umbral | e14be40bad2e07456140fee37d8ca380811886c1c89b0b6e21e8b0f2a33ed663

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
22-12-2024 12:57

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General

Target

Umbral.exe
Size

229KB
MD5

6f99ad653049306925da44b34fd12011
SHA1

df5d265397a6895efa77bed1478e79784cba7954
SHA256

e14be40bad2e07456140fee37d8ca380811886c1c89b0b6e21e8b0f2a33ed663
SHA512

89c9c171f1684cab8bd55b971cd69b9370f49d7da743f848b99d68523b89e2810ab033c4f26d539240d185186f72549bfb422b9c65cd7cf5c00f781693b569b8
SSDEEP

6144:FloZM+rIkd8g+EtXHkv/iD4YD5JR/k4XRG/BcoN2Nb8e1mFi:HoZtL+EP8YD5JR/k4XRG/BcoNW/

Score

10^/10

umbral discovery execution spyware stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral2/memory/3348-1-0x000001D900BA0000-0x000001D900BE0000-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
1624	powershell.exe
2736	powershell.exe
5044	powershell.exe
3548	powershell.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	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 2 IoCs

Web Service

T1102

flow	ioc
20	discord.com
21	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
7	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
2916	cmd.exe
5084	PING.EXE

Detects videocard installed 1 TTPs 1 IoCs

Uses WMIC.exe to determine videocard installed.

System Information Discovery

T1082

pid	Process
1580	wmic.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
5084	PING.EXE

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
3348	Umbral.exe
1624	powershell.exe
1624	powershell.exe
2736	powershell.exe
2736	powershell.exe
5044	powershell.exe
5044	powershell.exe
3540	powershell.exe
3540	powershell.exe
3548	powershell.exe
3548	powershell.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3348	Umbral.exe
Token: SeIncreaseQuotaPrivilege	1392	wmic.exe
Token: SeSecurityPrivilege	1392	wmic.exe
Token: SeTakeOwnershipPrivilege	1392	wmic.exe
Token: SeLoadDriverPrivilege	1392	wmic.exe
Token: SeSystemProfilePrivilege	1392	wmic.exe
Token: SeSystemtimePrivilege	1392	wmic.exe
Token: SeProfSingleProcessPrivilege	1392	wmic.exe
Token: SeIncBasePriorityPrivilege	1392	wmic.exe
Token: SeCreatePagefilePrivilege	1392	wmic.exe
Token: SeBackupPrivilege	1392	wmic.exe
Token: SeRestorePrivilege	1392	wmic.exe
Token: SeShutdownPrivilege	1392	wmic.exe
Token: SeDebugPrivilege	1392	wmic.exe
Token: SeSystemEnvironmentPrivilege	1392	wmic.exe
Token: SeRemoteShutdownPrivilege	1392	wmic.exe
Token: SeUndockPrivilege	1392	wmic.exe
Token: SeManageVolumePrivilege	1392	wmic.exe
Token: 33	1392	wmic.exe
Token: 34	1392	wmic.exe
Token: 35	1392	wmic.exe
Token: 36	1392	wmic.exe
Token: SeIncreaseQuotaPrivilege	1392	wmic.exe
Token: SeSecurityPrivilege	1392	wmic.exe
Token: SeTakeOwnershipPrivilege	1392	wmic.exe
Token: SeLoadDriverPrivilege	1392	wmic.exe
Token: SeSystemProfilePrivilege	1392	wmic.exe
Token: SeSystemtimePrivilege	1392	wmic.exe
Token: SeProfSingleProcessPrivilege	1392	wmic.exe
Token: SeIncBasePriorityPrivilege	1392	wmic.exe
Token: SeCreatePagefilePrivilege	1392	wmic.exe
Token: SeBackupPrivilege	1392	wmic.exe
Token: SeRestorePrivilege	1392	wmic.exe
Token: SeShutdownPrivilege	1392	wmic.exe
Token: SeDebugPrivilege	1392	wmic.exe
Token: SeSystemEnvironmentPrivilege	1392	wmic.exe
Token: SeRemoteShutdownPrivilege	1392	wmic.exe
Token: SeUndockPrivilege	1392	wmic.exe
Token: SeManageVolumePrivilege	1392	wmic.exe
Token: 33	1392	wmic.exe
Token: 34	1392	wmic.exe
Token: 35	1392	wmic.exe
Token: 36	1392	wmic.exe
Token: SeDebugPrivilege	1624	powershell.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeDebugPrivilege	5044	powershell.exe
Token: SeDebugPrivilege	3540	powershell.exe
Token: SeIncreaseQuotaPrivilege	1184	wmic.exe
Token: SeSecurityPrivilege	1184	wmic.exe
Token: SeTakeOwnershipPrivilege	1184	wmic.exe
Token: SeLoadDriverPrivilege	1184	wmic.exe
Token: SeSystemProfilePrivilege	1184	wmic.exe
Token: SeSystemtimePrivilege	1184	wmic.exe
Token: SeProfSingleProcessPrivilege	1184	wmic.exe
Token: SeIncBasePriorityPrivilege	1184	wmic.exe
Token: SeCreatePagefilePrivilege	1184	wmic.exe
Token: SeBackupPrivilege	1184	wmic.exe
Token: SeRestorePrivilege	1184	wmic.exe
Token: SeShutdownPrivilege	1184	wmic.exe
Token: SeDebugPrivilege	1184	wmic.exe
Token: SeSystemEnvironmentPrivilege	1184	wmic.exe
Token: SeRemoteShutdownPrivilege	1184	wmic.exe
Token: SeUndockPrivilege	1184	wmic.exe
Token: SeManageVolumePrivilege	1184	wmic.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3348 wrote to memory of 1392	3348	Umbral.exe	86
PID 3348 wrote to memory of 1392	3348	Umbral.exe	86
PID 3348 wrote to memory of 2180	3348	Umbral.exe	89
PID 3348 wrote to memory of 2180	3348	Umbral.exe	89
PID 3348 wrote to memory of 1624	3348	Umbral.exe	91
PID 3348 wrote to memory of 1624	3348	Umbral.exe	91
PID 3348 wrote to memory of 2736	3348	Umbral.exe	93
PID 3348 wrote to memory of 2736	3348	Umbral.exe	93
PID 3348 wrote to memory of 5044	3348	Umbral.exe	95
PID 3348 wrote to memory of 5044	3348	Umbral.exe	95
PID 3348 wrote to memory of 3540	3348	Umbral.exe	97
PID 3348 wrote to memory of 3540	3348	Umbral.exe	97
PID 3348 wrote to memory of 1184	3348	Umbral.exe	100
PID 3348 wrote to memory of 1184	3348	Umbral.exe	100
PID 3348 wrote to memory of 3408	3348	Umbral.exe	102
PID 3348 wrote to memory of 3408	3348	Umbral.exe	102
PID 3348 wrote to memory of 748	3348	Umbral.exe	104
PID 3348 wrote to memory of 748	3348	Umbral.exe	104
PID 3348 wrote to memory of 3548	3348	Umbral.exe	106
PID 3348 wrote to memory of 3548	3348	Umbral.exe	106
PID 3348 wrote to memory of 1580	3348	Umbral.exe	108
PID 3348 wrote to memory of 1580	3348	Umbral.exe	108
PID 3348 wrote to memory of 2916	3348	Umbral.exe	110
PID 3348 wrote to memory of 2916	3348	Umbral.exe	110
PID 2916 wrote to memory of 5084	2916	cmd.exe	112
PID 2916 wrote to memory of 5084	2916	cmd.exe	112

