umbral | 01fb336066beb7d69b8a498acd0c01a0f7a49fb1f3ddfe9e28d2cc628132110c

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-01-2025 06:57

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General

Target

SU.exe
Size

229KB
MD5

05c943e8ae5c31ffe2dfd3eff82aa5c1
SHA1

6687440528a26ae933709e79ff486cb5727bb881
SHA256

01fb336066beb7d69b8a498acd0c01a0f7a49fb1f3ddfe9e28d2cc628132110c
SHA512

79e937aae114229690b11e43ced2a61886b40f57b91e04f24a6b3f6db0f2e2008dac1b44bba274fb75befcbb1bc109b41ac60ac3820c1ff834c68dac3756943b
SSDEEP

6144:9loZMNrIkd8g+EtXHkv/iD4N1yBR/k4XxG/BcoNS3b8e1mEXi:foZmL+EP8N1yBR/k4XxG/BcoNkfy

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1632-1-0x00000000003F0000-0x0000000000430000-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
796	powershell.exe
2740	powershell.exe
1964	powershell.exe
2984	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
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

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1148	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
796	powershell.exe
2740	powershell.exe
1964	powershell.exe
2004	powershell.exe
2984	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1632	SU.exe
Token: SeDebugPrivilege	796	powershell.exe
Token: SeDebugPrivilege	2740	powershell.exe
Token: SeDebugPrivilege	1964	powershell.exe
Token: SeDebugPrivilege	2004	powershell.exe
Token: SeIncreaseQuotaPrivilege	352	wmic.exe
Token: SeSecurityPrivilege	352	wmic.exe
Token: SeTakeOwnershipPrivilege	352	wmic.exe
Token: SeLoadDriverPrivilege	352	wmic.exe
Token: SeSystemProfilePrivilege	352	wmic.exe
Token: SeSystemtimePrivilege	352	wmic.exe
Token: SeProfSingleProcessPrivilege	352	wmic.exe
Token: SeIncBasePriorityPrivilege	352	wmic.exe
Token: SeCreatePagefilePrivilege	352	wmic.exe
Token: SeBackupPrivilege	352	wmic.exe
Token: SeRestorePrivilege	352	wmic.exe
Token: SeShutdownPrivilege	352	wmic.exe
Token: SeDebugPrivilege	352	wmic.exe
Token: SeSystemEnvironmentPrivilege	352	wmic.exe
Token: SeRemoteShutdownPrivilege	352	wmic.exe
Token: SeUndockPrivilege	352	wmic.exe
Token: SeManageVolumePrivilege	352	wmic.exe
Token: 33	352	wmic.exe
Token: 34	352	wmic.exe
Token: 35	352	wmic.exe
Token: SeIncreaseQuotaPrivilege	352	wmic.exe
Token: SeSecurityPrivilege	352	wmic.exe
Token: SeTakeOwnershipPrivilege	352	wmic.exe
Token: SeLoadDriverPrivilege	352	wmic.exe
Token: SeSystemProfilePrivilege	352	wmic.exe
Token: SeSystemtimePrivilege	352	wmic.exe
Token: SeProfSingleProcessPrivilege	352	wmic.exe
Token: SeIncBasePriorityPrivilege	352	wmic.exe
Token: SeCreatePagefilePrivilege	352	wmic.exe
Token: SeBackupPrivilege	352	wmic.exe
Token: SeRestorePrivilege	352	wmic.exe
Token: SeShutdownPrivilege	352	wmic.exe
Token: SeDebugPrivilege	352	wmic.exe
Token: SeSystemEnvironmentPrivilege	352	wmic.exe
Token: SeRemoteShutdownPrivilege	352	wmic.exe
Token: SeUndockPrivilege	352	wmic.exe
Token: SeManageVolumePrivilege	352	wmic.exe
Token: 33	352	wmic.exe
Token: 34	352	wmic.exe
Token: 35	352	wmic.exe
Token: SeIncreaseQuotaPrivilege	1700	wmic.exe
Token: SeSecurityPrivilege	1700	wmic.exe
Token: SeTakeOwnershipPrivilege	1700	wmic.exe
Token: SeLoadDriverPrivilege	1700	wmic.exe
Token: SeSystemProfilePrivilege	1700	wmic.exe
Token: SeSystemtimePrivilege	1700	wmic.exe
Token: SeProfSingleProcessPrivilege	1700	wmic.exe
Token: SeIncBasePriorityPrivilege	1700	wmic.exe
Token: SeCreatePagefilePrivilege	1700	wmic.exe
Token: SeBackupPrivilege	1700	wmic.exe
Token: SeRestorePrivilege	1700	wmic.exe
Token: SeShutdownPrivilege	1700	wmic.exe
Token: SeDebugPrivilege	1700	wmic.exe
Token: SeSystemEnvironmentPrivilege	1700	wmic.exe
Token: SeRemoteShutdownPrivilege	1700	wmic.exe
Token: SeUndockPrivilege	1700	wmic.exe
Token: SeManageVolumePrivilege	1700	wmic.exe
Token: 33	1700	wmic.exe
Token: 34	1700	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1632 wrote to memory of 796	1632	SU.exe	30
PID 1632 wrote to memory of 796	1632	SU.exe	30
PID 1632 wrote to memory of 796	1632	SU.exe	30
PID 1632 wrote to memory of 2740	1632	SU.exe	33
PID 1632 wrote to memory of 2740	1632	SU.exe	33
PID 1632 wrote to memory of 2740	1632	SU.exe	33
PID 1632 wrote to memory of 1964	1632	SU.exe	35
PID 1632 wrote to memory of 1964	1632	SU.exe	35
PID 1632 wrote to memory of 1964	1632	SU.exe	35
PID 1632 wrote to memory of 2004	1632	SU.exe	37
PID 1632 wrote to memory of 2004	1632	SU.exe	37
PID 1632 wrote to memory of 2004	1632	SU.exe	37
PID 1632 wrote to memory of 352	1632	SU.exe	39
PID 1632 wrote to memory of 352	1632	SU.exe	39
PID 1632 wrote to memory of 352	1632	SU.exe	39
PID 1632 wrote to memory of 1700	1632	SU.exe	42
PID 1632 wrote to memory of 1700	1632	SU.exe	42
PID 1632 wrote to memory of 1700	1632	SU.exe	42
PID 1632 wrote to memory of 2672	1632	SU.exe	44
PID 1632 wrote to memory of 2672	1632	SU.exe	44
PID 1632 wrote to memory of 2672	1632	SU.exe	44
PID 1632 wrote to memory of 2984	1632	SU.exe	46
PID 1632 wrote to memory of 2984	1632	SU.exe	46
PID 1632 wrote to memory of 2984	1632	SU.exe	46
PID 1632 wrote to memory of 1148	1632	SU.exe	48
PID 1632 wrote to memory of 1148	1632	SU.exe	48
PID 1632 wrote to memory of 1148	1632	SU.exe	48

