umbral | 03b53c8510e8b55a7b678839a8a49afc8951558e965fa6694357601ddb41b4e9

Analysis

max time kernel
120s
max time network
134s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
22-02-2025 01:33

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General

Target

zzz.exe
Size

227KB
MD5

45edc39982861c2c66ca275475a2b1b7
SHA1

7cc1e53f8065fc7344351c33477a64e75283fbf9
SHA256

03b53c8510e8b55a7b678839a8a49afc8951558e965fa6694357601ddb41b4e9
SHA512

3f91eec3726d384570ff43dbc0dea43938f48e44eea8cf2f0aa04799bbf69f63eeb4c4d6e151dfbec733833526920b36e8a5bd8807395711cfbec3dfe92a0288
SSDEEP

6144:+loZM9rIkd8g+EtXHkv/iD4751srRiK1qwBzOurl4b8e1mZi:ooZOL+EP8751srRiK1qwBzOur2b

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/820-1-0x000001AE68690000-0x000001AE686D0000-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
2488	powershell.exe
3892	powershell.exe
4552	powershell.exe
816	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	zzz.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
27	discord.com
28	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
18	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
3352	cmd.exe
4268	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
4376	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4268	PING.EXE

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2488	powershell.exe
2488	powershell.exe
3892	powershell.exe
3892	powershell.exe
4552	powershell.exe
4552	powershell.exe
3364	powershell.exe
3364	powershell.exe
816	powershell.exe
816	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	820	zzz.exe
Token: SeDebugPrivilege	2488	powershell.exe
Token: SeDebugPrivilege	3892	powershell.exe
Token: SeDebugPrivilege	4552	powershell.exe
Token: SeDebugPrivilege	3364	powershell.exe
Token: SeIncreaseQuotaPrivilege	1012	wmic.exe
Token: SeSecurityPrivilege	1012	wmic.exe
Token: SeTakeOwnershipPrivilege	1012	wmic.exe
Token: SeLoadDriverPrivilege	1012	wmic.exe
Token: SeSystemProfilePrivilege	1012	wmic.exe
Token: SeSystemtimePrivilege	1012	wmic.exe
Token: SeProfSingleProcessPrivilege	1012	wmic.exe
Token: SeIncBasePriorityPrivilege	1012	wmic.exe
Token: SeCreatePagefilePrivilege	1012	wmic.exe
Token: SeBackupPrivilege	1012	wmic.exe
Token: SeRestorePrivilege	1012	wmic.exe
Token: SeShutdownPrivilege	1012	wmic.exe
Token: SeDebugPrivilege	1012	wmic.exe
Token: SeSystemEnvironmentPrivilege	1012	wmic.exe
Token: SeRemoteShutdownPrivilege	1012	wmic.exe
Token: SeUndockPrivilege	1012	wmic.exe
Token: SeManageVolumePrivilege	1012	wmic.exe
Token: 33	1012	wmic.exe
Token: 34	1012	wmic.exe
Token: 35	1012	wmic.exe
Token: 36	1012	wmic.exe
Token: SeIncreaseQuotaPrivilege	1012	wmic.exe
Token: SeSecurityPrivilege	1012	wmic.exe
Token: SeTakeOwnershipPrivilege	1012	wmic.exe
Token: SeLoadDriverPrivilege	1012	wmic.exe
Token: SeSystemProfilePrivilege	1012	wmic.exe
Token: SeSystemtimePrivilege	1012	wmic.exe
Token: SeProfSingleProcessPrivilege	1012	wmic.exe
Token: SeIncBasePriorityPrivilege	1012	wmic.exe
Token: SeCreatePagefilePrivilege	1012	wmic.exe
Token: SeBackupPrivilege	1012	wmic.exe
Token: SeRestorePrivilege	1012	wmic.exe
Token: SeShutdownPrivilege	1012	wmic.exe
Token: SeDebugPrivilege	1012	wmic.exe
Token: SeSystemEnvironmentPrivilege	1012	wmic.exe
Token: SeRemoteShutdownPrivilege	1012	wmic.exe
Token: SeUndockPrivilege	1012	wmic.exe
Token: SeManageVolumePrivilege	1012	wmic.exe
Token: 33	1012	wmic.exe
Token: 34	1012	wmic.exe
Token: 35	1012	wmic.exe
Token: 36	1012	wmic.exe
Token: SeIncreaseQuotaPrivilege	4284	wmic.exe
Token: SeSecurityPrivilege	4284	wmic.exe
Token: SeTakeOwnershipPrivilege	4284	wmic.exe
Token: SeLoadDriverPrivilege	4284	wmic.exe
Token: SeSystemProfilePrivilege	4284	wmic.exe
Token: SeSystemtimePrivilege	4284	wmic.exe
Token: SeProfSingleProcessPrivilege	4284	wmic.exe
Token: SeIncBasePriorityPrivilege	4284	wmic.exe
Token: SeCreatePagefilePrivilege	4284	wmic.exe
Token: SeBackupPrivilege	4284	wmic.exe
Token: SeRestorePrivilege	4284	wmic.exe
Token: SeShutdownPrivilege	4284	wmic.exe
Token: SeDebugPrivilege	4284	wmic.exe
Token: SeSystemEnvironmentPrivilege	4284	wmic.exe
Token: SeRemoteShutdownPrivilege	4284	wmic.exe
Token: SeUndockPrivilege	4284	wmic.exe
Token: SeManageVolumePrivilege	4284	wmic.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 820 wrote to memory of 2584	820	zzz.exe	84
PID 820 wrote to memory of 2584	820	zzz.exe	84
PID 820 wrote to memory of 2488	820	zzz.exe	87
PID 820 wrote to memory of 2488	820	zzz.exe	87
PID 820 wrote to memory of 3892	820	zzz.exe	91
PID 820 wrote to memory of 3892	820	zzz.exe	91
PID 820 wrote to memory of 4552	820	zzz.exe	93
PID 820 wrote to memory of 4552	820	zzz.exe	93
PID 820 wrote to memory of 3364	820	zzz.exe	95
PID 820 wrote to memory of 3364	820	zzz.exe	95
PID 820 wrote to memory of 1012	820	zzz.exe	97
PID 820 wrote to memory of 1012	820	zzz.exe	97
PID 820 wrote to memory of 4284	820	zzz.exe	100
PID 820 wrote to memory of 4284	820	zzz.exe	100
PID 820 wrote to memory of 5076	820	zzz.exe	102
PID 820 wrote to memory of 5076	820	zzz.exe	102
PID 820 wrote to memory of 816	820	zzz.exe	104
PID 820 wrote to memory of 816	820	zzz.exe	104
PID 820 wrote to memory of 4376	820	zzz.exe	106
PID 820 wrote to memory of 4376	820	zzz.exe	106
PID 820 wrote to memory of 3352	820	zzz.exe	109
PID 820 wrote to memory of 3352	820	zzz.exe	109
PID 3352 wrote to memory of 4268	3352	cmd.exe	111
PID 3352 wrote to memory of 4268	3352	cmd.exe	111