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2180	attrib.exe

C:\Users\Admin\AppData\Local\Temp\Umbral.exe
"C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
1⤵
- Drops file in Drivers directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3348
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1392
- C:\Windows\SYSTEM32\attrib.exe
  "attrib.exe" +h +s "C:\Users\Admin\AppData\Local\Temp\Umbral.exe"
  2⤵
  - Views/modifies file attributes
  PID:2180
- 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:1624
- 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:2736
- 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:5044
- 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:3540
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" os get Caption
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:1184
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" computersystem get totalphysicalmemory
  2⤵
  PID:3408
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  PID:748
- 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:3548
- C:\Windows\System32\Wbem\wmic.exe
  "wmic" path win32_VideoController get name
  2⤵
  - Detects videocard installed
  PID:1580
- C:\Windows\SYSTEM32\cmd.exe
  "cmd.exe" /c ping localhost && del /F /A h "C:\Users\Admin\AppData\Local\Temp\Umbral.exe" && pause
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2916
- - C:\Windows\system32\PING.EXE
    ping localhost
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:5084

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
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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

Filesize
948B

MD5
627deabb4703797ece516ffff56dff63

SHA1
a73aad49150b7daf33c81fdb3d03104dcf98e10e

SHA256
fa203b9c836b5783d582900b5a1e65dc21fbf2ff25af63c41f9272ea930d8473

SHA512
0b44ed0301024c9b19fc0b5c73048b37142121628be818888970c9c3f3a71a75731e27791302e42347d9630c4ba446d02b07af723570f9813f86736b3c2582c3

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
107102102e02e48f37f5318c7e113c43

SHA1
7fb10fc65c85fb4c050309f0872bc9389dcccc0d

SHA256
3c3f49948c1e832c86b959c32bc288ddedb500534b74df082f8967fc7f9976f7

SHA512
b108a47d7c3dd154cad44362b6cd557b7064096383d100e6cd64bfb19c4e2ad878ed4ee800776322ad3cc4bb721fb675b0ecab8f5661024188fa3aa19561841b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bezujzty.sau.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1624-9-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/1624-11-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/1624-12-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/1624-18-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/1624-8-0x00000182FA540000-0x00000182FA562000-memory.dmp

Filesize
136KB

Download
memory/3348-34-0x000001D91B360000-0x000001D91B3B0000-memory.dmp

Filesize
320KB

Download
memory/3348-33-0x000001D91B3E0000-0x000001D91B456000-memory.dmp

Filesize
472KB

Download
memory/3348-35-0x000001D901060000-0x000001D90107E000-memory.dmp

Filesize
120KB

Download
memory/3348-1-0x000001D900BA0000-0x000001D900BE0000-memory.dmp

Filesize
256KB

Download
memory/3348-0-0x00007FFEEB9B3000-0x00007FFEEB9B5000-memory.dmp

Filesize
8KB

Download
memory/3348-72-0x000001D9010B0000-0x000001D9010BA000-memory.dmp

Filesize
40KB

Download
memory/3348-73-0x000001D9010E0000-0x000001D9010F2000-memory.dmp

Filesize
72KB

Download
memory/3348-2-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/3348-93-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download