580
- 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:1032
- 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:4560
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4584
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3948
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2996
- 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:3040
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3540
- 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:5408
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:5560

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
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
948B

MD5
6490e5c0581c173062323b1c20cfd9ff

SHA1
1652893659f99b780fd9733243637eb7795f5212

SHA256
a552b6d7bebb1714f01a5f3d8b5493e1b369c93ee68c62256dfddcc7f3f4fe79

SHA512
fdb077b40b4371a74cb70ae74d28a4433399e5c4a69fe9a5652409a62c2435d3197da42808d5cb65e9b7ff35bc2e593ad70fa83581c7fd672d631b25f53d3c65

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

Filesize
1KB

MD5
7332074ae2b01262736b6fbd9e100dac

SHA1
22f992165065107cc9417fa4117240d84414a13c

SHA256
baea84fda6c1f13090b8cbd91c920848946f10ce155ef31a1df4cd453ee7e4aa

SHA512
4ae6f0e012c31ac1fc2ff4a8877ce2b4667c45b6e651de798318a39a2b6fd39a6f72dffa8b0b89b7a045a27d724d195656faa25a9fec79b22f37ddebb5d22da2

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

Filesize
1KB

MD5
10254f48b63b60ae6245903153592e48

SHA1
2c300d1c60c50e8896705022bc402c423681f40a

SHA256
b3778ffb5260878714023fd1abc70c4e850b5397c2b32a3975b1ff28bfd96c69

SHA512
6a7e7844c47a07bc8fd0b59267f0d1bac460f672ada93131edd65ca2eb33159de9f6291a1acde745f32991b364e9ceac697f2dfcf1a2696b51a9120dd7af77d4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tuhychsr.zhj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4588-0-0x00007FFF3E833000-0x00007FFF3E835000-memory.dmp

Filesize
8KB

Download
memory/4588-32-0x00000203277F0000-0x0000020327840000-memory.dmp

Filesize
320KB

Download
memory/4588-86-0x00007FFF3E830000-0x00007FFF3F2F2000-memory.dmp

Filesize
10.8MB

Download
memory/4588-82-0x00007FFF3E833000-0x00007FFF3E835000-memory.dmp

Filesize
8KB

Download
memory/4588-2-0x00007FFF3E830000-0x00007FFF3F2F2000-memory.dmp

Filesize
10.8MB

Download
memory/4588-1-0x000002030CF80000-0x000002030CFC0000-memory.dmp

Filesize
256KB

Download
memory/4588-31-0x0000020327770000-0x00000203277E6000-memory.dmp

Filesize
472KB

Download
memory/4588-68-0x0000020327710000-0x0000020327722000-memory.dmp

Filesize
72KB

Download
memory/4588-33-0x0000020327860000-0x000002032787E000-memory.dmp

Filesize
120KB

Download
memory/4588-67-0x00000203275D0000-0x00000203275DA000-memory.dmp

Filesize
40KB

Download
memory/5532-12-0x00000210DA250000-0x00000210DA272000-memory.dmp

Filesize
136KB

Download
memory/5532-13-0x00007FFF3E830000-0x00007FFF3F2F2000-memory.dmp

Filesize
10.8MB

Download
memory/5532-14-0x00007FFF3E830000-0x00007FFF3F2F2000-memory.dmp

Filesize
10.8MB

Download
memory/5532-8-0x00007FFF3E830000-0x00007FFF3F2F2000-memory.dmp

Filesize
10.8MB

Download
memory/5532-18-0x00007FFF3E830000-0x00007FFF3F2F2000-memory.dmp

Filesize
10.8MB

Download
memory/5532-15-0x00007FFF3E830000-0x00007FFF3F2F2000-memory.dmp

Filesize
10.8MB

Download