umbral | 61a29cd27dd6aeac57e0ca467a3f87a04e4a7a122434d5db495cf34c7097f9e8

Analysis

max time kernel
449s
max time network
558s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20250314-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250314-enlocale:en-usos:windows10-ltsc_2021-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
behavioral5/memory/2456-1-0x00000184445C0000-0x0000018444600000-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
3780	powershell.exe
2272	powershell.exe
4924	powershell.exe
2780	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
20	discord.com
21	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
4060	cmd.exe
1604	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2520	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1604	PING.EXE

Suspicious behavior: EnumeratesProcesses 26 IoCs

pid	Process
3780	powershell.exe
3780	powershell.exe
2272	powershell.exe
2272	powershell.exe
4924	powershell.exe
4924	powershell.exe
3784	powershell.exe
3784	powershell.exe
5048	wmic.exe
5048	wmic.exe
5048	wmic.exe
5048	wmic.exe
5108	wmic.exe
5108	wmic.exe
5108	wmic.exe
5108	wmic.exe
1084	wmic.exe
1084	wmic.exe
1084	wmic.exe
1084	wmic.exe
2780	powershell.exe
2780	powershell.exe
2520	wmic.exe
2520	wmic.exe
2520	wmic.exe
2520	wmic.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2456	Umbral.exe
Token: SeDebugPrivilege	3780	powershell.exe
Token: SeIncreaseQuotaPrivilege	3780	powershell.exe
Token: SeSecurityPrivilege	3780	powershell.exe
Token: SeTakeOwnershipPrivilege	3780	powershell.exe
Token: SeLoadDriverPrivilege	3780	powershell.exe
Token: SeSystemProfilePrivilege	3780	powershell.exe
Token: SeSystemtimePrivilege	3780	powershell.exe
Token: SeProfSingleProcessPrivilege	3780	powershell.exe
Token: SeIncBasePriorityPrivilege	3780	powershell.exe
Token: SeCreatePagefilePrivilege	3780	powershell.exe
Token: SeBackupPrivilege	3780	powershell.exe
Token: SeRestorePrivilege	3780	powershell.exe
Token: SeShutdownPrivilege	3780	powershell.exe
Token: SeDebugPrivilege	3780	powershell.exe
Token: SeSystemEnvironmentPrivilege	3780	powershell.exe
Token: SeRemoteShutdownPrivilege	3780	powershell.exe
Token: SeUndockPrivilege	3780	powershell.exe
Token: SeManageVolumePrivilege	3780	powershell.exe
Token: 33	3780	powershell.exe
Token: 34	3780	powershell.exe
Token: 35	3780	powershell.exe
Token: 36	3780	powershell.exe
Token: SeDebugPrivilege	2272	powershell.exe
Token: SeDebugPrivilege	4924	powershell.exe
Token: SeDebugPrivilege	3784	powershell.exe
Token: SeIncreaseQuotaPrivilege	5048	wmic.exe
Token: SeSecurityPrivilege	5048	wmic.exe
Token: SeTakeOwnershipPrivilege	5048	wmic.exe
Token: SeLoadDriverPrivilege	5048	wmic.exe
