umbral | 2ce5ab90e160d795bee80f40ab817b2beb35fb43845e61658942eda4ca0b376c

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
08-12-2024 15:02

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Umbral.exe
Size

229KB
MD5

0cc2a414bb58a3f9e345ea56350ff9a4
SHA1

09ec47af8c94ac3a94ad0e29df8a1405a6bc9e01
SHA256

2ce5ab90e160d795bee80f40ab817b2beb35fb43845e61658942eda4ca0b376c
SHA512

007ea98156043b18be5a612741ca9d2a0494dd5a5f7cea06a27185ac0de3950dd295d7e5066ea4313e3c517159b96450397e9645798fb2a2abd92ab8c21adccb
SSDEEP

6144:tloZM0rIkd8g+EtXHkv/iD4eKbNoOJBiVHaIJtM9Xb8e1mgri:voZDL+EP8eKbNoOJBiVHaIJtMZ3m

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1884-1-0x0000000000EE0000-0x0000000000F20000-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
2376	powershell.exe
1512	powershell.exe
1644	powershell.exe
276	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
10	discord.com
11	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
7	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
960	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1884	Umbral.exe
2376	powershell.exe
1512	powershell.exe
1644	powershell.exe
1892	powershell.exe
276	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1884	Umbral.exe
Token: SeIncreaseQuotaPrivilege	2952	wmic.exe
Token: SeSecurityPrivilege	2952	wmic.exe
Token: SeTakeOwnershipPrivilege	2952	wmic.exe
Token: SeLoadDriverPrivilege	2952	wmic.exe
Token: SeSystemProfilePrivilege	2952	wmic.exe
Token: SeSystemtimePrivilege	2952	wmic.exe
Token: SeProfSingleProcessPrivilege	2952	wmic.exe
Token: SeIncBasePriorityPrivilege	2952	wmic.exe
Token: SeCreatePagefilePrivilege	2952	wmic.exe
Token: SeBackupPrivilege	2952	wmic.exe
Token: SeRestorePrivilege	2952	wmic.exe
Token: SeShutdownPrivilege	2952	wmic.exe
Token: SeDebugPrivilege	2952	wmic.exe
Token: SeSystemEnvironmentPrivilege	2952	wmic.exe
Token: SeRemoteShutdownPrivilege	2952	wmic.exe
Token: SeUndockPrivilege	2952	wmic.exe
Token: SeManageVolumePrivilege	2952	wmic.exe
Token: 33	2952	wmic.exe
Token: 34	2952	wmic.exe
Token: 35	2952	wmic.exe
Token: SeIncreaseQuotaPrivilege	2952	wmic.exe
Token: SeSecurityPrivilege	2952	wmic.exe
Token: SeTakeOwnershipPrivilege	2952	wmic.exe
Token: SeLoadDriverPrivilege	2952	wmic.exe
Token: SeSystemProfilePrivilege	2952	wmic.exe
Token: SeSystemtimePrivilege	2952	wmic.exe
Token: SeProfSingleProcessPrivilege	2952	wmic.exe
Token: SeIncBasePriorityPrivilege	2952	wmic.exe
Token: SeCreatePagefilePrivilege	2952	wmic.exe
Token: SeBackupPrivilege	2952	wmic.exe
Token: SeRestorePrivilege	2952	wmic.exe
Token: SeShutdownPrivilege	2952	wmic.exe
Token: SeDebugPrivilege	2952	wmic.exe
Token: SeSystemEnvironmentPrivilege	2952	wmic.exe
Token: SeRemoteShutdownPrivilege	2952	wmic.exe
Token: SeUndockPrivilege	2952	wmic.exe
Token: SeManageVolumePrivilege	2952	wmic.exe
Token: 33	2952	wmic.exe
Token: 34	2952	wmic.exe
Token: 35	2952	wmic.exe
Token: SeDebugPrivilege	2376	powershell.exe
Token: SeDebugPrivilege	1512	powershell.exe
Token: SeDebugPrivilege	1644	powershell.exe
Token: SeDebugPrivilege	1892	powershell.exe
Token: SeIncreaseQuotaPrivilege	3008	wmic.exe
Token: SeSecurityPrivilege	3008	wmic.exe
Token: SeTakeOwnershipPrivilege	3008	wmic.exe
Token: SeLoadDriverPrivilege	3008	wmic.exe
Token: SeSystemProfilePrivilege	3008	wmic.exe
Token: SeSystemtimePrivilege	3008	wmic.exe
Token: SeProfSingleProcessPrivilege	3008	wmic.exe
Token: SeIncBasePriorityPrivilege	3008	wmic.exe
Token: SeCreatePagefilePrivilege	3008	wmic.exe
Token: SeBackupPrivilege	3008	wmic.exe
Token: SeRestorePrivilege	3008	wmic.exe
Token: SeShutdownPrivilege	3008	wmic.exe
Token: SeDebugPrivilege	3008	wmic.exe
Token: SeSystemEnvironmentPrivilege	3008	wmic.exe
Token: SeRemoteShutdownPrivilege	3008	wmic.exe
Token: SeUndockPrivilege	3008	wmic.exe
Token: SeManageVolumePrivilege	3008	wmic.exe
Token: 33	3008	wmic.exe
Token: 34	3008	wmic.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 2952	1884	Umbral.exe	31
PID 1884 wrote to memory of 2952	1884	Umbral.exe	31
PID 1884 wrote to memory of 2952	1884	Umbral.exe	31
PID 1884 wrote to memory of 2376	1884	Umbral.exe	34
PID 1884 wrote to memory of 2376	1884	Umbral.exe	34
PID 1884 wrote to memory of 2376	1884	Umbral.exe	34
PID 1884 wrote to memory of 1512	1884	Umbral.exe	36
PID 1884 wrote to memory of 1512	1884	Umbral.exe	36
PID 1884 wrote to memory of 1512	1884	Umbral.exe	36
PID 1884 wrote to memory of 1644	1884	Umbral.exe	38
PID 1884 wrote to memory of 1644	1884	Umbral.exe	38
PID 1884 wrote to memory of 1644	1884	Umbral.exe	38
PID 1884 wrote to memory of 1892	1884	Umbral.exe	40
PID 1884 wrote to memory of 1892	1884	Umbral.exe	40
PID 1884 wrote to memory of 1892	1884	Umbral.exe	40
PID 1884 wrote to memory of 3008	1884	Umbral.exe	42
PID 1884 wrote to memory of 3008	1884	Umbral.exe	42
PID 1884 wrote to memory of 3008	1884	Umbral.exe	42
PID 1884 wrote to memory of 1752	1884	Umbral.exe	44
PID 1884 wrote to memory of 1752	1884	Umbral.exe	44
PID 1884 wrote to memory of 1752	1884	Umbral.exe	44
PID 1884 wrote to memory of 2728	1884	Umbral.exe	46
PID 1884 wrote to memory of 2728	1884	Umbral.exe	46
PID 1884 wrote to memory of 2728	1884	Umbral.exe	46
PID 1884 wrote to memory of 276	1884	Umbral.exe	48
PID 1884 wrote to memory of 276	1884	Umbral.exe	48
PID 1884 wrote to memory of 276	1884	Umbral.exe	48
PID 1884 wrote to memory of 960	1884	Umbral.exe	50
PID 1884 wrote to memory of 960	1884	Umbral.exe	50
PID 1884 wrote to memory of 960	1884	Umbral.exe	50