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
2584	attrib.exe

C:\Users\Admin\AppData\Local\Temp\zzz.exe
"C:\Users\Admin\AppData\Local\Temp\zzz.exe"
1⤵
- Drops file in Drivers directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:820
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\zzz.exe"
  2⤵
  - Views/modifies file attributes
  PID:2584
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\zzz.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2488
- 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:3892
- 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:4552
- 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:3364
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1012
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4284
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:5076
- 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:816
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:4376
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\zzz.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:3352
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4268

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\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
8c83aaf9a98d5a32d6213bc6b552925e

SHA1
6c36e784738f6ee769f055e7237d087af9db5341

SHA256
9b0a00e9f86bd22cfc30ddfe399d7284f0895bb8b5e8faf4207caf63459a3a17

SHA512
413a58e6a510199500458fe9abce3366401b9b83ed1f5190a8823de30c258a786add624fcfca9181570dc2ef8d6d95c7d87061221d014a7fa997917c22dd2421

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

Filesize
948B

MD5
c65738617888921a153bd9b1ef516ee7

SHA1
5245e71ea3c181d76320c857b639272ac9e079b1

SHA256
4640ba4001fd16a593315299cbdd4988dc2c7075820687f1018aac40aca95c26

SHA512
2e2a0ebd93f9d8dd07a7599054bce232683e9add9a35e77b584618040bcfd84a42545352519ec4736cc379002210b6f3ed2d905591c6925c0981b0392b495bfa

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

Filesize
1KB

MD5
548dd08570d121a65e82abb7171cae1c

SHA1
1a1b5084b3a78f3acd0d811cc79dbcac121217ab

SHA256
cdf17b8532ebcebac3cfe23954a30aa32edd268d040da79c82687e4ccb044adc

SHA512
37b98b09178b51eec9599af90d027d2f1028202efc1633047e16e41f1a95610984af5620baac07db085ccfcb96942aafffad17aa1f44f63233e83869dc9f697b

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

Filesize
1KB

MD5
7511c81925750deb7ad1b9b80eea8a8d

SHA1
6ea759b3cbd243ae11435c6d6c5ced185eb01f49

SHA256
5b49723a7773f2fe1f6093236e7b9b2c546f0873635d02346cb39535811234fa

SHA512
5f7e69316d39525d137a7a833f8c746ceef8f1b2295348393fb3244cca8b962fbaad0f7da49da453fe97e2c49b1f41f06138111ac5ff97fdc33c300350ec3a1b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_q5zwvmbk.2iq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/820-73-0x000001AE6A4F0000-0x000001AE6A502000-memory.dmp

Filesize
72KB

Download
memory/820-35-0x000001AE68B60000-0x000001AE68B7E000-memory.dmp

Filesize
120KB

Download
memory/820-93-0x00007FF8BEDA0000-0x00007FF8BF861000-memory.dmp

Filesize
10.8MB

Download
memory/820-72-0x000001AE68BA0000-0x000001AE68BAA000-memory.dmp

Filesize
40KB

Download
memory/820-2-0x00007FF8BEDA0000-0x00007FF8BF861000-memory.dmp

Filesize
10.8MB

Download
memory/820-33-0x000001AE6AE20000-0x000001AE6AE96000-memory.dmp

Filesize
472KB

Download
memory/820-34-0x000001AE6A480000-0x000001AE6A4D0000-memory.dmp

Filesize
320KB

Download
memory/820-0-0x00007FF8BEDA3000-0x00007FF8BEDA5000-memory.dmp

Filesize
8KB

Download
memory/820-1-0x000001AE68690000-0x000001AE686D0000-memory.dmp

Filesize
256KB

Download
memory/2488-15-0x00007FF8BEDA0000-0x00007FF8BF861000-memory.dmp

Filesize
10.8MB

Download
memory/2488-4-0x00007FF8BEDA0000-0x00007FF8BF861000-memory.dmp

Filesize
10.8MB

Download
memory/2488-3-0x00007FF8BEDA0000-0x00007FF8BF861000-memory.dmp

Filesize
10.8MB

Download
memory/2488-10-0x0000018FFD740000-0x0000018FFD762000-memory.dmp

Filesize
136KB

Download
memory/2488-18-0x00007FF8BEDA0000-0x00007FF8BF861000-memory.dmp

Filesize
10.8MB

Download