umbral | 26ab66ebbaebd820ba8be4da58fe5d2403f29c254e6946354e128b4379b09ef6

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
09/01/2025, 19:59

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General

Target

void.exe
Size

1.2MB
MD5

b95ebcf2ae71c29e2fab45e455454f66
SHA1

6d2b76cca8a9f9b83652b570fdc56a2b39c1a3da
SHA256

26ab66ebbaebd820ba8be4da58fe5d2403f29c254e6946354e128b4379b09ef6
SHA512

975bb6f3c364a5a77839d26ebb0b954d057b42a3e7dcc02254873025142b791c1522e754b916d6440840449f8b4cc6c8ecc63b3b2d5067f84342ffaa4f8f5550
SSDEEP

24576:qU+9XNrenyktDLdYNtcdvQNC9wHAP5c1gfZRI8seEW0b3cENImHHmSv:U5OVeyff+v

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Extracted

Family

umbral

https://discord.com/api/webhooks/1326189868132470804/0PHWSyQSIa4FHLD7ongsl606LGHkxDinslZqvpEbR2nHgiv9NT-W3uGflUZv7ShrMLLF

Signatures

Detect Umbral payload 3 IoCs

resource	yara_rule
behavioral1/files/0x000800000001919c-12.dat	family_umbral
behavioral1/memory/2100-10-0x0000000000400000-0x0000000000536000-memory.dmp	family_umbral
behavioral1/memory/2384-13-0x0000000001330000-0x0000000001370000-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

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2596	powershell.exe
1732	powershell.exe
2476	powershell.exe
2192	powershell.exe

Drops file in Drivers directory 1 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
328	triggerbot.exe
2384	Source code.exe

Loads dropped DLL 2 IoCs

pid	Process
2100	void.exe
2100	void.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

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	triggerbot.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	void.exe

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
1704	cmd.exe
844	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
2528	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
844	PING.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2384	Source code.exe
2192	powershell.exe
2596	powershell.exe
1732	powershell.exe
2660	powershell.exe
2476	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2384	Source code.exe
Token: SeIncreaseQuotaPrivilege	2812	wmic.exe
Token: SeSecurityPrivilege	2812	wmic.exe
Token: SeTakeOwnershipPrivilege	2812	wmic.exe
Token: SeLoadDriverPrivilege	2812	wmic.exe
Token: SeSystemProfilePrivilege	2812	wmic.exe
Token: SeSystemtimePrivilege	2812	wmic.exe
Token: SeProfSingleProcessPrivilege	2812	wmic.exe
Token: SeIncBasePriorityPrivilege	2812	wmic.exe
Token: SeCreatePagefilePrivilege	2812	wmic.exe
Token: SeBackupPrivilege	2812	wmic.exe
Token: SeRestorePrivilege	2812	wmic.exe
Token: SeShutdownPrivilege	2812	wmic.exe
Token: SeDebugPrivilege	2812	wmic.exe
Token: SeSystemEnvironmentPrivilege	2812	wmic.exe
Token: SeRemoteShutdownPrivilege	2812	wmic.exe
Token: SeUndockPrivilege	2812	wmic.exe
Token: SeManageVolumePrivilege	2812	wmic.exe
Token: 33	2812	wmic.exe
Token: 34	2812	wmic.exe
Token: 35	2812	wmic.exe
Token: SeIncreaseQuotaPrivilege	2812	wmic.exe
Token: SeSecurityPrivilege	2812	wmic.exe
Token: SeTakeOwnershipPrivilege	2812	wmic.exe
Token: SeLoadDriverPrivilege	2812	wmic.exe
Token: SeSystemProfilePrivilege	2812	wmic.exe
Token: SeSystemtimePrivilege	2812	wmic.exe
Token: SeProfSingleProcessPrivilege	2812	wmic.exe
Token: SeIncBasePriorityPrivilege	2812	wmic.exe
Token: SeCreatePagefilePrivilege	2812	wmic.exe
Token: SeBackupPrivilege	2812	wmic.exe
Token: SeRestorePrivilege	2812	wmic.exe
Token: SeShutdownPrivilege	2812	wmic.exe
Token: SeDebugPrivilege	2812	wmic.exe
Token: SeSystemEnvironmentPrivilege	2812	wmic.exe
Token: SeRemoteShutdownPrivilege	2812	wmic.exe
Token: SeUndockPrivilege	2812	wmic.exe
Token: SeManageVolumePrivilege	2812	wmic.exe
Token: 33	2812	wmic.exe
Token: 34	2812	wmic.exe
Token: 35	2812	wmic.exe
Token: SeDebugPrivilege	2192	powershell.exe
Token: SeDebugPrivilege	2596	powershell.exe
Token: SeDebugPrivilege	1732	powershell.exe
Token: SeDebugPrivilege	2660	powershell.exe
Token: SeIncreaseQuotaPrivilege	2024	wmic.exe
Token: SeSecurityPrivilege	2024	wmic.exe
Token: SeTakeOwnershipPrivilege	2024	wmic.exe
Token: SeLoadDriverPrivilege	2024	wmic.exe
Token: SeSystemProfilePrivilege	2024	wmic.exe
Token: SeSystemtimePrivilege	2024	wmic.exe
Token: SeProfSingleProcessPrivilege	2024	wmic.exe
Token: SeIncBasePriorityPrivilege	2024	wmic.exe
Token: SeCreatePagefilePrivilege	2024	wmic.exe
Token: SeBackupPrivilege	2024	wmic.exe
Token: SeRestorePrivilege	2024	wmic.exe
Token: SeShutdownPrivilege	2024	wmic.exe
Token: SeDebugPrivilege	2024	wmic.exe
Token: SeSystemEnvironmentPrivilege	2024	wmic.exe
Token: SeRemoteShutdownPrivilege	2024	wmic.exe
Token: SeUndockPrivilege	2024	wmic.exe
Token: SeManageVolumePrivilege	2024	wmic.exe
Token: 33	2024	wmic.exe
Token: 34	2024	wmic.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
328	triggerbot.exe