Token: SeSystemProfilePrivilege	5048	wmic.exe
Token: SeSystemtimePrivilege	5048	wmic.exe
Token: SeProfSingleProcessPrivilege	5048	wmic.exe
Token: SeIncBasePriorityPrivilege	5048	wmic.exe
Token: SeCreatePagefilePrivilege	5048	wmic.exe
Token: SeBackupPrivilege	5048	wmic.exe
Token: SeRestorePrivilege	5048	wmic.exe
Token: SeShutdownPrivilege	5048	wmic.exe
Token: SeDebugPrivilege	5048	wmic.exe
Token: SeSystemEnvironmentPrivilege	5048	wmic.exe
Token: SeRemoteShutdownPrivilege	5048	wmic.exe
Token: SeUndockPrivilege	5048	wmic.exe
Token: SeManageVolumePrivilege	5048	wmic.exe
Token: 33	5048	wmic.exe
Token: 34	5048	wmic.exe
Token: 35	5048	wmic.exe
Token: 36	5048	wmic.exe
Token: SeIncreaseQuotaPrivilege	5048	wmic.exe
Token: SeSecurityPrivilege	5048	wmic.exe
Token: SeTakeOwnershipPrivilege	5048	wmic.exe
Token: SeLoadDriverPrivilege	5048	wmic.exe
Token: SeSystemProfilePrivilege	5048	wmic.exe
Token: SeSystemtimePrivilege	5048	wmic.exe
Token: SeProfSingleProcessPrivilege	5048	wmic.exe
Token: SeIncBasePriorityPrivilege	5048	wmic.exe
Token: SeCreatePagefilePrivilege	5048	wmic.exe
Token: SeBackupPrivilege	5048	wmic.exe
Token: SeRestorePrivilege	5048	wmic.exe
Token: SeShutdownPrivilege	5048	wmic.exe
Token: SeDebugPrivilege	5048	wmic.exe
Token: SeSystemEnvironmentPrivilege	5048	wmic.exe
Token: SeRemoteShutdownPrivilege	5048	wmic.exe
Token: SeUndockPrivilege	5048	wmic.exe
Token: SeManageVolumePrivilege	5048	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2456 wrote to memory of 4276	2456	Umbral.exe	81
PID 2456 wrote to memory of 4276	2456	Umbral.exe	81
PID 2456 wrote to memory of 3780	2456	Umbral.exe	83
PID 2456 wrote to memory of 3780	2456	Umbral.exe	83
PID 2456 wrote to memory of 2272	2456	Umbral.exe	86
PID 2456 wrote to memory of 2272	2456	Umbral.exe	86
PID 2456 wrote to memory of 4924	2456	Umbral.exe	88
PID 2456 wrote to memory of 4924	2456	Umbral.exe	88
PID 2456 wrote to memory of 3784	2456	Umbral.exe	90
PID 2456 wrote to memory of 3784	2456	Umbral.exe	90
PID 2456 wrote to memory of 5048	2456	Umbral.exe	94
PID 2456 wrote to memory of 5048	2456	Umbral.exe	94
PID 2456 wrote to memory of 5108	2456	Umbral.exe	97
PID 2456 wrote to memory of 5108	2456	Umbral.exe	97
PID 2456 wrote to memory of 1084	2456	Umbral.exe	99
PID 2456 wrote to memory of 1084	2456	Umbral.exe	99
PID 2456 wrote to memory of 2780	2456	Umbral.exe	101
PID 2456 wrote to memory of 2780	2456	Umbral.exe	101
PID 2456 wrote to memory of 2520	2456	Umbral.exe	104
PID 2456 wrote to memory of 2520	2456	Umbral.exe	104
PID 2456 wrote to memory of 4060	2456	Umbral.exe	106
PID 2456 wrote to memory of 4060	2456	Umbral.exe	106
PID 4060 wrote to memory of 1604	4060	cmd.exe	108
PID 4060 wrote to memory of 1604	4060	cmd.exe	108

