umbral | dccdba44701fbf3031e6a2ad016cb702c7941ca2abbc754ba60b1d0ca5396e82

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11/02/2025, 13:34

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General

Target

Umbral1.exe
Size

221KB
MD5

fe655b03add462121d67240f461e8787
SHA1

73907706fdf7922ba19a27f4b1fd315f7c107efe
SHA256

dccdba44701fbf3031e6a2ad016cb702c7941ca2abbc754ba60b1d0ca5396e82
SHA512

c00653793e37dee5b4bdc5cbd0194038928e03dfb8a3e8910c54d8c20133e163c59c36fb6989c180c3fb9e39e9a37d3544292f55fd92367749e7fa143c4c8b7b
SSDEEP

6144:KloZMUrIkd8g+EtXHkv/iD439sJNlK8euYi:0oZrL+EP8Na

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1840-1-0x0000000000A00000-0x0000000000A3E000-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
2856	powershell.exe
2580	powershell.exe
1712	powershell.exe
1032	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	Umbral1.exe

Deletes itself 1 IoCs

pid	Process
2152	cmd.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
8	discord.com
9	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
2152	cmd.exe
2068	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3032	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2068	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2856	powershell.exe
2580	powershell.exe
1712	powershell.exe
1744	powershell.exe
1032	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1840	Umbral1.exe
Token: SeDebugPrivilege	2856	powershell.exe
Token: SeDebugPrivilege	2580	powershell.exe
Token: SeDebugPrivilege	1712	powershell.exe
Token: SeDebugPrivilege	1744	powershell.exe
Token: SeIncreaseQuotaPrivilege	2788	wmic.exe
Token: SeSecurityPrivilege	2788	wmic.exe
Token: SeTakeOwnershipPrivilege	2788	wmic.exe
Token: SeLoadDriverPrivilege	2788	wmic.exe
Token: SeSystemProfilePrivilege	2788	wmic.exe
Token: SeSystemtimePrivilege	2788	wmic.exe
Token: SeProfSingleProcessPrivilege	2788	wmic.exe
Token: SeIncBasePriorityPrivilege	2788	wmic.exe
Token: SeCreatePagefilePrivilege	2788	wmic.exe
Token: SeBackupPrivilege	2788	wmic.exe
Token: SeRestorePrivilege	2788	wmic.exe
Token: SeShutdownPrivilege	2788	wmic.exe
Token: SeDebugPrivilege	2788	wmic.exe
Token: SeSystemEnvironmentPrivilege	2788	wmic.exe
Token: SeRemoteShutdownPrivilege	2788	wmic.exe
Token: SeUndockPrivilege	2788	wmic.exe
Token: SeManageVolumePrivilege	2788	wmic.exe
Token: 33	2788	wmic.exe
Token: 34	2788	wmic.exe
Token: 35	2788	wmic.exe
Token: SeIncreaseQuotaPrivilege	2788	wmic.exe
Token: SeSecurityPrivilege	2788	wmic.exe
Token: SeTakeOwnershipPrivilege	2788	wmic.exe
Token: SeLoadDriverPrivilege	2788	wmic.exe
Token: SeSystemProfilePrivilege	2788	wmic.exe
Token: SeSystemtimePrivilege	2788	wmic.exe
Token: SeProfSingleProcessPrivilege	2788	wmic.exe
Token: SeIncBasePriorityPrivilege	2788	wmic.exe
Token: SeCreatePagefilePrivilege	2788	wmic.exe
Token: SeBackupPrivilege	2788	wmic.exe
Token: SeRestorePrivilege	2788	wmic.exe
Token: SeShutdownPrivilege	2788	wmic.exe
Token: SeDebugPrivilege	2788	wmic.exe
Token: SeSystemEnvironmentPrivilege	2788	wmic.exe
Token: SeRemoteShutdownPrivilege	2788	wmic.exe
Token: SeUndockPrivilege	2788	wmic.exe
Token: SeManageVolumePrivilege	2788	wmic.exe
Token: 33	2788	wmic.exe
Token: 34	2788	wmic.exe
Token: 35	2788	wmic.exe
Token: SeIncreaseQuotaPrivilege	668	wmic.exe
Token: SeSecurityPrivilege	668	wmic.exe
Token: SeTakeOwnershipPrivilege	668	wmic.exe
Token: SeLoadDriverPrivilege	668	wmic.exe
Token: SeSystemProfilePrivilege	668	wmic.exe
Token: SeSystemtimePrivilege	668	wmic.exe
Token: SeProfSingleProcessPrivilege	668	wmic.exe
Token: SeIncBasePriorityPrivilege	668	wmic.exe
Token: SeCreatePagefilePrivilege	668	wmic.exe
Token: SeBackupPrivilege	668	wmic.exe
Token: SeRestorePrivilege	668	wmic.exe
Token: SeShutdownPrivilege	668	wmic.exe
Token: SeDebugPrivilege	668	wmic.exe
Token: SeSystemEnvironmentPrivilege	668	wmic.exe
Token: SeRemoteShutdownPrivilege	668	wmic.exe
Token: SeUndockPrivilege	668	wmic.exe
Token: SeManageVolumePrivilege	668	wmic.exe
Token: 33	668	wmic.exe
Token: 34	668	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1840 wrote to memory of 3020	1840	Umbral1.exe	31
PID 1840 wrote to memory of 3020	1840	Umbral1.exe	31
PID 1840 wrote to memory of 3020	1840	Umbral1.exe	31
PID 1840 wrote to memory of 2856	1840	Umbral1.exe	33
PID 1840 wrote to memory of 2856	1840	Umbral1.exe	33
PID 1840 wrote to memory of 2856	1840	Umbral1.exe	33
PID 1840 wrote to memory of 2580	1840	Umbral1.exe	35
PID 1840 wrote to memory of 2580	1840	Umbral1.exe	35
PID 1840 wrote to memory of 2580	1840	Umbral1.exe	35
PID 1840 wrote to memory of 1712	1840	Umbral1.exe	37
PID 1840 wrote to memory of 1712	1840	Umbral1.exe	37
PID 1840 wrote to memory of 1712	1840	Umbral1.exe	37
PID 1840 wrote to memory of 1744	1840	Umbral1.exe	39
PID 1840 wrote to memory of 1744	1840	Umbral1.exe	39
PID 1840 wrote to memory of 1744	1840	Umbral1.exe	39
PID 1840 wrote to memory of 2788	1840	Umbral1.exe	41
PID 1840 wrote to memory of 2788	1840	Umbral1.exe	41
PID 1840 wrote to memory of 2788	1840	Umbral1.exe	41
PID 1840 wrote to memory of 668	1840	Umbral1.exe	44
PID 1840 wrote to memory of 668	1840	Umbral1.exe	44
PID 1840 wrote to memory of 668	1840	Umbral1.exe	44
PID 1840 wrote to memory of 2036	1840	Umbral1.exe	46
PID 1840 wrote to memory of 2036	1840	Umbral1.exe	46
PID 1840 wrote to memory of 2036	1840	Umbral1.exe	46
PID 1840 wrote to memory of 1032	1840	Umbral1.exe	48
PID 1840 wrote to memory of 1032	1840	Umbral1.exe	48
PID 1840 wrote to memory of 1032	1840	Umbral1.exe	48
PID 1840 wrote to memory of 3032	1840	Umbral1.exe	50
PID 1840 wrote to memory of 3032	1840	Umbral1.exe	50
PID 1840 wrote to memory of 3032	1840	Umbral1.exe	50
PID 1840 wrote to memory of 2152	1840	Umbral1.exe	52
PID 1840 wrote to memory of 2152	1840	Umbral1.exe	52
PID 1840 wrote to memory of 2152	1840	Umbral1.exe	52
PID 2152 wrote to memory of 2068	2152	cmd.exe	54
PID 2152 wrote to memory of 2068	2152	cmd.exe	54
PID 2152 wrote to memory of 2068	2152	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
3020	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Umbral1.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral1.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1840
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral1.exe"
  2⤵
  - Views/modifies file attributes
  PID:3020
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Umbral1.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2856
- 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:2580
- 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:1712
- 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:1744
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2788
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:668
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2036
- 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:1032
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3032
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Umbral1.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2152
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2068