Suspicious use of SendNotifyMessage 1 IoCs

pid	Process
328	triggerbot.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
328	triggerbot.exe

Suspicious use of WriteProcessMemory 47 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 328	2100	void.exe	30
PID 2100 wrote to memory of 328	2100	void.exe	30
PID 2100 wrote to memory of 328	2100	void.exe	30
PID 2100 wrote to memory of 328	2100	void.exe	30
PID 2100 wrote to memory of 2384	2100	void.exe	31
PID 2100 wrote to memory of 2384	2100	void.exe	31
PID 2100 wrote to memory of 2384	2100	void.exe	31
PID 2100 wrote to memory of 2384	2100	void.exe	31
PID 2384 wrote to memory of 2812	2384	Source code.exe	32
PID 2384 wrote to memory of 2812	2384	Source code.exe	32
PID 2384 wrote to memory of 2812	2384	Source code.exe	32
PID 2384 wrote to memory of 2760	2384	Source code.exe	35
PID 2384 wrote to memory of 2760	2384	Source code.exe	35
PID 2384 wrote to memory of 2760	2384	Source code.exe	35
PID 2384 wrote to memory of 2192	2384	Source code.exe	37
PID 2384 wrote to memory of 2192	2384	Source code.exe	37
PID 2384 wrote to memory of 2192	2384	Source code.exe	37
PID 2384 wrote to memory of 2596	2384	Source code.exe	39
PID 2384 wrote to memory of 2596	2384	Source code.exe	39
PID 2384 wrote to memory of 2596	2384	Source code.exe	39
PID 2384 wrote to memory of 1732	2384	Source code.exe	41
PID 2384 wrote to memory of 1732	2384	Source code.exe	41
PID 2384 wrote to memory of 1732	2384	Source code.exe	41
PID 2384 wrote to memory of 2660	2384	Source code.exe	43
PID 2384 wrote to memory of 2660	2384	Source code.exe	43
PID 2384 wrote to memory of 2660	2384	Source code.exe	43
PID 2384 wrote to memory of 2024	2384	Source code.exe	46
PID 2384 wrote to memory of 2024	2384	Source code.exe	46
PID 2384 wrote to memory of 2024	2384	Source code.exe	46
PID 2384 wrote to memory of 1648	2384	Source code.exe	48
PID 2384 wrote to memory of 1648	2384	Source code.exe	48
PID 2384 wrote to memory of 1648	2384	Source code.exe	48
PID 2384 wrote to memory of 2988	2384	Source code.exe	50
PID 2384 wrote to memory of 2988	2384	Source code.exe	50
PID 2384 wrote to memory of 2988	2384	Source code.exe	50
PID 2384 wrote to memory of 2476	2384	Source code.exe	52
PID 2384 wrote to memory of 2476	2384	Source code.exe	52
PID 2384 wrote to memory of 2476	2384	Source code.exe	52
PID 2384 wrote to memory of 2528	2384	Source code.exe	54
PID 2384 wrote to memory of 2528	2384	Source code.exe	54
PID 2384 wrote to memory of 2528	2384	Source code.exe	54
PID 2384 wrote to memory of 1704	2384	Source code.exe	56
PID 2384 wrote to memory of 1704	2384	Source code.exe	56
PID 2384 wrote to memory of 1704	2384	Source code.exe	56
PID 1704 wrote to memory of 844	1704	cmd.exe	58
PID 1704 wrote to memory of 844	1704	cmd.exe	58
PID 1704 wrote to memory of 844	1704	cmd.exe	58