C:\Users\Admin\AppData\Local\Temp\Umbral.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1884
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2952
- 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:2376
- 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:1512
- 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:1644
- 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:1892
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3008
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1752
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2728
- 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:276
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:960

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

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

System Information Discovery

T1082

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
bdc352308b30d35923aa337c5d2c9943

SHA1
d59167ea202caf4b04cfe9a332d85b700df17e9a

SHA256
9d420cac2dcb521bea88212eff03ade6fa063ba9b8dfe8eba004ae194773f853

SHA512
a272d4802b79bdf662631022dc7bd8a889f39af372dd65dd65bd4034094a766da79af53866821c71f75a7ae9595e8a0df853a869434ce9899813c420b824f56b

Download Submit
memory/276-44-0x0000000001D90000-0x0000000001D98000-memory.dmp

Filesize
32KB

Download
memory/1512-17-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/1512-16-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/1884-3-0x000007FEF5B23000-0x000007FEF5B24000-memory.dmp

Filesize
4KB

Download
memory/1884-4-0x000007FEF5B20000-0x000007FEF650C000-memory.dmp

Filesize
9.9MB

Download
memory/1884-0-0x000007FEF5B23000-0x000007FEF5B24000-memory.dmp

Filesize
4KB

Download
memory/1884-2-0x000007FEF5B20000-0x000007FEF650C000-memory.dmp

Filesize
9.9MB

Download
memory/1884-1-0x0000000000EE0000-0x0000000000F20000-memory.dmp

Filesize
256KB

Download
memory/1884-48-0x000007FEF5B20000-0x000007FEF650C000-memory.dmp

Filesize
9.9MB

Download
memory/2376-10-0x0000000002910000-0x0000000002918000-memory.dmp

Filesize
32KB

Download
memory/2376-9-0x000000001B410000-0x000000001B6F2000-memory.dmp

Filesize
2.9MB

Download