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
73ab1933589ad0eaf6cb3524ace09dd3

SHA1
99032347a8e3ffe1903eeb7f34a8750639b5882f

SHA256
c5012a205d58f082ce759c1ba6f66ac5518ca9da2605eeeced2552739af027ab

SHA512
5794f028f50d09ee336d11d313195cfc629b750596d3ec14777c294ebd25e6fa55e9a1a5ba192a286227a8588136e7f093a3f06d0691b0de2f99e9e55c5442f2

Download Submit
memory/1840-1-0x0000000000A00000-0x0000000000A3E000-memory.dmp

Filesize
248KB

Download
memory/1840-2-0x000007FEF5CC0000-0x000007FEF66AC000-memory.dmp

Filesize
9.9MB

Download
memory/1840-52-0x000007FEF5CC0000-0x000007FEF66AC000-memory.dmp

Filesize
9.9MB

Download
memory/1840-0-0x000007FEF5CC3000-0x000007FEF5CC4000-memory.dmp

Filesize
4KB

Download
memory/1840-34-0x000007FEF5CC3000-0x000007FEF5CC4000-memory.dmp

Filesize
4KB

Download
memory/1840-35-0x000007FEF5CC0000-0x000007FEF66AC000-memory.dmp

Filesize
9.9MB

Download
memory/2580-20-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2580-19-0x000000001B6C0000-0x000000001B9A2000-memory.dmp

Filesize
2.9MB

Download
memory/2856-8-0x000007FEED530000-0x000007FEEDECD000-memory.dmp

Filesize
9.6MB

Download
memory/2856-13-0x000007FEED530000-0x000007FEEDECD000-memory.dmp

Filesize
9.6MB

Download
memory/2856-12-0x000007FEED530000-0x000007FEEDECD000-memory.dmp

Filesize
9.6MB

Download
memory/2856-11-0x000007FEED530000-0x000007FEEDECD000-memory.dmp

Filesize
9.6MB

Download
memory/2856-10-0x0000000002960000-0x0000000002968000-memory.dmp

Filesize
32KB

Download
memory/2856-9-0x000000001B5D0000-0x000000001B8B2000-memory.dmp

Filesize
2.9MB

Download
memory/2856-7-0x000007FEED7EE000-0x000007FEED7EF000-memory.dmp

Filesize
4KB

Download