umbral | 5b3d67d18e808838c40d63fb02c1f696efad628fdf3d36fab4e03b4127a8bdd9

Analysis

max time kernel
16s
max time network
21s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
06-08-2024 22:11

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General

Target

17508839c779fe50ce47b2c4876ec4f0N.exe
Size

231KB
MD5

17508839c779fe50ce47b2c4876ec4f0
SHA1

bfa4951e0b2dda63a26b8991ae46642ff97afb8c
SHA256

5b3d67d18e808838c40d63fb02c1f696efad628fdf3d36fab4e03b4127a8bdd9
SHA512

577b3404da3c849e2f264e053a8ac8f259fb6d285da3cd7d7b71045bc2d7460255a670d7be3cf5ba9671b257ca43fc2c681949d0ede070f916b43c6a604999a7
SSDEEP

6144:xloZMHrIkd8g+EtXHkv/iD4Sl/t/1+mp1sl3ySXxcb8e1mii:DoZIL+EP8Sl/t/1+mp1sl3ySX+g

Score

10^/10

umbral credential_access execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2152-1-0x0000000000EB0000-0x0000000000EF0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
credential_access stealer

Credentials from Web Browsers
T1555.003

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2860	powershell.exe
2960	powershell.exe
2940	powershell.exe
988	powershell.exe

Reads user/profile data of web browsers 2 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

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
9	discord.com
8	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
828	wmic.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
988	powershell.exe
2860	powershell.exe
2960	powershell.exe
2748	powershell.exe
2940	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2152	17508839c779fe50ce47b2c4876ec4f0N.exe
Token: SeDebugPrivilege	988	powershell.exe
Token: SeDebugPrivilege	2860	powershell.exe
Token: SeDebugPrivilege	2960	powershell.exe
Token: SeDebugPrivilege	2748	powershell.exe
Token: SeIncreaseQuotaPrivilege	2076	wmic.exe
Token: SeSecurityPrivilege	2076	wmic.exe
Token: SeTakeOwnershipPrivilege	2076	wmic.exe
Token: SeLoadDriverPrivilege	2076	wmic.exe
Token: SeSystemProfilePrivilege	2076	wmic.exe
Token: SeSystemtimePrivilege	2076	wmic.exe
Token: SeProfSingleProcessPrivilege	2076	wmic.exe
Token: SeIncBasePriorityPrivilege	2076	wmic.exe
Token: SeCreatePagefilePrivilege	2076	wmic.exe
Token: SeBackupPrivilege	2076	wmic.exe
Token: SeRestorePrivilege	2076	wmic.exe
Token: SeShutdownPrivilege	2076	wmic.exe
Token: SeDebugPrivilege	2076	wmic.exe
Token: SeSystemEnvironmentPrivilege	2076	wmic.exe
Token: SeRemoteShutdownPrivilege	2076	wmic.exe
Token: SeUndockPrivilege	2076	wmic.exe
Token: SeManageVolumePrivilege	2076	wmic.exe
Token: 33	2076	wmic.exe
Token: 34	2076	wmic.exe
Token: 35	2076	wmic.exe
Token: SeIncreaseQuotaPrivilege	2076	wmic.exe
Token: SeSecurityPrivilege	2076	wmic.exe
Token: SeTakeOwnershipPrivilege	2076	wmic.exe
Token: SeLoadDriverPrivilege	2076	wmic.exe
Token: SeSystemProfilePrivilege	2076	wmic.exe
Token: SeSystemtimePrivilege	2076	wmic.exe
Token: SeProfSingleProcessPrivilege	2076	wmic.exe
Token: SeIncBasePriorityPrivilege	2076	wmic.exe
Token: SeCreatePagefilePrivilege	2076	wmic.exe
Token: SeBackupPrivilege	2076	wmic.exe
Token: SeRestorePrivilege	2076	wmic.exe
Token: SeShutdownPrivilege	2076	wmic.exe
Token: SeDebugPrivilege	2076	wmic.exe
Token: SeSystemEnvironmentPrivilege	2076	wmic.exe
Token: SeRemoteShutdownPrivilege	2076	wmic.exe
Token: SeUndockPrivilege	2076	wmic.exe
Token: SeManageVolumePrivilege	2076	wmic.exe
Token: 33	2076	wmic.exe
Token: 34	2076	wmic.exe
Token: 35	2076	wmic.exe
Token: SeIncreaseQuotaPrivilege	1736	wmic.exe
Token: SeSecurityPrivilege	1736	wmic.exe
Token: SeTakeOwnershipPrivilege	1736	wmic.exe
Token: SeLoadDriverPrivilege	1736	wmic.exe
Token: SeSystemProfilePrivilege	1736	wmic.exe
Token: SeSystemtimePrivilege	1736	wmic.exe
Token: SeProfSingleProcessPrivilege	1736	wmic.exe
Token: SeIncBasePriorityPrivilege	1736	wmic.exe
Token: SeCreatePagefilePrivilege	1736	wmic.exe
Token: SeBackupPrivilege	1736	wmic.exe
Token: SeRestorePrivilege	1736	wmic.exe
Token: SeShutdownPrivilege	1736	wmic.exe
Token: SeDebugPrivilege	1736	wmic.exe
Token: SeSystemEnvironmentPrivilege	1736	wmic.exe
Token: SeRemoteShutdownPrivilege	1736	wmic.exe
Token: SeUndockPrivilege	1736	wmic.exe
Token: SeManageVolumePrivilege	1736	wmic.exe
Token: 33	1736	wmic.exe
Token: 34	1736	wmic.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2152 wrote to memory of 988	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	29
PID 2152 wrote to memory of 988	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	29
PID 2152 wrote to memory of 988	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	29
PID 2152 wrote to memory of 2860	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	31
PID 2152 wrote to memory of 2860	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	31
PID 2152 wrote to memory of 2860	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	31
PID 2152 wrote to memory of 2960	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	33
PID 2152 wrote to memory of 2960	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	33
PID 2152 wrote to memory of 2960	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	33
PID 2152 wrote to memory of 2748	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	35
PID 2152 wrote to memory of 2748	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	35
PID 2152 wrote to memory of 2748	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	35
PID 2152 wrote to memory of 2076	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	37
PID 2152 wrote to memory of 2076	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	37
PID 2152 wrote to memory of 2076	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	37
PID 2152 wrote to memory of 1736	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	40
PID 2152 wrote to memory of 1736	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	40
PID 2152 wrote to memory of 1736	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	40
PID 2152 wrote to memory of 2056	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	42
PID 2152 wrote to memory of 2056	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	42
PID 2152 wrote to memory of 2056	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	42
PID 2152 wrote to memory of 2940	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	44
PID 2152 wrote to memory of 2940	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	44
PID 2152 wrote to memory of 2940	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	44
PID 2152 wrote to memory of 828	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	46
PID 2152 wrote to memory of 828	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	46
PID 2152 wrote to memory of 828	2152	17508839c779fe50ce47b2c4876ec4f0N.exe	46

