umbral | daa35ab2edbc13b7f37306b80893dac1af18fb05c0d1b9f48c1703c7aeed1fdb

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
22-02-2025 18:05

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
behavioral1/memory/2492-1-0x0000000000BD0000-0x0000000000C10000-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
2860	powershell.exe
2724	powershell.exe
1400	powershell.exe
2940	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Deletes itself 1 IoCs

pid	Process
2128	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
2128	cmd.exe
2644	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2544	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2644	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2860	powershell.exe
2940	powershell.exe
2724	powershell.exe
3048	powershell.exe
1400	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2492	Umbral.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2940	powershell.exe
Token: SeDebugPrivilege	2724	powershell.exe
Token: SeDebugPrivilege	3048	powershell.exe
Token: SeIncreaseQuotaPrivilege	836	wmic.exe
Token: SeSecurityPrivilege	836	wmic.exe
Token: SeTakeOwnershipPrivilege	836	wmic.exe
Token: SeLoadDriverPrivilege	836	wmic.exe
Token: SeSystemProfilePrivilege	836	wmic.exe
Token: SeSystemtimePrivilege	836	wmic.exe
Token: SeProfSingleProcessPrivilege	836	wmic.exe
Token: SeIncBasePriorityPrivilege	836	wmic.exe
Token: SeCreatePagefilePrivilege	836	wmic.exe
Token: SeBackupPrivilege	836	wmic.exe
Token: SeRestorePrivilege	836	wmic.exe
Token: SeShutdownPrivilege	836	wmic.exe
Token: SeDebugPrivilege	836	wmic.exe
Token: SeSystemEnvironmentPrivilege	836	wmic.exe
Token: SeRemoteShutdownPrivilege	836	wmic.exe
Token: SeUndockPrivilege	836	wmic.exe
Token: SeManageVolumePrivilege	836	wmic.exe
Token: 33	836	wmic.exe
Token: 34	836	wmic.exe
Token: 35	836	wmic.exe
Token: SeIncreaseQuotaPrivilege	836	wmic.exe
Token: SeSecurityPrivilege	836	wmic.exe
Token: SeTakeOwnershipPrivilege	836	wmic.exe
Token: SeLoadDriverPrivilege	836	wmic.exe
Token: SeSystemProfilePrivilege	836	wmic.exe
Token: SeSystemtimePrivilege	836	wmic.exe
Token: SeProfSingleProcessPrivilege	836	wmic.exe
Token: SeIncBasePriorityPrivilege	836	wmic.exe
Token: SeCreatePagefilePrivilege	836	wmic.exe
Token: SeBackupPrivilege	836	wmic.exe
Token: SeRestorePrivilege	836	wmic.exe
Token: SeShutdownPrivilege	836	wmic.exe
Token: SeDebugPrivilege	836	wmic.exe
Token: SeSystemEnvironmentPrivilege	836	wmic.exe
Token: SeRemoteShutdownPrivilege	836	wmic.exe
Token: SeUndockPrivilege	836	wmic.exe
Token: SeManageVolumePrivilege	836	wmic.exe
Token: 33	836	wmic.exe
Token: 34	836	wmic.exe
Token: 35	836	wmic.exe
Token: SeIncreaseQuotaPrivilege	1620	wmic.exe
Token: SeSecurityPrivilege	1620	wmic.exe
Token: SeTakeOwnershipPrivilege	1620	wmic.exe
Token: SeLoadDriverPrivilege	1620	wmic.exe
Token: SeSystemProfilePrivilege	1620	wmic.exe
Token: SeSystemtimePrivilege	1620	wmic.exe
Token: SeProfSingleProcessPrivilege	1620	wmic.exe
Token: SeIncBasePriorityPrivilege	1620	wmic.exe
Token: SeCreatePagefilePrivilege	1620	wmic.exe
Token: SeBackupPrivilege	1620	wmic.exe
Token: SeRestorePrivilege	1620	wmic.exe
Token: SeShutdownPrivilege	1620	wmic.exe
Token: SeDebugPrivilege	1620	wmic.exe
Token: SeSystemEnvironmentPrivilege	1620	wmic.exe
Token: SeRemoteShutdownPrivilege	1620	wmic.exe
Token: SeUndockPrivilege	1620	wmic.exe
Token: SeManageVolumePrivilege	1620	wmic.exe
Token: 33	1620	wmic.exe
Token: 34	1620	wmic.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2492 wrote to memory of 2348	2492	Umbral.exe	31
PID 2492 wrote to memory of 2348	2492	Umbral.exe	31
PID 2492 wrote to memory of 2348	2492	Umbral.exe	31
PID 2492 wrote to memory of 2860	2492	Umbral.exe	33
PID 2492 wrote to memory of 2860	2492	Umbral.exe	33
PID 2492 wrote to memory of 2860	2492	Umbral.exe	33
PID 2492 wrote to memory of 2940	2492	Umbral.exe	35
PID 2492 wrote to memory of 2940	2492	Umbral.exe	35
PID 2492 wrote to memory of 2940	2492	Umbral.exe	35
PID 2492 wrote to memory of 2724	2492	Umbral.exe	37
PID 2492 wrote to memory of 2724	2492	Umbral.exe	37
PID 2492 wrote to memory of 2724	2492	Umbral.exe	37
PID 2492 wrote to memory of 3048	2492	Umbral.exe	39
PID 2492 wrote to memory of 3048	2492	Umbral.exe	39
PID 2492 wrote to memory of 3048	2492	Umbral.exe	39
PID 2492 wrote to memory of 836	2492	Umbral.exe	41
PID 2492 wrote to memory of 836	2492	Umbral.exe	41
PID 2492 wrote to memory of 836	2492	Umbral.exe	41
PID 2492 wrote to memory of 1620	2492	Umbral.exe	44
PID 2492 wrote to memory of 1620	2492	Umbral.exe	44
PID 2492 wrote to memory of 1620	2492	Umbral.exe	44
PID 2492 wrote to memory of 2004	2492	Umbral.exe	46
PID 2492 wrote to memory of 2004	2492	Umbral.exe	46
PID 2492 wrote to memory of 2004	2492	Umbral.exe	46
PID 2492 wrote to memory of 1400	2492	Umbral.exe	48
PID 2492 wrote to memory of 1400	2492	Umbral.exe	48
PID 2492 wrote to memory of 1400	2492	Umbral.exe	48
PID 2492 wrote to memory of 2544	2492	Umbral.exe	50
PID 2492 wrote to memory of 2544	2492	Umbral.exe	50
PID 2492 wrote to memory of 2544	2492	Umbral.exe	50
PID 2492 wrote to memory of 2128	2492	Umbral.exe	52
PID 2492 wrote to memory of 2128	2492	Umbral.exe	52
PID 2492 wrote to memory of 2128	2492	Umbral.exe	52
PID 2128 wrote to memory of 2644	2128	cmd.exe	54
PID 2128 wrote to memory of 2644	2128	cmd.exe	54
PID 2128 wrote to memory of 2644	2128	cmd.exe	54