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4276	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:2456
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:4276
- 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:3780
- 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:2272
- 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:4924
- 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:3784
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5048
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:5108
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1084
- 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:2780
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  - Suspicious behavior: EnumeratesProcesses
  PID:2520
- 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:4060
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1604

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
3KB

MD5
3eb3833f769dd890afc295b977eab4b4

SHA1
e857649b037939602c72ad003e5d3698695f436f

SHA256
c485a6e2fd17c342fca60060f47d6a5655a65a412e35e001bb5bf88d96e6e485

SHA512
c24bbc8f278478d43756807b8c584d4e3fb2289db468bc92986a489f74a8da386a667a758360a397e77e018e363be8912ac260072fa3e31117ad0599ac749e72

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

Filesize
1KB

MD5
9981dd2afc0dfb994aa45e65972deff3

SHA1
313cc5f37e0d3d10f7b2d8141782951e514e29af

SHA256
ce0360ae036f5d8581cf7c829b7e1a58f620980fbc1b717d30e485cf2d18a5bf

SHA512
55d127a396335cefb4a743007904ffb58e722d18643913c0ca773b6a511f95d15a3a97265c556c2967f63d7626ba53e3fb9e933f4cb23611d6303545de986d0f

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

Filesize
948B

MD5
5ff6d0b0d8372664c22110073d184231

SHA1
eb15f0c2ffd96aac77d092d26e25190c0308e539

SHA256
a7fc89252caf8e14296f575b2053517c17297ced4234856da474521d767730c8

SHA512
c36265a27de568da78c12e9e192ef7e385242a96206858ad59231b5677e945dce62b1c0ffce1e8e25ba5f3d3e3066a882ad5e378ebda5ff5c8d90000b48221d4

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

Filesize
1KB

MD5
494de073067224860ddfa87f20c1fcd5

SHA1
139fe0d6cc741fdbb891b5e0df6e236fcdfdd7de

SHA256
5b67e54cbb8566db2c781ed86c2e026bef8e1c6e5b454c42872ffba7782a9579

SHA512
2457bb775ad7ce2b62b35f5cddfab1c1e1b16dcba83e38e7b5fb2e205048ffc5d220a29a9b0cfe218800d46fc3888480a0822877cf392aeadcf9287b784a390a

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

Filesize
1KB

MD5
23177316e5ab500ee9f5e650f688b47e

SHA1
d5ba3def42a52e8caa9f92ca7b18d4b08150257f

SHA256
af6d0dd4d2a2721405f6b8fcc6acb9fcc99db3311ca4fe6c413348376ea35554

SHA512
074f1307c7251546abee94b5645af4a5a51e39eeb4acf47bfdeba89bfe7ba7967bd9fdb4ea611197344f06551409bdcca68d3b58713a93b9c93a181b1b420de6

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_u0kxucvr.5qj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2456-59-0x000001845ECA0000-0x000001845ECAA000-memory.dmp

Filesize
40KB

Download
memory/2456-60-0x000001845ECD0000-0x000001845ECE2000-memory.dmp

Filesize
72KB

Download
memory/2456-80-0x00007FFC8F9F0000-0x00007FFC904B2000-memory.dmp

Filesize
10.8MB

Download
memory/2456-75-0x00007FFC8F9F0000-0x00007FFC904B2000-memory.dmp

Filesize
10.8MB

Download
memory/2456-74-0x00007FFC8F9F3000-0x00007FFC8F9F5000-memory.dmp

Filesize
8KB

Download
memory/2456-1-0x00000184445C0000-0x0000018444600000-memory.dmp

Filesize
256KB

Download
memory/2456-0-0x00007FFC8F9F3000-0x00007FFC8F9F5000-memory.dmp

Filesize
8KB

Download
memory/2456-34-0x000001845EDA0000-0x000001845EDF0000-memory.dmp

Filesize
320KB

Download
memory/2456-33-0x000001845ED20000-0x000001845ED96000-memory.dmp

Filesize
472KB

Download
memory/2456-35-0x0000018446350000-0x000001844636E000-memory.dmp

Filesize
120KB

Download
memory/2456-2-0x00007FFC8F9F0000-0x00007FFC904B2000-memory.dmp

Filesize
10.8MB

Download
memory/3780-12-0x0000029E7B930000-0x0000029E7B952000-memory.dmp

Filesize
136KB

Download
memory/3780-13-0x00007FFC8F9F0000-0x00007FFC904B2000-memory.dmp

Filesize
10.8MB

Download
memory/3780-15-0x00007FFC8F9F0000-0x00007FFC904B2000-memory.dmp

Filesize
10.8MB

Download
memory/3780-14-0x00007FFC8F9F0000-0x00007FFC904B2000-memory.dmp

Filesize
10.8MB

Download
memory/3780-20-0x00007FFC8F9F0000-0x00007FFC904B2000-memory.dmp

Filesize
10.8MB

Download
memory/3780-17-0x00007FFC8F9F0000-0x00007FFC904B2000-memory.dmp

Filesize
10.8MB

Download
memory/3780-16-0x00007FFC8F9F0000-0x00007FFC904B2000-memory.dmp

Filesize
10.8MB

Download