C:\Users\Admin\AppData\Local\Temp\17508839c779fe50ce47b2c4876ec4f0N.exe
"C:\Users\Admin\AppData\Local\Temp\17508839c779fe50ce47b2c4876ec4f0N.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2152
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\17508839c779fe50ce47b2c4876ec4f0N.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:988
- 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:2860
- 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:2960
- 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:2748
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2076
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1736
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2056
- 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:2940
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:828

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
696c5b7dd1117bb27bccaa149fc01a5d

SHA1
60b2e85b8075b068a79a1534ea822a2a67cb0f0e

SHA256
117d81e81440d9d4118371e153d706ea87028fc73a7714a0aa8589a483d46934

SHA512
28eddc603a5f10451e7d58bb8dd04cc2ee27716cb74a97529023a36485b00495ab04231abba8aa729f3c772f3028fd1b9823620a8a2e944041c8d7986de5700a

Download Submit
memory/988-12-0x000007FEEDFB0000-0x000007FEEE94D000-memory.dmp

Filesize
9.6MB

Download
memory/988-13-0x000007FEEDFB0000-0x000007FEEE94D000-memory.dmp

Filesize
9.6MB

Download
memory/988-8-0x000000001B170000-0x000000001B452000-memory.dmp

Filesize
2.9MB

Download
memory/988-9-0x00000000024E0000-0x00000000024E8000-memory.dmp

Filesize
32KB

Download
memory/988-10-0x000007FEEDFB0000-0x000007FEEE94D000-memory.dmp

Filesize
9.6MB

Download
memory/988-11-0x000007FEEDFB0000-0x000007FEEE94D000-memory.dmp

Filesize
9.6MB

Download
memory/988-14-0x000007FEEDFB0000-0x000007FEEE94D000-memory.dmp

Filesize
9.6MB

Download
memory/988-7-0x000007FEEE26E000-0x000007FEEE26F000-memory.dmp

Filesize
4KB

Download
memory/2152-0-0x000007FEF5F03000-0x000007FEF5F04000-memory.dmp

Filesize
4KB

Download
memory/2152-2-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

Filesize
9.9MB

Download
memory/2152-1-0x0000000000EB0000-0x0000000000EF0000-memory.dmp

Filesize
256KB

Download
memory/2152-52-0x000007FEF5F00000-0x000007FEF68EC000-memory.dmp

Filesize
9.9MB

Download
memory/2860-20-0x000000001B160000-0x000000001B442000-memory.dmp

Filesize
2.9MB

Download
memory/2860-21-0x0000000002490000-0x0000000002498000-memory.dmp

Filesize
32KB

Download
memory/2940-48-0x000000001B390000-0x000000001B672000-memory.dmp

Filesize
2.9MB

Download