umbral | 2ce5ab90e160d795bee80f40ab817b2beb35fb43845e61658942eda4ca0b376c

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-12-2024 15:02

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General

Target

Umbral.exe
Size

229KB
MD5

0cc2a414bb58a3f9e345ea56350ff9a4
SHA1

09ec47af8c94ac3a94ad0e29df8a1405a6bc9e01
SHA256

2ce5ab90e160d795bee80f40ab817b2beb35fb43845e61658942eda4ca0b376c
SHA512

007ea98156043b18be5a612741ca9d2a0494dd5a5f7cea06a27185ac0de3950dd295d7e5066ea4313e3c517159b96450397e9645798fb2a2abd92ab8c21adccb
SSDEEP

6144:tloZM0rIkd8g+EtXHkv/iD4eKbNoOJBiVHaIJtM9Xb8e1mgri:voZDL+EP8eKbNoOJBiVHaIJtMZ3m

Score

10^/10

umbral execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/4224-1-0x00000214EB7F0000-0x00000214EB830000-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
4916	powershell.exe
1876	powershell.exe
1632	powershell.exe
1868	powershell.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
21	discord.com
20	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
8	ip-api.com

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
976	wmic.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
4224	Umbral.exe
4916	powershell.exe
4916	powershell.exe
1876	powershell.exe
1876	powershell.exe
1632	powershell.exe
1632	powershell.exe
1236	powershell.exe
1236	powershell.exe
1868	powershell.exe
1868	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4224	Umbral.exe
Token: SeIncreaseQuotaPrivilege	3760	wmic.exe
Token: SeSecurityPrivilege	3760	wmic.exe
Token: SeTakeOwnershipPrivilege	3760	wmic.exe
Token: SeLoadDriverPrivilege	3760	wmic.exe
Token: SeSystemProfilePrivilege	3760	wmic.exe
Token: SeSystemtimePrivilege	3760	wmic.exe
Token: SeProfSingleProcessPrivilege	3760	wmic.exe
Token: SeIncBasePriorityPrivilege	3760	wmic.exe
Token: SeCreatePagefilePrivilege	3760	wmic.exe
Token: SeBackupPrivilege	3760	wmic.exe
Token: SeRestorePrivilege	3760	wmic.exe
Token: SeShutdownPrivilege	3760	wmic.exe
Token: SeDebugPrivilege	3760	wmic.exe
Token: SeSystemEnvironmentPrivilege	3760	wmic.exe
Token: SeRemoteShutdownPrivilege	3760	wmic.exe
Token: SeUndockPrivilege	3760	wmic.exe
Token: SeManageVolumePrivilege	3760	wmic.exe
Token: 33	3760	wmic.exe
Token: 34	3760	wmic.exe
Token: 35	3760	wmic.exe
Token: 36	3760	wmic.exe
Token: SeIncreaseQuotaPrivilege	3760	wmic.exe
Token: SeSecurityPrivilege	3760	wmic.exe
Token: SeTakeOwnershipPrivilege	3760	wmic.exe
Token: SeLoadDriverPrivilege	3760	wmic.exe
Token: SeSystemProfilePrivilege	3760	wmic.exe
Token: SeSystemtimePrivilege	3760	wmic.exe
Token: SeProfSingleProcessPrivilege	3760	wmic.exe
Token: SeIncBasePriorityPrivilege	3760	wmic.exe
Token: SeCreatePagefilePrivilege	3760	wmic.exe
Token: SeBackupPrivilege	3760	wmic.exe
Token: SeRestorePrivilege	3760	wmic.exe
Token: SeShutdownPrivilege	3760	wmic.exe
Token: SeDebugPrivilege	3760	wmic.exe
Token: SeSystemEnvironmentPrivilege	3760	wmic.exe
Token: SeRemoteShutdownPrivilege	3760	wmic.exe
Token: SeUndockPrivilege	3760	wmic.exe
Token: SeManageVolumePrivilege	3760	wmic.exe
Token: 33	3760	wmic.exe
Token: 34	3760	wmic.exe
Token: 35	3760	wmic.exe
Token: 36	3760	wmic.exe
Token: SeDebugPrivilege	4916	powershell.exe
Token: SeDebugPrivilege	1876	powershell.exe
Token: SeDebugPrivilege	1632	powershell.exe
Token: SeDebugPrivilege	1236	powershell.exe
Token: SeIncreaseQuotaPrivilege	4996	wmic.exe
Token: SeSecurityPrivilege	4996	wmic.exe
Token: SeTakeOwnershipPrivilege	4996	wmic.exe
Token: SeLoadDriverPrivilege	4996	wmic.exe
Token: SeSystemProfilePrivilege	4996	wmic.exe
Token: SeSystemtimePrivilege	4996	wmic.exe
Token: SeProfSingleProcessPrivilege	4996	wmic.exe
Token: SeIncBasePriorityPrivilege	4996	wmic.exe
Token: SeCreatePagefilePrivilege	4996	wmic.exe
Token: SeBackupPrivilege	4996	wmic.exe
Token: SeRestorePrivilege	4996	wmic.exe
Token: SeShutdownPrivilege	4996	wmic.exe
Token: SeDebugPrivilege	4996	wmic.exe
Token: SeSystemEnvironmentPrivilege	4996	wmic.exe
Token: SeRemoteShutdownPrivilege	4996	wmic.exe
Token: SeUndockPrivilege	4996	wmic.exe
Token: SeManageVolumePrivilege	4996	wmic.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4224 wrote to memory of 3760	4224	Umbral.exe	82
PID 4224 wrote to memory of 3760	4224	Umbral.exe	82
PID 4224 wrote to memory of 4916	4224	Umbral.exe	85
PID 4224 wrote to memory of 4916	4224	Umbral.exe	85
PID 4224 wrote to memory of 1876	4224	Umbral.exe	87
PID 4224 wrote to memory of 1876	4224	Umbral.exe	87
PID 4224 wrote to memory of 1632	4224	Umbral.exe	89
PID 4224 wrote to memory of 1632	4224	Umbral.exe	89
PID 4224 wrote to memory of 1236	4224	Umbral.exe	91
PID 4224 wrote to memory of 1236	4224	Umbral.exe	91
PID 4224 wrote to memory of 4996	4224	Umbral.exe	93
PID 4224 wrote to memory of 4996	4224	Umbral.exe	93
PID 4224 wrote to memory of 1680	4224	Umbral.exe	95
PID 4224 wrote to memory of 1680	4224	Umbral.exe	95
PID 4224 wrote to memory of 2200	4224	Umbral.exe	97
PID 4224 wrote to memory of 2200	4224	Umbral.exe	97
PID 4224 wrote to memory of 1868	4224	Umbral.exe	99
PID 4224 wrote to memory of 1868	4224	Umbral.exe	99
PID 4224 wrote to memory of 976	4224	Umbral.exe	101
PID 4224 wrote to memory of 976	4224	Umbral.exe	101