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2348	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:2492
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:2348
- 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:2860
- 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:2940
- 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:2724
- 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:3048
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:836
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1620
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2004
- 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:1400
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2544
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Umbral.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2128
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2644

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

Filesize
7KB

MD5
4d99426eb38d5ccb73287bc9fe132af7

SHA1
2e03ff61ac0ebb3bd5d3186dabff70c10087d8b9

SHA256
7177d6111a03fad641c4795bb209290044770a2cccc728fe271fe6e1a0594629

SHA512
b28ef546c81ba2e6ffef4e329845b1e2c2d0d379404fecb9fe281ea09d13ac0c85fc87efde6d222357cc0cf8ee3615a78683c8358df43bb328b2e28a3a02a3b8

Download Submit
memory/1400-47-0x000000001B5B0000-0x000000001B892000-memory.dmp

Filesize
2.9MB

Download
memory/2492-0-0x000007FEF5733000-0x000007FEF5734000-memory.dmp

Filesize
4KB

Download
memory/2492-1-0x0000000000BD0000-0x0000000000C10000-memory.dmp

Filesize
256KB

Download
memory/2492-2-0x000007FEF5730000-0x000007FEF611C000-memory.dmp

Filesize
9.9MB

Download
memory/2492-53-0x000007FEF5730000-0x000007FEF611C000-memory.dmp

Filesize
9.9MB

Download
memory/2492-49-0x000007FEF5730000-0x000007FEF611C000-memory.dmp

Filesize
9.9MB

Download
memory/2492-48-0x000007FEF5733000-0x000007FEF5734000-memory.dmp

Filesize
4KB

Download
memory/2860-12-0x000007FEECE20000-0x000007FEED7BD000-memory.dmp

Filesize
9.6MB

Download
memory/2860-13-0x000007FEECE20000-0x000007FEED7BD000-memory.dmp

Filesize
9.6MB

Download
memory/2860-11-0x000007FEECE20000-0x000007FEED7BD000-memory.dmp

Filesize
9.6MB

Download
memory/2860-10-0x000007FEECE20000-0x000007FEED7BD000-memory.dmp

Filesize
9.6MB

Download
memory/2860-9-0x0000000002890000-0x0000000002898000-memory.dmp

Filesize
32KB

Download
memory/2860-8-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2860-7-0x000007FEED0DE000-0x000007FEED0DF000-memory.dmp

Filesize
4KB

Download
memory/2940-19-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/2940-20-0x0000000001F00000-0x0000000001F08000-memory.dmp

Filesize
32KB

Download