C:\Users\Admin\AppData\Local\Temp\SU.exe
"C:\Users\Admin\AppData\Local\Temp\SU.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\SU.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:796
- 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:2740
- 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:1964
- 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:2004
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:352
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1700
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2672
- 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:2984
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1148

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
d5bb439a1948a75089f5ffd64eaa3e5e

SHA1
f70b6083d22ae09f5621b2e04f97c4984f283d68

SHA256
f6855ed6064f237abb08ef9955ea3116b7bc8801884513d28cdd1432ae319532

SHA512
9169b92d27199a8eb1737acff81f6e9cf6bf5c4ba7ab56fa6d7f86bde152702c93b40458db64629fb4d32b28986b3b56a06f432d544ef48ddd8e132fdf9ec729

Download Submit
memory/796-8-0x000000001B7F0000-0x000000001BAD2000-memory.dmp

Filesize
2.9MB

Download
memory/796-15-0x000007FEEE9D0000-0x000007FEEF36D000-memory.dmp

Filesize
9.6MB

Download
memory/796-7-0x000007FEEEC8E000-0x000007FEEEC8F000-memory.dmp

Filesize
4KB

Download
memory/796-11-0x000007FEEE9D0000-0x000007FEEF36D000-memory.dmp

Filesize
9.6MB

Download
memory/796-10-0x000007FEEE9D0000-0x000007FEEF36D000-memory.dmp

Filesize
9.6MB

Download
memory/796-13-0x000007FEEE9D0000-0x000007FEEF36D000-memory.dmp

Filesize
9.6MB

Download
memory/796-12-0x000007FEEE9D0000-0x000007FEEF36D000-memory.dmp

Filesize
9.6MB

Download
memory/796-9-0x0000000001FF0000-0x0000000001FF8000-memory.dmp

Filesize
32KB

Download
memory/796-14-0x000007FEEE9D0000-0x000007FEEF36D000-memory.dmp

Filesize
9.6MB

Download
memory/1632-0-0x000007FEF6533000-0x000007FEF6534000-memory.dmp

Filesize
4KB

Download
memory/1632-2-0x000007FEF6530000-0x000007FEF6F1C000-memory.dmp

Filesize
9.9MB

Download
memory/1632-1-0x00000000003F0000-0x0000000000430000-memory.dmp

Filesize
256KB

Download
memory/1632-46-0x000007FEF6533000-0x000007FEF6534000-memory.dmp

Filesize
4KB

Download
memory/1632-47-0x000007FEF6530000-0x000007FEF6F1C000-memory.dmp

Filesize
9.9MB

Download
memory/1632-51-0x000007FEF6530000-0x000007FEF6F1C000-memory.dmp

Filesize
9.9MB

Download
memory/2740-21-0x000000001B4B0000-0x000000001B792000-memory.dmp

Filesize
2.9MB

Download
memory/2740-22-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

Filesize
32KB

Download