C:\Users\Admin\AppData\Local\Temp\Umbral.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4224
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3760
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Umbral.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4916
- 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:1876
- 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:1632
- 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:1236
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4996
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:1680
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:2200
- 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:1868
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:976

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\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
948B

MD5
6a29e9f9eb72c3bffbb054cd27e3ceea

SHA1
d38f7c2ad68dcf1d24deca9792256ff53d5218b2

SHA256
7a9f831f96b9e4843751dea3ed57ee11d70bb83a5970ddf9d6bd440f4def442c

SHA512
b4826f172c6ac60ad17412a634987c45640b1b8fe03aecba26510ae224685bcd571bc4b131724036e2b502b3a8198fb69414be8c72e46f833f0601a15d313430

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

Filesize
1KB

MD5
276798eeb29a49dc6e199768bc9c2e71

SHA1
5fdc8ccb897ac2df7476fbb07517aca5b7a6205b

SHA256
cd0a1056e8f1b6cb5cb328532239d802f4e2aa8f8fcdc0fcb487684bd68e0dcc

SHA512
0d34fce64bbefc57d64fa6e03ca886952263d5f24df9c1c4cce6a1e8f5a47a9a21e9820f8d38caa7f7b43a52336ce00b738ea18419aaa7c788b72e04ce19e4f2

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

Filesize
1KB

MD5
e731d04342acefb30a7006b3d20d4977

SHA1
a8745005573ac1c2bb2d6318b47b250efdd0d9d8

SHA256
72ca7db8b3ada50034d4b5dcb1be696b8574814fc55f6ea38812046cc3c9f8d7

SHA512
7ea1392cc10a5aa176d013265a0fcd5dfac7b2606980ff29d8656c88069b1586f9a34e430695917631da443cf124afcd569421cf1e1bb1996c9c23063b9bccb9

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zhe5hida.fvh.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4224-71-0x00000214EDEE0000-0x00000214EDEEA000-memory.dmp

Filesize
40KB

Download
memory/4224-34-0x00000214ED590000-0x00000214ED5AE000-memory.dmp

Filesize
120KB

Download
memory/4224-92-0x00007FF9024F0000-0x00007FF902FB1000-memory.dmp

Filesize
10.8MB

Download
memory/4224-72-0x00000214EDF10000-0x00000214EDF22000-memory.dmp

Filesize
72KB

Download
memory/4224-2-0x00007FF9024F0000-0x00007FF902FB1000-memory.dmp

Filesize
10.8MB

Download
memory/4224-32-0x00000214EDF40000-0x00000214EDFB6000-memory.dmp

Filesize
472KB

Download
memory/4224-33-0x00000214EDFC0000-0x00000214EE010000-memory.dmp

Filesize
320KB

Download
memory/4224-0-0x00007FF9024F3000-0x00007FF9024F5000-memory.dmp

Filesize
8KB

Download
memory/4224-1-0x00000214EB7F0000-0x00000214EB830000-memory.dmp

Filesize
256KB

Download
memory/4916-6-0x00007FF9024F0000-0x00007FF902FB1000-memory.dmp

Filesize
10.8MB

Download
memory/4916-4-0x000001EED6610000-0x000001EED6632000-memory.dmp

Filesize
136KB

Download
memory/4916-3-0x00007FF9024F0000-0x00007FF902FB1000-memory.dmp

Filesize
10.8MB

Download
memory/4916-5-0x00007FF9024F0000-0x00007FF902FB1000-memory.dmp

Filesize
10.8MB

Download
memory/4916-18-0x00007FF9024F0000-0x00007FF902FB1000-memory.dmp

Filesize
10.8MB

Download