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2760	attrib.exe

C:\Users\Admin\AppData\Local\Temp\void.exe
"C:\Users\Admin\AppData\Local\Temp\void.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Users\Admin\AppData\Local\Temp\triggerbot.exe
  "C:\Users\Admin\AppData\Local\Temp\triggerbot.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of SetWindowsHookEx
  PID:328
- C:\Users\Admin\AppData\Local\Temp\Source code.exe
  "C:\Users\Admin\AppData\Local\Temp\Source code.exe"
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2384
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2812
- - C:\Windows\system32\attrib.exe
    "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Source code.exe"
    3⤵
    - Views/modifies file attributes
    PID:2760
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Source code.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2192
- - 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
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2596
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKCU:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1732
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path HKLN:SOFTWARE\Roblox\RobloxStudioBrowser\roblox.com -Name .ROBLOSECURITY
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2660
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" os get Caption
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2024
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" computersystem get totalphysicalmemory
    3⤵
    PID:1648
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic.exe" csproduct get uuid
    3⤵
    PID:2988
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    PID:2476
- - C:\Windows\System32\Wbem\wmic.exe
    "wmic" path win32_VideoController get name
    3⤵
    - Detects videocard installed
    PID:2528
- - C:\Windows\system32\cmd.exe
    "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Source code.exe" && pause
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:1704
  - - C:\Windows\system32\PING.EXE
      ping localhost
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:844

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 Location Discovery

T1614

System Language Discovery

T1614.001

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\Local\Temp\Source code.exe

Filesize
230KB

MD5
1bd8c57a285b16031347d648da8236df

SHA1
22d317dbcba46fe01d194f317e1723f8f56ddf03

SHA256
3fc0488caefd731de70f92c6fb7bc71ddaa9c95304692357a53681d9878e4fe2

SHA512
bcfcc853a09512fc320205e264d365d73313b6269438a278459a65f16ee2bbb27c84f10f1aef42b38211936276a220b29011ef86e8fcccc4d002be55a63382fd

Download Submit
C:\Users\Admin\AppData\Local\Temp\triggerbot.exe

Filesize
969KB

MD5
24f2d1b0276c92bedd06612a34fda910

SHA1
f7c414b64d302f272785df5e62076fabdf7d5719

SHA256
02294d7cc5012fe8c48886c07d774f1be2606890b4f1e08254995cce42cfa95a

SHA512
7789ab39108188ef25ffe12fa76ce5d99cc19353b8e13b05eba5429c84e4a07cd5cd0995f0b08eb485826b665bb17e96320e62ff554469d064428b73f40ef766

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

Filesize
7KB

MD5
6dede0525bf9ef1599324641126e6f23

SHA1
96c2e4956bf319eff5bc19952b0be49f3df09c96

SHA256
6d97d6026a643bddbe3695cdef973877350b56bc34a8cf4423831b191fc6c49d

SHA512
b200d777a6a1e09ccdafc8b11d5d6a125d27f6e82550b1d15a3dd068fb1626270d86ee1f4e2c6f37e26391b3ea74d0f83d5a34ac65b0b09950b7b28548c0e0df

Download Submit
memory/2100-10-0x0000000000400000-0x0000000000536000-memory.dmp

Filesize
1.2MB

Download
memory/2192-18-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/2192-19-0x0000000002970000-0x0000000002978000-memory.dmp

Filesize
32KB

Download
memory/2384-13-0x0000000001330000-0x0000000001370000-memory.dmp

Filesize
256KB

Download
memory/2476-54-0x0000000001D20000-0x0000000001D28000-memory.dmp

Filesize
32KB

Download
memory/2596-25-0x000000001B610000-0x000000001B8F2000-memory.dmp

Filesize
2.9MB

Download
memory/2596-26-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download