umbral | 733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef

Analysis

max time kernel
118s
max time network
118s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
17-01-2025 10:52

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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/2172-1-0x00000000010D0000-0x0000000001110000-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
1032	powershell.exe
2936	powershell.exe
2856	powershell.exe
2876	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
2996	wmic.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe
1032	powershell.exe
2936	powershell.exe
2856	powershell.exe
1916	powershell.exe
2876	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe
Token: SeIncreaseQuotaPrivilege	2360	wmic.exe
Token: SeSecurityPrivilege	2360	wmic.exe
Token: SeTakeOwnershipPrivilege	2360	wmic.exe
Token: SeLoadDriverPrivilege	2360	wmic.exe
Token: SeSystemProfilePrivilege	2360	wmic.exe
Token: SeSystemtimePrivilege	2360	wmic.exe
Token: SeProfSingleProcessPrivilege	2360	wmic.exe
Token: SeIncBasePriorityPrivilege	2360	wmic.exe
Token: SeCreatePagefilePrivilege	2360	wmic.exe
Token: SeBackupPrivilege	2360	wmic.exe
Token: SeRestorePrivilege	2360	wmic.exe
Token: SeShutdownPrivilege	2360	wmic.exe
Token: SeDebugPrivilege	2360	wmic.exe
Token: SeSystemEnvironmentPrivilege	2360	wmic.exe
Token: SeRemoteShutdownPrivilege	2360	wmic.exe
Token: SeUndockPrivilege	2360	wmic.exe
Token: SeManageVolumePrivilege	2360	wmic.exe
Token: 33	2360	wmic.exe
Token: 34	2360	wmic.exe
Token: 35	2360	wmic.exe
Token: SeIncreaseQuotaPrivilege	2360	wmic.exe
Token: SeSecurityPrivilege	2360	wmic.exe
Token: SeTakeOwnershipPrivilege	2360	wmic.exe
Token: SeLoadDriverPrivilege	2360	wmic.exe
Token: SeSystemProfilePrivilege	2360	wmic.exe
Token: SeSystemtimePrivilege	2360	wmic.exe
Token: SeProfSingleProcessPrivilege	2360	wmic.exe
Token: SeIncBasePriorityPrivilege	2360	wmic.exe
Token: SeCreatePagefilePrivilege	2360	wmic.exe
Token: SeBackupPrivilege	2360	wmic.exe
Token: SeRestorePrivilege	2360	wmic.exe
Token: SeShutdownPrivilege	2360	wmic.exe
Token: SeDebugPrivilege	2360	wmic.exe
Token: SeSystemEnvironmentPrivilege	2360	wmic.exe
Token: SeRemoteShutdownPrivilege	2360	wmic.exe
Token: SeUndockPrivilege	2360	wmic.exe
Token: SeManageVolumePrivilege	2360	wmic.exe
Token: 33	2360	wmic.exe
Token: 34	2360	wmic.exe
Token: 35	2360	wmic.exe
Token: SeDebugPrivilege	1032	powershell.exe
Token: SeDebugPrivilege	2936	powershell.exe
Token: SeDebugPrivilege	2856	powershell.exe
Token: SeDebugPrivilege	1916	powershell.exe
Token: SeIncreaseQuotaPrivilege	1728	wmic.exe
Token: SeSecurityPrivilege	1728	wmic.exe
Token: SeTakeOwnershipPrivilege	1728	wmic.exe
Token: SeLoadDriverPrivilege	1728	wmic.exe
Token: SeSystemProfilePrivilege	1728	wmic.exe
Token: SeSystemtimePrivilege	1728	wmic.exe
Token: SeProfSingleProcessPrivilege	1728	wmic.exe
Token: SeIncBasePriorityPrivilege	1728	wmic.exe
Token: SeCreatePagefilePrivilege	1728	wmic.exe
Token: SeBackupPrivilege	1728	wmic.exe
Token: SeRestorePrivilege	1728	wmic.exe
Token: SeShutdownPrivilege	1728	wmic.exe
Token: SeDebugPrivilege	1728	wmic.exe
Token: SeSystemEnvironmentPrivilege	1728	wmic.exe
Token: SeRemoteShutdownPrivilege	1728	wmic.exe
Token: SeUndockPrivilege	1728	wmic.exe
Token: SeManageVolumePrivilege	1728	wmic.exe
Token: 33	1728	wmic.exe
Token: 34	1728	wmic.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2360	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	30
PID 2172 wrote to memory of 2360	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	30
PID 2172 wrote to memory of 2360	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	30
PID 2172 wrote to memory of 1032	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	33
PID 2172 wrote to memory of 1032	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	33
PID 2172 wrote to memory of 1032	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	33
PID 2172 wrote to memory of 2936	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	36
PID 2172 wrote to memory of 2936	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	36
PID 2172 wrote to memory of 2936	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	36
PID 2172 wrote to memory of 2856	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	38
PID 2172 wrote to memory of 2856	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	38
PID 2172 wrote to memory of 2856	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	38
PID 2172 wrote to memory of 1916	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	40
PID 2172 wrote to memory of 1916	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	40
PID 2172 wrote to memory of 1916	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	40
PID 2172 wrote to memory of 1728	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	42
PID 2172 wrote to memory of 1728	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	42
PID 2172 wrote to memory of 1728	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	42
PID 2172 wrote to memory of 820	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	44
PID 2172 wrote to memory of 820	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	44
PID 2172 wrote to memory of 820	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	44
PID 2172 wrote to memory of 2148	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	46
PID 2172 wrote to memory of 2148	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	46
PID 2172 wrote to memory of 2148	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	46
PID 2172 wrote to memory of 2876	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	48
PID 2172 wrote to memory of 2876	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	48
PID 2172 wrote to memory of 2876	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	48
PID 2172 wrote to memory of 2996	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	50
PID 2172 wrote to memory of 2996	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	50
PID 2172 wrote to memory of 2996	2172	733fbf085c90972383ee6b0f9402910222a8f8b20367fccf4ff9f1a9ea51e7ef.exe	50

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:2172
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2360
- 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:1032
- 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:2936
- 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:2856
- 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:1916
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1728
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:820
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2148
- 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:2876
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2996

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
00059d8029375fa83a495b7047b44b73

SHA1
a2a7c07fcd725cbc5467955e47cc9fd518b6a45a

SHA256
f0098ca7992b6d86e361a1345e0d4a369412d34f073273c0b7c80862cbe4b493

SHA512
f00c8765c8bb817ac48ce99145e2e2073c3002e74529123283dab65c5095af692592f834e53525f578f18f115404dcd1096ffb37e931ae160a6d125d41747c38

Download Submit
memory/1032-7-0x000000001B480000-0x000000001B762000-memory.dmp

Filesize
2.9MB

Download
memory/1032-8-0x00000000027A0000-0x00000000027A8000-memory.dmp

Filesize
32KB

Download
memory/2172-0-0x000007FEF5EC3000-0x000007FEF5EC4000-memory.dmp

Filesize
4KB

Download
memory/2172-1-0x00000000010D0000-0x0000000001110000-memory.dmp

Filesize
256KB

Download
memory/2172-2-0x000007FEF5EC0000-0x000007FEF68AC000-memory.dmp

Filesize
9.9MB

Download
memory/2172-42-0x000007FEF5EC0000-0x000007FEF68AC000-memory.dmp

Filesize
9.9MB

Download
memory/2876-38-0x0000000002060000-0x0000000002068000-memory.dmp

Filesize
32KB

Download
memory/2936-14-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/2936-15-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download